docs: concepts and building_applications migration (#3534)

# What does this PR do?

- Migrates the remaining documentation sections to the new documentation format

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<!-- Closes #[issue-number] -->

## Test Plan

- Partial migration

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---
title: Agents
description: Build powerful AI applications with the Llama Stack agent framework
sidebar_label: Agents
sidebar_position: 3
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Agents
An Agent in Llama Stack is a powerful abstraction that allows you to build complex AI applications.
The Llama Stack agent framework is built on a modular architecture that allows for flexible and powerful AI applications. This document explains the key components and how they work together.
## Core Concepts
### 1. Agent Configuration
Agents are configured using the `AgentConfig` class, which includes:
- **Model**: The underlying LLM to power the agent
- **Instructions**: System prompt that defines the agent's behavior
- **Tools**: Capabilities the agent can use to interact with external systems
- **Safety Shields**: Guardrails to ensure responsible AI behavior
```python
from llama_stack_client import Agent
# Create the agent
agent = Agent(
llama_stack_client,
model="meta-llama/Llama-3-70b-chat",
instructions="You are a helpful assistant that can use tools to answer questions.",
tools=["builtin::code_interpreter", "builtin::rag/knowledge_search"],
)
```
### 2. Sessions
Agents maintain state through sessions, which represent a conversation thread:
```python
# Create a session
session_id = agent.create_session(session_name="My conversation")
```
### 3. Turns
Each interaction with an agent is called a "turn" and consists of:
- **Input Messages**: What the user sends to the agent
- **Steps**: The agent's internal processing (inference, tool execution, etc.)
- **Output Message**: The agent's response
<Tabs>
<TabItem value="streaming" label="Streaming Response">
```python
from llama_stack_client import AgentEventLogger
# Create a turn with streaming response
turn_response = agent.create_turn(
session_id=session_id,
messages=[{"role": "user", "content": "Tell me about Llama models"}],
)
for log in AgentEventLogger().log(turn_response):
log.print()
```
</TabItem>
<TabItem value="non-streaming" label="Non-Streaming Response">
```python
from rich.pretty import pprint
# Non-streaming API
response = agent.create_turn(
session_id=session_id,
messages=[{"role": "user", "content": "Tell me about Llama models"}],
stream=False,
)
print("Inputs:")
pprint(response.input_messages)
print("Output:")
pprint(response.output_message.content)
print("Steps:")
pprint(response.steps)
```
</TabItem>
</Tabs>
### 4. Steps
Each turn consists of multiple steps that represent the agent's thought process:
- **Inference Steps**: The agent generating text responses
- **Tool Execution Steps**: The agent using tools to gather information
- **Shield Call Steps**: Safety checks being performed
## Agent Execution Loop
Refer to the [Agent Execution Loop](./agent_execution_loop) for more details on what happens within an agent turn.
## Related Resources
- **[Agent Execution Loop](./agent_execution_loop)** - Understanding the internal processing flow
- **[RAG (Retrieval Augmented Generation)](./rag)** - Building knowledge-enhanced agents
- **[Tools Integration](./tools)** - Extending agent capabilities with external tools
- **[Safety Guardrails](./safety)** - Implementing responsible AI practices

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---
title: Agent Execution Loop
description: Understanding the internal processing flow of Llama Stack agents
sidebar_label: Agent Execution Loop
sidebar_position: 4
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Agent Execution Loop
Agents are the heart of Llama Stack applications. They combine inference, memory, safety, and tool usage into coherent workflows. At its core, an agent follows a sophisticated execution loop that enables multi-step reasoning, tool usage, and safety checks.
## Steps in the Agent Workflow
Each agent turn follows these key steps:
1. **Initial Safety Check**: The user's input is first screened through configured safety shields
2. **Context Retrieval**:
- If RAG is enabled, the agent can choose to query relevant documents from memory banks. You can use the `instructions` field to steer the agent.
- For new documents, they are first inserted into the memory bank.
- Retrieved context is provided to the LLM as a tool response in the message history.
3. **Inference Loop**: The agent enters its main execution loop:
- The LLM receives a user prompt (with previous tool outputs)
- The LLM generates a response, potentially with [tool calls](./tools)
- If tool calls are present:
- Tool inputs are safety-checked
- Tools are executed (e.g., web search, code execution)
- Tool responses are fed back to the LLM for synthesis
- The loop continues until:
- The LLM provides a final response without tool calls
- Maximum iterations are reached
- Token limit is exceeded
4. **Final Safety Check**: The agent's final response is screened through safety shields
## Execution Flow Diagram
```mermaid
sequenceDiagram
participant U as User
participant E as Executor
participant M as Memory Bank
participant L as LLM
participant T as Tools
participant S as Safety Shield
Note over U,S: Agent Turn Start
U->>S: 1. Submit Prompt
activate S
S->>E: Input Safety Check
deactivate S
loop Inference Loop
E->>L: 2.1 Augment with Context
L-->>E: 2.2 Response (with/without tool calls)
alt Has Tool Calls
E->>S: Check Tool Input
S->>T: 3.1 Execute Tool
T-->>E: 3.2 Tool Response
E->>L: 4.1 Tool Response
L-->>E: 4.2 Synthesized Response
end
opt Stop Conditions
Note over E: Break if:
Note over E: - No tool calls
Note over E: - Max iterations reached
Note over E: - Token limit exceeded
end
end
E->>S: Output Safety Check
S->>U: 5. Final Response
```
Each step in this process can be monitored and controlled through configurations.
## Agent Execution Example
Here's an example that demonstrates monitoring the agent's execution:
<Tabs>
<TabItem value="streaming" label="Streaming Execution">
```python
from llama_stack_client import LlamaStackClient, Agent, AgentEventLogger
# Replace host and port
client = LlamaStackClient(base_url=f"http://{HOST}:{PORT}")
agent = Agent(
client,
# Check with `llama-stack-client models list`
model="Llama3.2-3B-Instruct",
instructions="You are a helpful assistant",
# Enable both RAG and tool usage
tools=[
{
"name": "builtin::rag/knowledge_search",
"args": {"vector_db_ids": ["my_docs"]},
},
"builtin::code_interpreter",
],
# Configure safety (optional)
input_shields=["llama_guard"],
output_shields=["llama_guard"],
# Control the inference loop
max_infer_iters=5,
sampling_params={
"strategy": {"type": "top_p", "temperature": 0.7, "top_p": 0.95},
"max_tokens": 2048,
},
)
session_id = agent.create_session("monitored_session")
# Stream the agent's execution steps
response = agent.create_turn(
messages=[{"role": "user", "content": "Analyze this code and run it"}],
documents=[
{
"content": "https://raw.githubusercontent.com/example/code.py",
"mime_type": "text/plain",
}
],
session_id=session_id,
)
# Monitor each step of execution
for log in AgentEventLogger().log(response):
log.print()
```
</TabItem>
<TabItem value="non-streaming" label="Non-Streaming Execution">
```python
from rich.pretty import pprint
# Using non-streaming API, the response contains input, steps, and output.
response = agent.create_turn(
messages=[{"role": "user", "content": "Analyze this code and run it"}],
documents=[
{
"content": "https://raw.githubusercontent.com/example/code.py",
"mime_type": "text/plain",
}
],
session_id=session_id,
stream=False,
)
pprint(f"Input: {response.input_messages}")
pprint(f"Output: {response.output_message.content}")
pprint(f"Steps: {response.steps}")
```
</TabItem>
</Tabs>
## Key Configuration Options
### Loop Control
- **max_infer_iters**: Maximum number of inference iterations (default: 5)
- **max_tokens**: Token limit for responses
- **temperature**: Controls response randomness
### Safety Configuration
- **input_shields**: Safety checks for user input
- **output_shields**: Safety checks for agent responses
### Tool Integration
- **tools**: List of available tools for the agent
- **tool_choice**: Control over when tools are used
## Related Resources
- **[Agents](./agent)** - Understanding agent fundamentals
- **[Tools Integration](./tools)** - Adding capabilities to agents
- **[Safety Guardrails](./safety)** - Implementing safety measures
- **[RAG (Retrieval Augmented Generation)](./rag)** - Building knowledge-enhanced workflows

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---
title: Evaluations
description: Evaluate LLM applications with Llama Stack's comprehensive evaluation framework
sidebar_label: Evaluations
sidebar_position: 7
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
This guide walks you through the process of evaluating an LLM application built using Llama Stack. For detailed API reference, check out the [Evaluation Reference](/docs/references/evals-reference) guide that covers the complete set of APIs and developer experience flow.
:::tip[Interactive Examples]
Check out our [Colab notebook](https://colab.research.google.com/drive/10CHyykee9j2OigaIcRv47BKG9mrNm0tJ?usp=sharing) for working examples with evaluations, or try the [Getting Started notebook](https://colab.research.google.com/github/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb).
:::
## Application Evaluation Example
[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb)
Llama Stack offers a library of scoring functions and the `/scoring` API, allowing you to run evaluations on your pre-annotated AI application datasets.
In this example, we will show you how to:
1. **Build an Agent** with Llama Stack
2. **Query the agent's sessions, turns, and steps** to analyze execution
3. **Evaluate the results** using scoring functions
## Step-by-Step Evaluation Process
### 1. Building a Search Agent
First, let's create an agent that can search the web to answer questions:
```python
from llama_stack_client import LlamaStackClient, Agent, AgentEventLogger
client = LlamaStackClient(base_url=f"http://{HOST}:{PORT}")
agent = Agent(
client,
model="meta-llama/Llama-3.3-70B-Instruct",
instructions="You are a helpful assistant. Use search tool to answer the questions.",
tools=["builtin::websearch"],
)
# Test prompts for evaluation
user_prompts = [
"Which teams played in the NBA Western Conference Finals of 2024. Search the web for the answer.",
"In which episode and season of South Park does Bill Cosby (BSM-471) first appear? Give me the number and title. Search the web for the answer.",
"What is the British-American kickboxer Andrew Tate's kickboxing name? Search the web for the answer.",
]
session_id = agent.create_session("test-session")
# Execute all prompts in the session
for prompt in user_prompts:
response = agent.create_turn(
messages=[
{
"role": "user",
"content": prompt,
}
],
session_id=session_id,
)
for log in AgentEventLogger().log(response):
log.print()
```
### 2. Query Agent Execution Steps
Now, let's analyze the agent's execution steps to understand its performance:
<Tabs>
<TabItem value="session-analysis" label="Session Analysis">
```python
from rich.pretty import pprint
# Query the agent's session to get detailed execution data
session_response = client.agents.session.retrieve(
session_id=session_id,
agent_id=agent.agent_id,
)
pprint(session_response)
```
</TabItem>
<TabItem value="tool-validation" label="Tool Usage Validation">
```python
# Sanity check: Verify that all user prompts are followed by tool calls
num_tool_call = 0
for turn in session_response.turns:
for step in turn.steps:
if (
step.step_type == "tool_execution"
and step.tool_calls[0].tool_name == "brave_search"
):
num_tool_call += 1
print(
f"{num_tool_call}/{len(session_response.turns)} user prompts are followed by a tool call to `brave_search`"
)
```
</TabItem>
</Tabs>
### 3. Evaluate Agent Responses
Now we'll evaluate the agent's responses using Llama Stack's scoring API:
<Tabs>
<TabItem value="data-preparation" label="Data Preparation">
```python
# Process agent execution history into evaluation rows
eval_rows = []
# Define expected answers for our test prompts
expected_answers = [
"Dallas Mavericks and the Minnesota Timberwolves",
"Season 4, Episode 12",
"King Cobra",
]
# Create evaluation dataset from agent responses
for i, turn in enumerate(session_response.turns):
eval_rows.append(
{
"input_query": turn.input_messages[0].content,
"generated_answer": turn.output_message.content,
"expected_answer": expected_answers[i],
}
)
pprint(eval_rows)
```
</TabItem>
<TabItem value="scoring" label="Scoring & Evaluation">
```python
# Configure scoring parameters
scoring_params = {
"basic::subset_of": None, # Check if generated answer contains expected answer
}
# Run evaluation using Llama Stack's scoring API
scoring_response = client.scoring.score(
input_rows=eval_rows,
scoring_functions=scoring_params
)
pprint(scoring_response)
# Analyze results
for i, result in enumerate(scoring_response.results):
print(f"Query {i+1}: {result.score}")
print(f" Generated: {eval_rows[i]['generated_answer'][:100]}...")
print(f" Expected: {expected_answers[i]}")
print(f" Score: {result.score}")
print()
```
</TabItem>
</Tabs>
## Available Scoring Functions
Llama Stack provides several built-in scoring functions:
### Basic Scoring Functions
- **`basic::subset_of`**: Checks if the expected answer is contained in the generated response
- **`basic::exact_match`**: Performs exact string matching between expected and generated answers
- **`basic::regex_match`**: Uses regular expressions to match patterns in responses
### Advanced Scoring Functions
- **`llm_as_judge::accuracy`**: Uses an LLM to judge response accuracy
- **`llm_as_judge::helpfulness`**: Evaluates how helpful the response is
- **`llm_as_judge::safety`**: Assesses response safety and appropriateness
### Custom Scoring Functions
You can also create custom scoring functions for domain-specific evaluation needs.
## Evaluation Workflow Best Practices
### 🎯 **Dataset Preparation**
- Use diverse test cases that cover edge cases and common scenarios
- Include clear expected answers or success criteria
- Balance your dataset across different difficulty levels
### 📊 **Metrics Selection**
- Choose appropriate scoring functions for your use case
- Combine multiple metrics for comprehensive evaluation
- Consider both automated and human evaluation metrics
### 🔄 **Iterative Improvement**
- Run evaluations regularly during development
- Use evaluation results to identify areas for improvement
- Track performance changes over time
### 📈 **Analysis & Reporting**
- Analyze failures to understand model limitations
- Generate comprehensive evaluation reports
- Share results with stakeholders for informed decision-making
## Advanced Evaluation Scenarios
### Batch Evaluation
For evaluating large datasets efficiently:
```python
# Prepare large evaluation dataset
large_eval_dataset = [
{"input_query": query, "expected_answer": answer}
for query, answer in zip(queries, expected_answers)
]
# Run batch evaluation
batch_results = client.scoring.score(
input_rows=large_eval_dataset,
scoring_functions={
"basic::subset_of": None,
"llm_as_judge::accuracy": {"judge_model": "meta-llama/Llama-3.3-70B-Instruct"},
}
)
```
### Multi-Metric Evaluation
Combining different scoring approaches:
```python
comprehensive_scoring = {
"exact_match": "basic::exact_match",
"subset_match": "basic::subset_of",
"llm_judge": "llm_as_judge::accuracy",
"safety_check": "llm_as_judge::safety",
}
results = client.scoring.score(
input_rows=eval_rows,
scoring_functions=comprehensive_scoring
)
```
## Related Resources
- **[Agents](./agent)** - Building agents for evaluation
- **[Tools Integration](./tools)** - Using tools in evaluated agents
- **[Evaluation Reference](/docs/references/evals-reference)** - Complete API reference for evaluations
- **[Getting Started Notebook](https://colab.research.google.com/github/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb)** - Interactive examples
- **[Evaluation Examples](https://colab.research.google.com/drive/10CHyykee9j2OigaIcRv47BKG9mrNm0tJ?usp=sharing)** - Additional evaluation scenarios

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---
title: Building Applications
description: Comprehensive guides for building AI applications with Llama Stack
sidebar_label: Overview
sidebar_position: 5
---
# AI Application Examples
Llama Stack provides all the building blocks needed to create sophisticated AI applications.
## Getting Started
The best way to get started is to look at this comprehensive notebook which walks through the various APIs (from basic inference, to RAG agents) and how to use them.
**📓 [Building AI Applications Notebook](https://github.com/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb)**
## Core Topics
Here are the key topics that will help you build effective AI applications:
### 🤖 **Agent Development**
- **[Agent Framework](./agent)** - Understand the components and design patterns of the Llama Stack agent framework
- **[Agent Execution Loop](./agent_execution_loop)** - How agents process information, make decisions, and execute actions
- **[Agents vs Responses API](./responses_vs_agents)** - Learn when to use each API for different use cases
### 📚 **Knowledge Integration**
- **[RAG (Retrieval-Augmented Generation)](./rag)** - Enhance your agents with external knowledge through retrieval mechanisms
### 🛠️ **Capabilities & Extensions**
- **[Tools](./tools)** - Extend your agents' capabilities by integrating with external tools and APIs
### 📊 **Quality & Monitoring**
- **[Evaluations](./evals)** - Evaluate your agents' effectiveness and identify areas for improvement
- **[Telemetry](./telemetry)** - Monitor and analyze your agents' performance and behavior
- **[Safety](./safety)** - Implement guardrails and safety measures to ensure responsible AI behavior
### 🎮 **Interactive Development**
- **[Playground](./playground)** - Interactive environment for testing and developing applications
## Application Patterns
### 🤖 **Conversational Agents**
Build intelligent chatbots and assistants that can:
- Maintain context across conversations
- Access external knowledge bases
- Execute actions through tool integrations
- Apply safety filters and guardrails
### 📖 **RAG Applications**
Create knowledge-augmented applications that:
- Retrieve relevant information from documents
- Generate contextually accurate responses
- Handle large knowledge bases efficiently
- Provide source attribution
### 🔧 **Tool-Enhanced Systems**
Develop applications that can:
- Search the web for real-time information
- Interact with databases and APIs
- Perform calculations and analysis
- Execute complex multi-step workflows
### 🛡️ **Enterprise Applications**
Build production-ready systems with:
- Comprehensive safety measures
- Performance monitoring and analytics
- Scalable deployment configurations
- Evaluation and quality assurance
## Next Steps
1. **📖 Start with the Notebook** - Work through the complete tutorial
2. **🎯 Choose Your Pattern** - Pick the application type that matches your needs
3. **🏗️ Build Your Foundation** - Set up your [providers](/docs/providers/) and [distributions](/docs/distributions/)
4. **🚀 Deploy & Monitor** - Use our [deployment guides](/docs/deploying/) for production
## Related Resources
- **[Getting Started](/docs/getting-started/)** - Basic setup and concepts
- **[Providers](/docs/providers/)** - Available AI service providers
- **[Distributions](/docs/distributions/)** - Pre-configured deployment packages
- **[API Reference](/docs/api/)** - Complete API documentation

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---
title: Llama Stack Playground
description: Interactive interface to explore and experiment with Llama Stack capabilities
sidebar_label: Playground
sidebar_position: 10
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Llama Stack Playground
:::note[Experimental Feature]
The Llama Stack Playground is currently experimental and subject to change. We welcome feedback and contributions to help improve it.
:::
The Llama Stack Playground is a simple interface that aims to:
- **Showcase capabilities and concepts** of Llama Stack in an interactive environment
- **Demo end-to-end application code** to help users get started building their own applications
- **Provide a UI** to help users inspect and understand Llama Stack API providers and resources
## Key Features
### Interactive Playground Pages
The playground provides interactive pages for users to explore Llama Stack API capabilities:
#### Chatbot Interface
<video
controls
autoPlay
playsInline
muted
loop
style={{width: '100%'}}
>
<source src="https://github.com/user-attachments/assets/8d2ef802-5812-4a28-96e1-316038c84cbf" type="video/mp4" />
Your browser does not support the video tag.
</video>
<Tabs>
<TabItem value="chat" label="Chat">
**Simple Chat Interface**
- Chat directly with Llama models through an intuitive interface
- Uses the `/inference/chat-completion` streaming API under the hood
- Real-time message streaming for responsive interactions
- Perfect for testing model capabilities and prompt engineering
</TabItem>
<TabItem value="rag" label="RAG Chat">
**Document-Aware Conversations**
- Upload documents to create memory banks
- Chat with a RAG-enabled agent that can query your documents
- Uses Llama Stack's `/agents` API to create and manage RAG sessions
- Ideal for exploring knowledge-enhanced AI applications
</TabItem>
</Tabs>
#### Evaluation Interface
<video
controls
autoPlay
playsInline
muted
loop
style={{width: '100%'}}
>
<source src="https://github.com/user-attachments/assets/6cc1659f-eba4-49ca-a0a5-7c243557b4f5" type="video/mp4" />
Your browser does not support the video tag.
</video>
<Tabs>
<TabItem value="scoring" label="Scoring Evaluations">
**Custom Dataset Evaluation**
- Upload your own evaluation datasets
- Run evaluations using available scoring functions
- Uses Llama Stack's `/scoring` API for flexible evaluation workflows
- Great for testing application performance on custom metrics
</TabItem>
<TabItem value="benchmarks" label="Benchmark Evaluations">
<video
controls
autoPlay
playsInline
muted
loop
style={{width: '100%', marginBottom: '1rem'}}
>
<source src="https://github.com/user-attachments/assets/345845c7-2a2b-4095-960a-9ae40f6a93cf" type="video/mp4" />
Your browser does not support the video tag.
</video>
**Pre-registered Evaluation Tasks**
- Evaluate models or agents on pre-defined tasks
- Uses Llama Stack's `/eval` API for comprehensive evaluation
- Combines datasets and scoring functions for standardized testing
**Setup Requirements:**
Register evaluation datasets and benchmarks first:
```bash
# Register evaluation dataset
llama-stack-client datasets register \
--dataset-id "mmlu" \
--provider-id "huggingface" \
--url "https://huggingface.co/datasets/llamastack/evals" \
--metadata '{"path": "llamastack/evals", "name": "evals__mmlu__details", "split": "train"}' \
--schema '{"input_query": {"type": "string"}, "expected_answer": {"type": "string"}, "chat_completion_input": {"type": "string"}}'
# Register benchmark task
llama-stack-client benchmarks register \
--eval-task-id meta-reference-mmlu \
--provider-id meta-reference \
--dataset-id mmlu \
--scoring-functions basic::regex_parser_multiple_choice_answer
```
</TabItem>
</Tabs>
#### Inspection Interface
<video
controls
autoPlay
playsInline
muted
loop
style={{width: '100%'}}
>
<source src="https://github.com/user-attachments/assets/01d52b2d-92af-4e3a-b623-a9b8ba22ba99" type="video/mp4" />
Your browser does not support the video tag.
</video>
<Tabs>
<TabItem value="providers" label="API Providers">
**Provider Management**
- Inspect available Llama Stack API providers
- View provider configurations and capabilities
- Uses the `/providers` API for real-time provider information
- Essential for understanding your deployment's capabilities
</TabItem>
<TabItem value="resources" label="API Resources">
**Resource Exploration**
- Inspect Llama Stack API resources including:
- **Models**: Available language models
- **Datasets**: Registered evaluation datasets
- **Memory Banks**: Vector databases and knowledge stores
- **Benchmarks**: Evaluation tasks and scoring functions
- **Shields**: Safety and content moderation tools
- Uses `/<resources>/list` APIs for comprehensive resource visibility
- For detailed information about resources, see [Core Concepts](/docs/concepts)
</TabItem>
</Tabs>
## Getting Started
### Quick Start Guide
<Tabs>
<TabItem value="setup" label="Setup">
**1. Start the Llama Stack API Server**
```bash
# Build and run a distribution (example: together)
llama stack build --distro together --image-type venv
llama stack run together
```
**2. Start the Streamlit UI**
```bash
# Launch the playground interface
uv run --with ".[ui]" streamlit run llama_stack.core/ui/app.py
```
</TabItem>
<TabItem value="usage" label="Usage Tips">
**Making the Most of the Playground:**
- **Start with Chat**: Test basic model interactions and prompt engineering
- **Explore RAG**: Upload sample documents to see knowledge-enhanced responses
- **Try Evaluations**: Use the scoring interface to understand evaluation metrics
- **Inspect Resources**: Check what providers and resources are available
- **Experiment with Settings**: Adjust parameters to see how they affect results
</TabItem>
</Tabs>
### Available Distributions
The playground works with any Llama Stack distribution. Popular options include:
<Tabs>
<TabItem value="together" label="Together AI">
```bash
llama stack build --distro together --image-type venv
llama stack run together
```
**Features:**
- Cloud-hosted models
- Fast inference
- Multiple model options
</TabItem>
<TabItem value="ollama" label="Ollama (Local)">
```bash
llama stack build --distro ollama --image-type venv
llama stack run ollama
```
**Features:**
- Local model execution
- Privacy-focused
- No internet required
</TabItem>
<TabItem value="meta-reference" label="Meta Reference">
```bash
llama stack build --distro meta-reference --image-type venv
llama stack run meta-reference
```
**Features:**
- Reference implementation
- All API features available
- Best for development
</TabItem>
</Tabs>
## Use Cases & Examples
### Educational Use Cases
- **Learning Llama Stack**: Hands-on exploration of API capabilities
- **Prompt Engineering**: Interactive testing of different prompting strategies
- **RAG Experimentation**: Understanding how document retrieval affects responses
- **Evaluation Understanding**: See how different metrics evaluate model performance
### Development Use Cases
- **Prototype Testing**: Quick validation of application concepts
- **API Exploration**: Understanding available endpoints and parameters
- **Integration Planning**: Seeing how different components work together
- **Demo Creation**: Showcasing Llama Stack capabilities to stakeholders
### Research Use Cases
- **Model Comparison**: Side-by-side testing of different models
- **Evaluation Design**: Understanding how scoring functions work
- **Safety Testing**: Exploring shield effectiveness with different inputs
- **Performance Analysis**: Measuring model behavior across different scenarios
## Best Practices
### 🚀 **Getting Started**
- Begin with simple chat interactions to understand basic functionality
- Gradually explore more advanced features like RAG and evaluations
- Use the inspection tools to understand your deployment's capabilities
### 🔧 **Development Workflow**
- Use the playground to prototype before writing application code
- Test different parameter settings interactively
- Validate evaluation approaches before implementing them programmatically
### 📊 **Evaluation & Testing**
- Start with simple scoring functions before trying complex evaluations
- Use the playground to understand evaluation results before automation
- Test safety features with various input types
### 🎯 **Production Preparation**
- Use playground insights to inform your production API usage
- Test edge cases and error conditions interactively
- Validate resource configurations before deployment
## Related Resources
- **[Getting Started Guide](/docs/getting-started)** - Complete setup and introduction
- **[Core Concepts](/docs/concepts)** - Understanding Llama Stack fundamentals
- **[Agents](./agent)** - Building intelligent agents
- **[RAG (Retrieval Augmented Generation)](./rag)** - Knowledge-enhanced applications
- **[Evaluations](./evals)** - Comprehensive evaluation framework
- **[API Reference](/docs/api-reference)** - Complete API documentation

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---
title: Retrieval Augmented Generation (RAG)
description: Build knowledge-enhanced AI applications with external document retrieval
sidebar_label: RAG (Retrieval Augmented Generation)
sidebar_position: 2
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Retrieval Augmented Generation (RAG)
RAG enables your applications to reference and recall information from previous interactions or external documents.
## Architecture Overview
Llama Stack organizes the APIs that enable RAG into three layers:
1. **Lower-Level APIs**: Deal with raw storage and retrieval. These include Vector IO, KeyValue IO (coming soon) and Relational IO (also coming soon)
2. **RAG Tool**: A first-class tool as part of the [Tools API](./tools) that allows you to ingest documents (from URLs, files, etc) with various chunking strategies and query them smartly
3. **Agents API**: The top-level [Agents API](./agent) that allows you to create agents that can use the tools to answer questions, perform tasks, and more
![RAG System Architecture](/img/rag.png)
The RAG system uses lower-level storage for different types of data:
- **Vector IO**: For semantic search and retrieval
- **Key-Value and Relational IO**: For structured data storage
:::info[Future Storage Types]
We may add more storage types like Graph IO in the future.
:::
## Setting up Vector Databases
For this guide, we will use [Ollama](https://ollama.com/) as the inference provider. Ollama is an LLM runtime that allows you to run Llama models locally.
Here's how to set up a vector database for RAG:
```python
# Create HTTP client
import os
from llama_stack_client import LlamaStackClient
client = LlamaStackClient(base_url=f"http://localhost:{os.environ['LLAMA_STACK_PORT']}")
# Register a vector database
vector_db_id = "my_documents"
response = client.vector_dbs.register(
vector_db_id=vector_db_id,
embedding_model="all-MiniLM-L6-v2",
embedding_dimension=384,
provider_id="faiss",
)
```
## Document Ingestion
You can ingest documents into the vector database using two methods: directly inserting pre-chunked documents or using the RAG Tool.
### Direct Document Insertion
<Tabs>
<TabItem value="basic" label="Basic Insertion">
```python
# You can insert a pre-chunked document directly into the vector db
chunks = [
{
"content": "Your document text here",
"mime_type": "text/plain",
"metadata": {
"document_id": "doc1",
"author": "Jane Doe",
},
},
]
client.vector_io.insert(vector_db_id=vector_db_id, chunks=chunks)
```
</TabItem>
<TabItem value="embeddings" label="With Precomputed Embeddings">
If you decide to precompute embeddings for your documents, you can insert them directly into the vector database by including the embedding vectors in the chunk data. This is useful if you have a separate embedding service or if you want to customize the ingestion process.
```python
chunks_with_embeddings = [
{
"content": "First chunk of text",
"mime_type": "text/plain",
"embedding": [0.1, 0.2, 0.3, ...], # Your precomputed embedding vector
"metadata": {"document_id": "doc1", "section": "introduction"},
},
{
"content": "Second chunk of text",
"mime_type": "text/plain",
"embedding": [0.2, 0.3, 0.4, ...], # Your precomputed embedding vector
"metadata": {"document_id": "doc1", "section": "methodology"},
},
]
client.vector_io.insert(vector_db_id=vector_db_id, chunks=chunks_with_embeddings)
```
:::warning[Embedding Dimensions]
When providing precomputed embeddings, ensure the embedding dimension matches the `embedding_dimension` specified when registering the vector database.
:::
</TabItem>
</Tabs>
### Document Retrieval
You can query the vector database to retrieve documents based on their embeddings.
```python
# You can then query for these chunks
chunks_response = client.vector_io.query(
vector_db_id=vector_db_id,
query="What do you know about..."
)
```
## Using the RAG Tool
:::danger[Deprecation Notice]
The RAG Tool is being deprecated in favor of directly using the OpenAI-compatible Search API. We recommend migrating to the OpenAI APIs for better compatibility and future support.
:::
A better way to ingest documents is to use the RAG Tool. This tool allows you to ingest documents from URLs, files, etc. and automatically chunks them into smaller pieces. More examples for how to format a RAGDocument can be found in the [appendix](#more-ragdocument-examples).
### OpenAI API Integration & Migration
The RAG tool has been updated to use OpenAI-compatible APIs. This provides several benefits:
- **Files API Integration**: Documents are now uploaded using OpenAI's file upload endpoints
- **Vector Stores API**: Vector storage operations use OpenAI's vector store format with configurable chunking strategies
- **Error Resilience**: When processing multiple documents, individual failures are logged but don't crash the operation. Failed documents are skipped while successful ones continue processing.
### Migration Path
We recommend migrating to the OpenAI-compatible Search API for:
1. **Better OpenAI Ecosystem Integration**: Direct compatibility with OpenAI tools and workflows including the Responses API
2. **Future-Proof**: Continued support and feature development
3. **Full OpenAI Compatibility**: Vector Stores, Files, and Search APIs are fully compatible with OpenAI's Responses API
The OpenAI APIs are used under the hood, so you can continue to use your existing RAG Tool code with minimal changes. However, we recommend updating your code to use the new OpenAI-compatible APIs for better long-term support. If any documents fail to process, they will be logged in the response but will not cause the entire operation to fail.
### RAG Tool Example
```python
from llama_stack_client import RAGDocument
urls = ["memory_optimizations.rst", "chat.rst", "llama3.rst"]
documents = [
RAGDocument(
document_id=f"num-{i}",
content=f"https://raw.githubusercontent.com/pytorch/torchtune/main/docs/source/tutorials/{url}",
mime_type="text/plain",
metadata={},
)
for i, url in enumerate(urls)
]
client.tool_runtime.rag_tool.insert(
documents=documents,
vector_db_id=vector_db_id,
chunk_size_in_tokens=512,
)
# Query documents
results = client.tool_runtime.rag_tool.query(
vector_db_ids=[vector_db_id],
content="What do you know about...",
)
```
### Custom Context Configuration
You can configure how the RAG tool adds metadata to the context if you find it useful for your application:
```python
# Query documents with custom template
results = client.tool_runtime.rag_tool.query(
vector_db_ids=[vector_db_id],
content="What do you know about...",
query_config={
"chunk_template": "Result {index}\nContent: {chunk.content}\nMetadata: {metadata}\n",
},
)
```
## Building RAG-Enhanced Agents
One of the most powerful patterns is combining agents with RAG capabilities. Here's a complete example:
### Agent with Knowledge Search
```python
from llama_stack_client import Agent
# Create agent with memory
agent = Agent(
client,
model="meta-llama/Llama-3.3-70B-Instruct",
instructions="You are a helpful assistant",
tools=[
{
"name": "builtin::rag/knowledge_search",
"args": {
"vector_db_ids": [vector_db_id],
# Defaults
"query_config": {
"chunk_size_in_tokens": 512,
"chunk_overlap_in_tokens": 0,
"chunk_template": "Result {index}\nContent: {chunk.content}\nMetadata: {metadata}\n",
},
},
}
],
)
session_id = agent.create_session("rag_session")
# Ask questions about documents in the vector db, and the agent will query the db to answer the question.
response = agent.create_turn(
messages=[{"role": "user", "content": "How to optimize memory in PyTorch?"}],
session_id=session_id,
)
```
:::tip[Agent Instructions]
The `instructions` field in the `AgentConfig` can be used to guide the agent's behavior. It is important to experiment with different instructions to see what works best for your use case.
:::
### Document-Aware Conversations
You can also pass documents along with the user's message and ask questions about them:
```python
# Initial document ingestion
response = agent.create_turn(
messages=[
{"role": "user", "content": "I am providing some documents for reference."}
],
documents=[
{
"content": "https://raw.githubusercontent.com/pytorch/torchtune/main/docs/source/tutorials/memory_optimizations.rst",
"mime_type": "text/plain",
}
],
session_id=session_id,
)
# Query with RAG
response = agent.create_turn(
messages=[{"role": "user", "content": "What are the key topics in the documents?"}],
session_id=session_id,
)
```
### Viewing Agent Responses
You can print the response with the following:
```python
from llama_stack_client import AgentEventLogger
for log in AgentEventLogger().log(response):
log.print()
```
## Vector Database Management
### Unregistering Vector DBs
If you need to clean up and unregister vector databases, you can do so as follows:
<Tabs>
<TabItem value="single" label="Single Database">
```python
# Unregister a specified vector database
vector_db_id = "my_vector_db_id"
print(f"Unregistering vector database: {vector_db_id}")
client.vector_dbs.unregister(vector_db_id=vector_db_id)
```
</TabItem>
<TabItem value="all" label="All Databases">
```python
# Unregister all vector databases
for vector_db_id in client.vector_dbs.list():
print(f"Unregistering vector database: {vector_db_id.identifier}")
client.vector_dbs.unregister(vector_db_id=vector_db_id.identifier)
```
</TabItem>
</Tabs>
## Best Practices
### 🎯 **Document Chunking**
- Use appropriate chunk sizes (512 tokens is often a good starting point)
- Consider overlap between chunks for better context preservation
- Experiment with different chunking strategies for your content type
### 🔍 **Embedding Strategy**
- Choose embedding models that match your domain
- Consider the trade-off between embedding dimension and performance
- Test different embedding models for your specific use case
### 📊 **Query Optimization**
- Use specific, well-formed queries for better retrieval
- Experiment with different search strategies
- Consider hybrid approaches (keyword + semantic search)
### 🛡️ **Error Handling**
- Implement proper error handling for failed document processing
- Monitor ingestion success rates
- Have fallback strategies for retrieval failures
## Appendix
### More RAGDocument Examples
Here are various ways to create RAGDocument objects for different content types:
```python
from llama_stack_client import RAGDocument
import base64
# File URI
RAGDocument(document_id="num-0", content={"uri": "file://path/to/file"})
# Plain text
RAGDocument(document_id="num-1", content="plain text")
# Explicit text input
RAGDocument(
document_id="num-2",
content={
"type": "text",
"text": "plain text input",
}, # for inputs that should be treated as text explicitly
)
# Image from URL
RAGDocument(
document_id="num-3",
content={
"type": "image",
"image": {"url": {"uri": "https://mywebsite.com/image.jpg"}},
},
)
# Base64 encoded image
B64_ENCODED_IMAGE = base64.b64encode(
requests.get(
"https://raw.githubusercontent.com/meta-llama/llama-stack/refs/heads/main/docs/_static/llama-stack.png"
).content
)
RAGDocument(
document_id="num-4",
content={"type": "image", "image": {"data": B64_ENCODED_IMAGE}},
)
```
For more strongly typed interaction use the typed dicts found [here](https://github.com/meta-llama/llama-stack-client-python/blob/38cd91c9e396f2be0bec1ee96a19771582ba6f17/src/llama_stack_client/types/shared_params/document.py).

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---
title: Agents vs OpenAI Responses API
description: Compare the Agents API and OpenAI Responses API for building AI applications with tool calling capabilities
sidebar_label: Agents vs Responses API
sidebar_position: 5
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Agents vs OpenAI Responses API
Llama Stack (LLS) provides two different APIs for building AI applications with tool calling capabilities: the **Agents API** and the **OpenAI Responses API**. While both enable AI systems to use tools, and maintain full conversation history, they serve different use cases and have distinct characteristics.
:::note
**Note:** For simple and basic inferencing, you may want to use the [Chat Completions API](/docs/providers/openai-compatibility#chat-completions) directly, before progressing to Agents or Responses API.
:::
## Overview
### LLS Agents API
The Agents API is a full-featured, stateful system designed for complex, multi-turn conversations. It maintains conversation state through persistent sessions identified by a unique session ID. The API supports comprehensive agent lifecycle management, detailed execution tracking, and rich metadata about each interaction through a structured session/turn/step hierarchy. The API can orchestrate multiple tool calls within a single turn.
### OpenAI Responses API
The OpenAI Responses API is a full-featured, stateful system designed for complex, multi-turn conversations, with direct compatibility with OpenAI's conversational patterns enhanced by LLama Stack's tool calling capabilities. It maintains conversation state by chaining responses through a `previous_response_id`, allowing interactions to branch or continue from any prior point. Each response can perform multiple tool calls within a single turn.
### Key Differences
The LLS Agents API uses the Chat Completions API on the backend for inference as it's the industry standard for building AI applications and most LLM providers are compatible with this API. For a detailed comparison between Responses and Chat Completions, see [OpenAI's documentation](https://platform.openai.com/docs/guides/responses-vs-chat-completions).
Additionally, Agents let you specify input/output shields whereas Responses do not (though support is planned). Agents use a linear conversation model referenced by a single session ID. Responses, on the other hand, support branching, where each response can serve as a fork point, and conversations are tracked by the latest response ID. Responses also lets you dynamically choose the model, vector store, files, MCP servers, and more on each inference call, enabling more complex workflows. Agents require a static configuration for these components at the start of the session.
Today the Agents and Responses APIs can be used independently depending on the use case. But, it is also productive to treat the APIs as complementary. It is not currently supported, but it is planned for the LLS Agents API to alternatively use the Responses API as its backend instead of the default Chat Completions API, i.e., enabling a combination of the safety features of Agents with the dynamic configuration and branching capabilities of Responses.
## Feature Comparison
| Feature | LLS Agents API | OpenAI Responses API |
|---------|------------|---------------------|
| **Conversation Management** | Linear persistent sessions | Can branch from any previous response ID |
| **Input/Output Safety Shields** | Supported | Not yet supported |
| **Per-call Flexibility** | Static per-session configuration | Dynamic per-call configuration |
## Use Case Example: Research with Multiple Search Methods
Let's compare how both APIs handle a research task where we need to:
1. Search for current information and examples
2. Access different information sources dynamically
3. Continue the conversation based on search results
<Tabs>
<TabItem value="agents" label="Agents API">
### Session-based Configuration with Safety Shields
```python
# Create agent with static session configuration
agent = Agent(
client,
model="Llama3.2-3B-Instruct",
instructions="You are a helpful coding assistant",
tools=[
{
"name": "builtin::rag/knowledge_search",
"args": {"vector_db_ids": ["code_docs"]},
},
"builtin::code_interpreter",
],
input_shields=["llama_guard"],
output_shields=["llama_guard"],
)
session_id = agent.create_session("code_session")
# First turn: Search and execute
response1 = agent.create_turn(
messages=[
{
"role": "user",
"content": "Find examples of sorting algorithms and run a bubble sort on [3,1,4,1,5]",
},
],
session_id=session_id,
)
# Continue conversation in same session
response2 = agent.create_turn(
messages=[
{
"role": "user",
"content": "Now optimize that code and test it with a larger dataset",
},
],
session_id=session_id, # Same session, maintains full context
)
# Agents API benefits:
# ✅ Safety shields protect against malicious code execution
# ✅ Session maintains context between code executions
# ✅ Consistent tool configuration throughout conversation
print(f"First result: {response1.output_message.content}")
print(f"Optimization: {response2.output_message.content}")
```
</TabItem>
<TabItem value="responses" label="Responses API">
### Dynamic Per-call Configuration with Branching
```python
# First response: Use web search for latest algorithms
response1 = client.responses.create(
model="Llama3.2-3B-Instruct",
input="Search for the latest efficient sorting algorithms and their performance comparisons",
tools=[
{
"type": "web_search",
},
], # Web search for current information
)
# Continue conversation: Switch to file search for local docs
response2 = client.responses.create(
model="Llama3.2-1B-Instruct", # Switch to faster model
input="Now search my uploaded files for existing sorting implementations",
tools=[
{ # Using Responses API built-in tools
"type": "file_search",
"vector_store_ids": ["vs_abc123"], # Vector store containing uploaded files
},
],
previous_response_id=response1.id,
)
# Branch from first response: Try different search approach
response3 = client.responses.create(
model="Llama3.2-3B-Instruct",
input="Instead, search the web for Python-specific sorting best practices",
tools=[{"type": "web_search"}], # Different web search query
previous_response_id=response1.id, # Branch from response1
)
# Responses API benefits:
# ✅ Dynamic tool switching (web search ↔ file search per call)
# ✅ OpenAI-compatible tool patterns (web_search, file_search)
# ✅ Branch conversations to explore different information sources
# ✅ Model flexibility per search type
print(f"Web search results: {response1.output_message.content}")
print(f"File search results: {response2.output_message.content}")
print(f"Alternative web search: {response3.output_message.content}")
```
</TabItem>
</Tabs>
Both APIs demonstrate distinct strengths that make them valuable on their own for different scenarios. The Agents API excels in providing structured, safety-conscious workflows with persistent session management, while the Responses API offers flexibility through dynamic configuration and OpenAI compatible tool patterns.
## Use Case Examples
### 1. Research and Analysis with Safety Controls
**Best Choice: Agents API**
**Scenario:** You're building a research assistant for a financial institution that needs to analyze market data, execute code to process financial models, and search through internal compliance documents. The system must ensure all interactions are logged for regulatory compliance and protected by safety shields to prevent malicious code execution or data leaks.
**Why Agents API?** The Agents API provides persistent session management for iterative research workflows, built-in safety shields to protect against malicious code in financial models, and structured execution logs (session/turn/step) required for regulatory compliance. The static tool configuration ensures consistent access to your knowledge base and code interpreter throughout the entire research session.
### 2. Dynamic Information Gathering with Branching Exploration
**Best Choice: Responses API**
**Scenario:** You're building a competitive intelligence tool that helps businesses research market trends. Users need to dynamically switch between web search for current market data and file search through uploaded industry reports. They also want to branch conversations to explore different market segments simultaneously and experiment with different models for various analysis types.
**Why Responses API?** The Responses API's branching capability lets users explore multiple market segments from any research point. Dynamic per-call configuration allows switching between web search and file search as needed, while experimenting with different models (faster models for quick searches, more powerful models for deep analysis). The OpenAI-compatible tool patterns make integration straightforward.
### 3. OpenAI Migration with Advanced Tool Capabilities
**Best Choice: Responses API**
**Scenario:** You have an existing application built with OpenAI's Assistants API that uses file search and web search capabilities. You want to migrate to Llama Stack for better performance and cost control while maintaining the same tool calling patterns and adding new capabilities like dynamic vector store selection.
**Why Responses API?** The Responses API provides full OpenAI tool compatibility (`web_search`, `file_search`) with identical syntax, making migration seamless. The dynamic per-call configuration enables advanced features like switching vector stores per query or changing models based on query complexity - capabilities that extend beyond basic OpenAI functionality while maintaining compatibility.
### 4. Educational Programming Tutor
**Best Choice: Agents API**
**Scenario:** You're building a programming tutor that maintains student context across multiple sessions, safely executes code exercises, and tracks learning progress with audit trails for educators.
**Why Agents API?** Persistent sessions remember student progress across multiple interactions, safety shields prevent malicious code execution while allowing legitimate programming exercises, and structured execution logs help educators track learning patterns.
### 5. Advanced Software Debugging Assistant
**Best Choice: Agents API with Responses Backend**
**Scenario:** You're building a debugging assistant that helps developers troubleshoot complex issues. It needs to maintain context throughout a debugging session, safely execute diagnostic code, switch between different analysis tools dynamically, and branch conversations to explore multiple potential causes simultaneously.
**Why Agents + Responses?** The Agent provides safety shields for code execution and session management for the overall debugging workflow. The underlying Responses API enables dynamic model selection and flexible tool configuration per query, while branching lets you explore different theories (memory leak vs. concurrency issue) from the same debugging point and compare results.
:::info[Future Enhancement]
The ability to use Responses API as the backend for Agents is not yet implemented but is planned for a future release. Currently, Agents use Chat Completions API as their backend by default.
:::
## Decision Framework
Use this framework to choose the right API for your use case:
### Choose Agents API when:
- ✅ You need **safety shields** for input/output validation
- ✅ Your application requires **linear conversation flow** with persistent context
- ✅ You need **audit trails** and structured execution logs
- ✅ Your tool configuration is **static** throughout the session
- ✅ You're building **educational, financial, or enterprise** applications with compliance requirements
### Choose Responses API when:
- ✅ You need **conversation branching** to explore multiple paths
- ✅ You want **dynamic per-call configuration** (models, tools, vector stores)
- ✅ You're **migrating from OpenAI** and want familiar tool patterns
- ✅ You need **OpenAI compatibility** for existing workflows
- ✅ Your application benefits from **flexible, experimental** interactions
## Related Resources
- **[Agents](./agent)** - Understanding the Agents API fundamentals
- **[Agent Execution Loop](./agent_execution_loop)** - How agents process turns and steps
- **[Tools Integration](./tools)** - Adding capabilities to both APIs
- **[OpenAI Compatibility](/docs/providers/openai-compatibility)** - Using OpenAI-compatible endpoints
- **[Safety Guardrails](./safety)** - Implementing safety measures in agents

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---
title: Safety Guardrails
description: Implement safety measures and content moderation in Llama Stack applications
sidebar_label: Safety
sidebar_position: 9
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Safety Guardrails
Safety is a critical component of any AI application. Llama Stack provides a comprehensive Shield system that can be applied at multiple touchpoints to ensure responsible AI behavior and content moderation.
## Shield System Overview
The Shield system in Llama Stack provides:
- **Content filtering** for both input and output messages
- **Multi-touchpoint protection** across your application flow
- **Configurable safety policies** tailored to your use case
- **Integration with agents** for automated safety enforcement
## Basic Shield Usage
### Registering a Safety Shield
<Tabs>
<TabItem value="registration" label="Shield Registration">
```python
# Register a safety shield
shield_id = "content_safety"
client.shields.register(
shield_id=shield_id,
provider_shield_id="llama-guard-basic"
)
```
</TabItem>
<TabItem value="manual-check" label="Manual Safety Check">
```python
# Run content through shield manually
response = client.safety.run_shield(
shield_id=shield_id,
messages=[{"role": "user", "content": "User message here"}]
)
if response.violation:
print(f"Safety violation detected: {response.violation.user_message}")
# Handle violation appropriately
else:
print("Content passed safety checks")
```
</TabItem>
</Tabs>
## Agent Integration
Shields can be automatically applied to agent interactions for seamless safety enforcement:
<Tabs>
<TabItem value="input-shields" label="Input Shields">
```python
from llama_stack_client import Agent
# Create agent with input safety shields
agent = Agent(
client,
model="meta-llama/Llama-3.2-3B-Instruct",
instructions="You are a helpful assistant",
input_shields=["content_safety"], # Shield user inputs
tools=["builtin::websearch"],
)
session_id = agent.create_session("safe_session")
# All user inputs will be automatically screened
response = agent.create_turn(
messages=[{"role": "user", "content": "Tell me about AI safety"}],
session_id=session_id,
)
```
</TabItem>
<TabItem value="output-shields" label="Output Shields">
```python
# Create agent with output safety shields
agent = Agent(
client,
model="meta-llama/Llama-3.2-3B-Instruct",
instructions="You are a helpful assistant",
output_shields=["content_safety"], # Shield agent outputs
tools=["builtin::websearch"],
)
session_id = agent.create_session("safe_session")
# All agent responses will be automatically screened
response = agent.create_turn(
messages=[{"role": "user", "content": "Help me with my research"}],
session_id=session_id,
)
```
</TabItem>
<TabItem value="both-shields" label="Input & Output Shields">
```python
# Create agent with comprehensive safety coverage
agent = Agent(
client,
model="meta-llama/Llama-3.2-3B-Instruct",
instructions="You are a helpful assistant",
input_shields=["content_safety"], # Screen user inputs
output_shields=["content_safety"], # Screen agent outputs
tools=["builtin::websearch"],
)
session_id = agent.create_session("fully_protected_session")
# Both input and output are automatically protected
response = agent.create_turn(
messages=[{"role": "user", "content": "Research question here"}],
session_id=session_id,
)
```
</TabItem>
</Tabs>
## Available Shield Types
### Llama Guard Shields
Llama Guard provides state-of-the-art content safety classification:
<Tabs>
<TabItem value="basic" label="Basic Llama Guard">
```python
# Basic Llama Guard for general content safety
client.shields.register(
shield_id="llama_guard_basic",
provider_shield_id="llama-guard-basic"
)
```
**Use Cases:**
- General content moderation
- Harmful content detection
- Basic safety compliance
</TabItem>
<TabItem value="advanced" label="Advanced Llama Guard">
```python
# Advanced Llama Guard with custom categories
client.shields.register(
shield_id="llama_guard_advanced",
provider_shield_id="llama-guard-advanced",
config={
"categories": [
"violence", "hate_speech", "sexual_content",
"self_harm", "illegal_activity"
],
"threshold": 0.8
}
)
```
**Use Cases:**
- Fine-tuned safety policies
- Domain-specific content filtering
- Enterprise compliance requirements
</TabItem>
</Tabs>
### Custom Safety Shields
Create domain-specific safety shields for specialized use cases:
```python
# Register custom safety shield
client.shields.register(
shield_id="financial_compliance",
provider_shield_id="custom-financial-shield",
config={
"detect_pii": True,
"financial_advice_warning": True,
"regulatory_compliance": "FINRA"
}
)
```
## Safety Response Handling
When safety violations are detected, handle them appropriately:
<Tabs>
<TabItem value="basic-handling" label="Basic Handling">
```python
response = client.safety.run_shield(
shield_id="content_safety",
messages=[{"role": "user", "content": "Potentially harmful content"}]
)
if response.violation:
violation = response.violation
print(f"Violation Type: {violation.violation_type}")
print(f"User Message: {violation.user_message}")
print(f"Metadata: {violation.metadata}")
# Log the violation for audit purposes
logger.warning(f"Safety violation detected: {violation.violation_type}")
# Provide appropriate user feedback
return "I can't help with that request. Please try asking something else."
```
</TabItem>
<TabItem value="advanced-handling" label="Advanced Handling">
```python
def handle_safety_response(safety_response, user_message):
"""Advanced safety response handling with logging and user feedback"""
if not safety_response.violation:
return {"safe": True, "message": "Content passed safety checks"}
violation = safety_response.violation
# Log violation details
audit_log = {
"timestamp": datetime.now().isoformat(),
"violation_type": violation.violation_type,
"original_message": user_message,
"shield_response": violation.user_message,
"metadata": violation.metadata
}
logger.warning(f"Safety violation: {audit_log}")
# Determine appropriate response based on violation type
if violation.violation_type == "hate_speech":
user_feedback = "I can't engage with content that contains hate speech. Let's keep our conversation respectful."
elif violation.violation_type == "violence":
user_feedback = "I can't provide information that could promote violence. How else can I help you today?"
else:
user_feedback = "I can't help with that request. Please try asking something else."
return {
"safe": False,
"user_feedback": user_feedback,
"violation_details": audit_log
}
# Usage
safety_result = handle_safety_response(response, user_input)
if not safety_result["safe"]:
return safety_result["user_feedback"]
```
</TabItem>
</Tabs>
## Safety Configuration Best Practices
### 🛡️ **Multi-Layer Protection**
- Use both input and output shields for comprehensive coverage
- Combine multiple shield types for different threat categories
- Implement fallback mechanisms when shields fail
### 📊 **Monitoring & Auditing**
- Log all safety violations for compliance and analysis
- Monitor false positive rates to tune shield sensitivity
- Track safety metrics across different use cases
### ⚙️ **Configuration Management**
- Use environment-specific safety configurations
- Implement A/B testing for shield effectiveness
- Regularly update shield models and policies
### 🔧 **Integration Patterns**
- Integrate shields early in the development process
- Test safety measures with adversarial inputs
- Provide clear user feedback for violations
## Advanced Safety Scenarios
### Context-Aware Safety
```python
# Safety shields that consider conversation context
agent = Agent(
client,
model="meta-llama/Llama-3.2-3B-Instruct",
instructions="You are a healthcare assistant",
input_shields=["medical_safety"],
output_shields=["medical_safety"],
# Context helps shields make better decisions
safety_context={
"domain": "healthcare",
"user_type": "patient",
"compliance_level": "HIPAA"
}
)
```
### Dynamic Shield Selection
```python
def select_shield_for_user(user_profile):
"""Select appropriate safety shield based on user context"""
if user_profile.age < 18:
return "child_safety_shield"
elif user_profile.context == "enterprise":
return "enterprise_compliance_shield"
else:
return "general_safety_shield"
# Use dynamic shield selection
shield_id = select_shield_for_user(current_user)
response = client.safety.run_shield(
shield_id=shield_id,
messages=messages
)
```
## Compliance and Regulations
### Industry-Specific Safety
<Tabs>
<TabItem value="healthcare" label="Healthcare (HIPAA)">
```python
# Healthcare-specific safety configuration
client.shields.register(
shield_id="hipaa_compliance",
provider_shield_id="healthcare-safety-shield",
config={
"detect_phi": True, # Protected Health Information
"medical_advice_warning": True,
"regulatory_framework": "HIPAA"
}
)
```
</TabItem>
<TabItem value="financial" label="Financial (FINRA)">
```python
# Financial services safety configuration
client.shields.register(
shield_id="finra_compliance",
provider_shield_id="financial-safety-shield",
config={
"detect_financial_advice": True,
"investment_disclaimers": True,
"regulatory_framework": "FINRA"
}
)
```
</TabItem>
<TabItem value="education" label="Education (COPPA)">
```python
# Educational platform safety for minors
client.shields.register(
shield_id="coppa_compliance",
provider_shield_id="educational-safety-shield",
config={
"child_protection": True,
"educational_content_only": True,
"regulatory_framework": "COPPA"
}
)
```
</TabItem>
</Tabs>
## Related Resources
- **[Agents](./agent)** - Integrating safety shields with intelligent agents
- **[Agent Execution Loop](./agent_execution_loop)** - Understanding safety in the execution flow
- **[Evaluations](./evals)** - Evaluating safety shield effectiveness
- **[Telemetry](./telemetry)** - Monitoring safety violations and metrics
- **[Llama Guard Documentation](https://github.com/meta-llama/PurpleLlama/tree/main/Llama-Guard3)** - Advanced safety model details

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---
title: Telemetry
description: Monitor and observe Llama Stack applications with comprehensive telemetry capabilities
sidebar_label: Telemetry
sidebar_position: 8
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Telemetry
The Llama Stack telemetry system provides comprehensive tracing, metrics, and logging capabilities. It supports multiple sink types including OpenTelemetry, SQLite, and Console output for complete observability of your AI applications.
## Event Types
The telemetry system supports three main types of events:
<Tabs>
<TabItem value="unstructured" label="Unstructured Logs">
Free-form log messages with severity levels for general application logging:
```python
unstructured_log_event = UnstructuredLogEvent(
message="This is a log message",
severity=LogSeverity.INFO
)
```
</TabItem>
<TabItem value="metrics" label="Metric Events">
Numerical measurements with units for tracking performance and usage:
```python
metric_event = MetricEvent(
metric="my_metric",
value=10,
unit="count"
)
```
</TabItem>
<TabItem value="structured" label="Structured Logs">
System events like span start/end that provide structured operation tracking:
```python
structured_log_event = SpanStartPayload(
name="my_span",
parent_span_id="parent_span_id"
)
```
</TabItem>
</Tabs>
## Spans and Traces
- **Spans**: Represent individual operations with timing information and hierarchical relationships
- **Traces**: Collections of related spans that form a complete request flow across your application
This hierarchical structure allows you to understand the complete execution path of requests through your Llama Stack application.
## Automatic Metrics Generation
Llama Stack automatically generates metrics during inference operations. These metrics are aggregated at the **inference request level** and provide insights into token usage and model performance.
### Available Metrics
The following metrics are automatically generated for each inference request:
| Metric Name | Type | Unit | Description | Labels |
|-------------|------|------|-------------|--------|
| `llama_stack_prompt_tokens_total` | Counter | `tokens` | Number of tokens in the input prompt | `model_id`, `provider_id` |
| `llama_stack_completion_tokens_total` | Counter | `tokens` | Number of tokens in the generated response | `model_id`, `provider_id` |
| `llama_stack_tokens_total` | Counter | `tokens` | Total tokens used (prompt + completion) | `model_id`, `provider_id` |
### Metric Generation Flow
1. **Token Counting**: During inference operations (chat completion, completion, etc.), the system counts tokens in both input prompts and generated responses
2. **Metric Construction**: For each request, `MetricEvent` objects are created with the token counts
3. **Telemetry Logging**: Metrics are sent to the configured telemetry sinks
4. **OpenTelemetry Export**: When OpenTelemetry is enabled, metrics are exposed as standard OpenTelemetry counters
### Metric Aggregation Level
All metrics are generated and aggregated at the **inference request level**. This means:
- Each individual inference request generates its own set of metrics
- Metrics are not pre-aggregated across multiple requests
- Aggregation (sums, averages, etc.) can be performed by your observability tools (Prometheus, Grafana, etc.)
- Each metric includes labels for `model_id` and `provider_id` to enable filtering and grouping
### Example Metric Event
```python
MetricEvent(
trace_id="1234567890abcdef",
span_id="abcdef1234567890",
metric="total_tokens",
value=150,
timestamp=1703123456.789,
unit="tokens",
attributes={
"model_id": "meta-llama/Llama-3.2-3B-Instruct",
"provider_id": "tgi"
},
)
```
## Telemetry Sinks
Choose from multiple sink types based on your observability needs:
<Tabs>
<TabItem value="opentelemetry" label="OpenTelemetry">
Send events to an OpenTelemetry Collector for integration with observability platforms:
**Use Cases:**
- Visualizing traces in tools like Jaeger
- Collecting metrics for Prometheus
- Integration with enterprise observability stacks
**Features:**
- Standard OpenTelemetry format
- Compatible with all OpenTelemetry collectors
- Supports both traces and metrics
</TabItem>
<TabItem value="sqlite" label="SQLite">
Store events in a local SQLite database for direct querying:
**Use Cases:**
- Local development and debugging
- Custom analytics and reporting
- Offline analysis of application behavior
**Features:**
- Direct SQL querying capabilities
- Persistent local storage
- No external dependencies
</TabItem>
<TabItem value="console" label="Console">
Print events to the console for immediate debugging:
**Use Cases:**
- Development and testing
- Quick debugging sessions
- Simple logging without external tools
**Features:**
- Immediate output visibility
- No setup required
- Human-readable format
</TabItem>
</Tabs>
## Configuration
### Meta-Reference Provider
Currently, only the meta-reference provider is implemented. It can be configured to send events to multiple sink types:
```yaml
telemetry:
- provider_id: meta-reference
provider_type: inline::meta-reference
config:
service_name: "llama-stack-service"
sinks: ['console', 'sqlite', 'otel_trace', 'otel_metric']
otel_exporter_otlp_endpoint: "http://localhost:4318"
sqlite_db_path: "/path/to/telemetry.db"
```
### Environment Variables
Configure telemetry behavior using environment variables:
- **`OTEL_EXPORTER_OTLP_ENDPOINT`**: OpenTelemetry Collector endpoint (default: `http://localhost:4318`)
- **`OTEL_SERVICE_NAME`**: Service name for telemetry (default: empty string)
- **`TELEMETRY_SINKS`**: Comma-separated list of sinks (default: `console,sqlite`)
## Visualization with Jaeger
The `otel_trace` sink works with any service compatible with the OpenTelemetry collector. Traces and metrics use separate endpoints but can share the same collector.
### Starting Jaeger
Start a Jaeger instance with OTLP HTTP endpoint at 4318 and the Jaeger UI at 16686:
```bash
docker run --pull always --rm --name jaeger \
-p 16686:16686 -p 4318:4318 \
jaegertracing/jaeger:2.1.0
```
Once running, you can visualize traces by navigating to [http://localhost:16686/](http://localhost:16686/).
## Querying Metrics
When using the OpenTelemetry sink, metrics are exposed in standard format and can be queried through various tools:
<Tabs>
<TabItem value="prometheus" label="Prometheus Queries">
Example Prometheus queries for analyzing token usage:
```promql
# Total tokens used across all models
sum(llama_stack_tokens_total)
# Tokens per model
sum by (model_id) (llama_stack_tokens_total)
# Average tokens per request over 5 minutes
rate(llama_stack_tokens_total[5m])
# Token usage by provider
sum by (provider_id) (llama_stack_tokens_total)
```
</TabItem>
<TabItem value="grafana" label="Grafana Dashboards">
Create dashboards using Prometheus as a data source:
- **Token Usage Over Time**: Line charts showing token consumption trends
- **Model Performance**: Comparison of different models by token efficiency
- **Provider Analysis**: Breakdown of usage across different providers
- **Request Patterns**: Understanding peak usage times and patterns
</TabItem>
<TabItem value="otlp" label="OpenTelemetry Collector">
Forward metrics to other observability systems:
- Export to multiple backends simultaneously
- Apply transformations and filtering
- Integrate with existing monitoring infrastructure
</TabItem>
</Tabs>
## SQLite Querying
The `sqlite` sink allows you to query traces without an external system. This is particularly useful for development and custom analytics.
### Example Queries
```sql
-- Query recent traces
SELECT * FROM traces WHERE timestamp > datetime('now', '-1 hour');
-- Analyze span durations
SELECT name, AVG(duration_ms) as avg_duration
FROM spans
GROUP BY name
ORDER BY avg_duration DESC;
-- Find slow operations
SELECT * FROM spans
WHERE duration_ms > 1000
ORDER BY duration_ms DESC;
```
:::tip[Advanced Analytics]
Refer to the [Getting Started notebook](https://github.com/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb) for more examples on querying traces and spans programmatically.
:::
## Best Practices
### 🔍 **Monitoring Strategy**
- Use OpenTelemetry for production environments
- Combine multiple sinks for development (console + SQLite)
- Set up alerts on key metrics like token usage and error rates
### 📊 **Metrics Analysis**
- Track token usage trends to optimize costs
- Monitor response times across different models
- Analyze usage patterns to improve resource allocation
### 🚨 **Alerting & Debugging**
- Set up alerts for unusual token consumption spikes
- Use trace data to debug performance issues
- Monitor error rates and failure patterns
### 🔧 **Configuration Management**
- Use environment variables for flexible deployment
- Configure appropriate retention policies for SQLite
- Ensure proper network access to OpenTelemetry collectors
## Integration Examples
### Basic Telemetry Setup
```python
from llama_stack_client import LlamaStackClient
# Client with telemetry headers
client = LlamaStackClient(
base_url="http://localhost:8000",
extra_headers={
"X-Telemetry-Service": "my-ai-app",
"X-Telemetry-Version": "1.0.0"
}
)
# All API calls will be automatically traced
response = client.inference.chat_completion(
model="meta-llama/Llama-3.2-3B-Instruct",
messages=[{"role": "user", "content": "Hello!"}]
)
```
### Custom Telemetry Context
```python
# Add custom span attributes for better tracking
with tracer.start_as_current_span("custom_operation") as span:
span.set_attribute("user_id", "user123")
span.set_attribute("operation_type", "chat_completion")
response = client.inference.chat_completion(
model="meta-llama/Llama-3.2-3B-Instruct",
messages=[{"role": "user", "content": "Hello!"}]
)
```
## Related Resources
- **[Agents](./agent)** - Monitoring agent execution with telemetry
- **[Evaluations](./evals)** - Using telemetry data for performance evaluation
- **[Getting Started Notebook](https://github.com/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb)** - Telemetry examples and queries
- **[OpenTelemetry Documentation](https://opentelemetry.io/)** - Comprehensive observability framework
- **[Jaeger Documentation](https://www.jaegertracing.io/)** - Distributed tracing visualization

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---
title: Tools
description: Extend agent capabilities with external tools and function calling
sidebar_label: Tools
sidebar_position: 6
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Tools
Tools are functions that can be invoked by an agent to perform tasks. They are organized into tool groups and registered with specific providers. Each tool group represents a collection of related tools from a single provider. They are organized into groups so that state can be externalized: the collection operates on the same state typically.
An example of this would be a "db_access" tool group that contains tools for interacting with a database. "list_tables", "query_table", "insert_row" could be examples of tools in this group.
Tools are treated as any other resource in llama stack like models. You can register them, have providers for them etc.
When instantiating an agent, you can provide it a list of tool groups that it has access to. Agent gets the corresponding tool definitions for the specified tool groups and passes them along to the model.
Refer to the [Building AI Applications](https://github.com/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb) notebook for more examples on how to use tools.
## Server-side vs. Client-side Tool Execution
Llama Stack allows you to use both server-side and client-side tools. With server-side tools, `agent.create_turn` can perform execution of the tool calls emitted by the model transparently giving the user the final answer desired. If client-side tools are provided, the tool call is sent back to the user for execution and optional continuation using the `agent.resume_turn` method.
## Server-side Tools
Llama Stack provides built-in providers for some common tools. These include web search, math, and RAG capabilities.
### Web Search
You have three providers to execute the web search tool calls generated by a model: Brave Search, Bing Search, and Tavily Search.
To indicate that the web search tool calls should be executed by brave-search, you can point the "builtin::websearch" toolgroup to the "brave-search" provider.
```python
client.toolgroups.register(
toolgroup_id="builtin::websearch",
provider_id="brave-search",
args={"max_results": 5},
)
```
The tool requires an API key which can be provided either in the configuration or through the request header `X-LlamaStack-Provider-Data`. The format of the header is:
```
{"<provider_name>_api_key": <your api key>}
```
### Math
The WolframAlpha tool provides access to computational knowledge through the WolframAlpha API.
```python
client.toolgroups.register(
toolgroup_id="builtin::wolfram_alpha",
provider_id="wolfram-alpha"
)
```
Example usage:
```python
result = client.tool_runtime.invoke_tool(
tool_name="wolfram_alpha",
args={"query": "solve x^2 + 2x + 1 = 0"}
)
```
### RAG
The RAG tool enables retrieval of context from various types of memory banks (vector, key-value, keyword, and graph).
```python
# Register Memory tool group
client.toolgroups.register(
toolgroup_id="builtin::rag",
provider_id="faiss",
args={"max_chunks": 5, "max_tokens_in_context": 4096},
)
```
Features:
- Support for multiple memory bank types
- Configurable query generation
- Context retrieval with token limits
:::note[Default Configuration]
By default, llama stack run.yaml defines toolgroups for web search, wolfram alpha and rag, that are provided by tavily-search, wolfram-alpha and rag providers.
:::
## Model Context Protocol (MCP)
[MCP](https://github.com/modelcontextprotocol) is an upcoming, popular standard for tool discovery and execution. It is a protocol that allows tools to be dynamically discovered from an MCP endpoint and can be used to extend the agent's capabilities.
### Using Remote MCP Servers
You can find some popular remote MCP servers [here](https://github.com/jaw9c/awesome-remote-mcp-servers). You can register them as toolgroups in the same way as local providers.
```python
client.toolgroups.register(
toolgroup_id="mcp::deepwiki",
provider_id="model-context-protocol",
mcp_endpoint=URL(uri="https://mcp.deepwiki.com/sse"),
)
```
Note that most of the more useful MCP servers need you to authenticate with them. Many of them use OAuth2.0 for authentication. You can provide authorization headers to send to the MCP server using the "Provider Data" abstraction provided by Llama Stack. When making an agent call,
```python
agent = Agent(
...,
tools=["mcp::deepwiki"],
extra_headers={
"X-LlamaStack-Provider-Data": json.dumps(
{
"mcp_headers": {
"http://mcp.deepwiki.com/sse": {
"Authorization": "Bearer <your_access_token>",
},
},
}
),
},
)
agent.create_turn(...)
```
### Running Your Own MCP Server
Here's an example of how to run a simple MCP server that exposes a File System as a set of tools to the Llama Stack agent.
<Tabs>
<TabItem value="setup" label="Server Setup">
```shell
# Start your MCP server
mkdir /tmp/content
touch /tmp/content/foo
touch /tmp/content/bar
npx -y supergateway --port 8000 --stdio 'npx -y @modelcontextprotocol/server-filesystem /tmp/content'
```
</TabItem>
<TabItem value="register" label="Registration">
```python
# Register the MCP server as a tool group
client.toolgroups.register(
toolgroup_id="mcp::filesystem",
provider_id="model-context-protocol",
mcp_endpoint=URL(uri="http://localhost:8000/sse"),
)
```
</TabItem>
</Tabs>
## Adding Custom (Client-side) Tools
When you want to use tools other than the built-in tools, you just need to implement a python function with a docstring. The content of the docstring will be used to describe the tool and the parameters and passed along to the generative model.
```python
# Example tool definition
def my_tool(input: int) -> int:
"""
Runs my awesome tool.
:param input: some int parameter
"""
return input * 2
```
:::tip[Documentation Best Practices]
We employ python docstrings to describe the tool and the parameters. It is important to document the tool and the parameters so that the model can use the tool correctly. It is recommended to experiment with different docstrings to see how they affect the model's behavior.
:::
Once defined, simply pass the tool to the agent config. `Agent` will take care of the rest (calling the model with the tool definition, executing the tool, and returning the result to the model for the next iteration).
```python
# Example agent config with client provided tools
agent = Agent(client, ..., tools=[my_tool])
```
Refer to [llama-stack-apps](https://github.com/meta-llama/llama-stack-apps/blob/main/examples/agents/e2e_loop_with_client_tools.py) for an example of how to use client provided tools.
## Tool Invocation
Tools can be invoked using the `invoke_tool` method:
```python
result = client.tool_runtime.invoke_tool(
tool_name="web_search",
kwargs={"query": "What is the capital of France?"}
)
```
The result contains:
- `content`: The tool's output
- `error_message`: Optional error message if the tool failed
- `error_code`: Optional error code if the tool failed
## Listing Available Tools
You can list all available tools or filter by tool group:
```python
# List all tools
all_tools = client.tools.list_tools()
# List tools in a specific group
group_tools = client.tools.list_tools(toolgroup_id="search_tools")
```
## Complete Examples
### Web Search Agent
<Tabs>
<TabItem value="setup" label="Setup & Configuration">
1. Start by registering a Tavily API key at [Tavily](https://tavily.com/).
2. [Optional] Provide the API key directly to the Llama Stack server
```bash
export TAVILY_SEARCH_API_KEY="your key"
```
```bash
--env TAVILY_SEARCH_API_KEY=${TAVILY_SEARCH_API_KEY}
```
</TabItem>
<TabItem value="implementation" label="Implementation">
```python
from llama_stack_client.lib.agents.agent import Agent
from llama_stack_client.types.agent_create_params import AgentConfig
from llama_stack_client.lib.agents.event_logger import EventLogger
from llama_stack_client import LlamaStackClient
client = LlamaStackClient(
base_url=f"http://localhost:8321",
provider_data={
"tavily_search_api_key": "your_TAVILY_SEARCH_API_KEY"
}, # Set this from the client side. No need to provide it if it has already been configured on the Llama Stack server.
)
agent = Agent(
client,
model="meta-llama/Llama-3.2-3B-Instruct",
instructions=(
"You are a web search assistant, must use websearch tool to look up the most current and precise information available. "
),
tools=["builtin::websearch"],
)
session_id = agent.create_session("websearch-session")
response = agent.create_turn(
messages=[
{"role": "user", "content": "How did the USA perform in the last Olympics?"}
],
session_id=session_id,
)
for log in EventLogger().log(response):
log.print()
```
</TabItem>
</Tabs>
### WolframAlpha Math Agent
<Tabs>
<TabItem value="setup" label="Setup & Configuration">
1. Start by registering for a WolframAlpha API key at [WolframAlpha Developer Portal](https://developer.wolframalpha.com/access).
2. Provide the API key either when starting the Llama Stack server:
```bash
--env WOLFRAM_ALPHA_API_KEY=${WOLFRAM_ALPHA_API_KEY}
```
or from the client side:
```python
client = LlamaStackClient(
base_url="http://localhost:8321",
provider_data={"wolfram_alpha_api_key": wolfram_api_key},
)
```
</TabItem>
<TabItem value="implementation" label="Implementation">
```python
# Configure the tools in the Agent by setting tools=["builtin::wolfram_alpha"]
agent = Agent(
client,
model="meta-llama/Llama-3.2-3B-Instruct",
instructions="You are a mathematical assistant that can solve complex equations.",
tools=["builtin::wolfram_alpha"],
)
session_id = agent.create_session("math-session")
# Example user query
response = agent.create_turn(
messages=[{"role": "user", "content": "Solve x^2 + 2x + 1 = 0 using WolframAlpha"}],
session_id=session_id,
)
```
</TabItem>
</Tabs>
## Best Practices
### 🛠️ **Tool Selection**
- Use **server-side tools** for production applications requiring reliability and security
- Use **client-side tools** for development, prototyping, or specialized integrations
- Combine multiple tool types for comprehensive functionality
### 📝 **Documentation**
- Write clear, detailed docstrings for custom tools
- Include parameter descriptions and expected return types
- Test tool descriptions with the model to ensure proper usage
### 🔐 **Security**
- Store API keys securely using environment variables or secure configuration
- Use the `X-LlamaStack-Provider-Data` header for dynamic authentication
- Validate tool inputs and outputs for security
### 🔄 **Error Handling**
- Implement proper error handling in custom tools
- Use structured error responses with meaningful messages
- Monitor tool performance and reliability
## Related Resources
- **[Agents](./agent)** - Building intelligent agents with tools
- **[RAG (Retrieval Augmented Generation)](./rag)** - Using knowledge retrieval tools
- **[Agent Execution Loop](./agent_execution_loop)** - Understanding tool execution flow
- **[Building AI Applications Notebook](https://github.com/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb)** - Comprehensive examples
- **[Llama Stack Apps Examples](https://github.com/meta-llama/llama-stack-apps)** - Real-world tool implementations

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---
title: API Stability Leveling
description: Understanding API stability levels and versioning in Llama Stack
sidebar_label: API Stability
sidebar_position: 4
---
# Llama Stack API Stability Leveling
In order to provide a stable experience in Llama Stack, the various APIs need different stability levels indicating the level of support, backwards compatability, and overall production readiness.
## Different Levels
### v1alpha
- Little to no expectation of support between versions
- Breaking changes are permitted
- Datatypes and parameters can break
- Routes can be added and removed
#### Graduation Criteria
- an API can graduate from `v1alpha` to `v1beta` if the team has identified the extent of the non-optional routes and the shape of their parameters/return types for the API eg. `/v1/openai/chat/completions`. Optional types can change.
- CRUD must stay stable once in `v1beta`. This is a commitment to backward compatibility, guaranteeing that most code you write against the v1beta version will not break during future updates. We may make additive changes (like adding a new, optional field to a response), but we will not make breaking changes (like renaming an existing "modelName" field to "name", changing an ID's data type from an integer to a string, or altering an endpoint URL).
- for OpenAI APIs, a comparison to the OpenAI spec for the specific API can be done to ensure completeness.
### v1beta
- API routes remain consistent between versions
- Parameters and return types are not ensured between versions
- API, besides minor fixes and adjustments, should be _almost_ v1. Changes should not be drastic.
#### Graduation Criteria
- an API can graduate from `v1beta` to `v1` if the API surface and datatypes are complete as identified by the team. The parameters and return types that are mandatory for each route are stable. All aspects of graduating from `v1alpha1` to `v1beta` apply as well.
- Optional parameters, routes, or parts of the return type can be added after graduating to `v1`
### v1 (stable)
- Considered stable
- Backwards compatible between Z-streams
- Y-stream breaking changes must go through the proper approval and announcement process.
- Datatypes for a route and its return types cannot change between Z-streams
- Y-stream datatype changes should be sparing, unless the changes are additional net-new parameters
- Must have proper conformance testing as outlined in https://github.com/llamastack/llama-stack/issues/3237
### v2+ (Major Versions)
Introducing a new major version like `/v2` is a significant and disruptive event that should be treated as a last resort. It is reserved for essential changes to a stable `/v1` API that are fundamentally backward-incompatible and cannot be implemented through additive, non-breaking changes or breaking changes across X/Y-Stream releases (x.y.z).
If a `/v2` version is deemed absolutely necessary, it must adhere to the following protocol to ensure a sane and predictable transition for users:
#### Lifecycle Progression
A new major version must follow the same stability lifecycle as `/v1`. It will be introduced as `/v2alpha`, mature to `/v2beta`, and finally become stable as `/v2`.
#### Coexistence:
The new `/v2` API must be introduced alongside the existing `/v1` API and run in parallel. It must not replace the `/v1` API immediately.
#### Deprecation Policy:
When a `/v2` API is introduced, a clear and generous deprecation policy for the `/v1` API must be published simultaneously. This policy must outline the timeline for the eventual removal of the `/v1` API, giving users ample time to migrate.
### API Stability vs. Provider Stability
The leveling introduced in this document relates to the stability of the API and not specifically the providers within the API.
Providers can iterate as much as they want on functionality as long as they work within the bounds of an API. If they need to change the API, then the API should not be `/v1`, or those breaking changes can only happen on a y-stream release basis.
### Approval and Announcement Process for Breaking Changes
- **PR Labeling**: Any pull request that introduces a breaking API change must be clearly labeled with `breaking-change`.
- **PR Title/Commit**: Any pull request that introduces a breaking API change must contain `BREAKING CHANGE` in the title and commit footer. Alternatively, the commit can include `!`, eg. `feat(api)!: title goes here` This is outlined in the [conventional commits documentation](https://www.conventionalcommits.org/en/v1.0.0/#specification)
- **Maintainer Review**: At least one maintainer must explicitly acknowledge the breaking change during review by applying the `breaking-change` label. An approval must come with this label or the acknowledgement this label has already been applied.
- **Announcement**: Breaking changes require inclusion in release notes and, if applicable, a separate communication (e.g., Discord, Github Issues, or GitHub Discussions) prior to release.
If a PR has proper approvals, labels, and commit/title hygiene, the failing API conformance tests will be bypassed.
## Enforcement
### Migration of API routes under `/v1alpha`, `/v1beta`, and `/v1`
Instead of placing every API under `/v1`, any API that is not fully stable or complete should go under `/v1alpha` or `/v1beta`. For example, at the time of this writing, `post_training` belongs here, as well as any OpenAI-compatible API whose surface does not exactly match the upstream OpenAI API it mimics.
This migration is crucial as we get Llama Stack in the hands of users who intend to productize various APIs. A clear view of what is stable and what is actively being developed will enable users to pick and choose various APIs to build their products on.
This migration will be a breaking change for any API moving out of `/v1`. Ideally, this should happen before 0.3.0 and especially 1.0.0.
### `x-stability` tags in the OpenAPI spec for oasdiff
`x-stability` tags allow tools like oasdiff to enforce different rules for different stability levels; these tags should match the routes: [oasdiff stability](https://github.com/oasdiff/oasdiff/blob/main/docs/STABILITY.md)
### Testing
The testing of each stable API is already outlined in [issue #3237](https://github.com/llamastack/llama-stack/issues/3237) and is being worked on. These sorts of conformance tests should apply primarily to `/v1` APIs only, with `/v1alpha` and `/v1beta` having any tests the maintainers see fit as well as basic testing to ensure the routing works properly.
### New APIs going forward
Any subsequently introduced APIs should be introduced as `/v1alpha`

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---
title: API Providers
description: Understanding remote vs inline provider implementations
sidebar_label: API Providers
sidebar_position: 2
---
# API Providers
The goal of Llama Stack is to build an ecosystem where users can easily swap out different implementations for the same API. Examples for these include:
- LLM inference providers (e.g., Fireworks, Together, AWS Bedrock, Groq, Cerebras, SambaNova, vLLM, etc.),
- Vector databases (e.g., ChromaDB, Weaviate, Qdrant, Milvus, FAISS, PGVector, etc.),
- Safety providers (e.g., Meta's Llama Guard, AWS Bedrock Guardrails, etc.)
Providers come in two flavors:
- **Remote**: the provider runs as a separate service external to the Llama Stack codebase. Llama Stack contains a small amount of adapter code.
- **Inline**: the provider is fully specified and implemented within the Llama Stack codebase. It may be a simple wrapper around an existing library, or a full fledged implementation within Llama Stack.
Most importantly, Llama Stack always strives to provide at least one fully inline provider for each API so you can iterate on a fully featured environment locally.

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---
title: External APIs
description: Understanding external APIs in Llama Stack
sidebar_label: External APIs
sidebar_position: 4
---
# External APIs
Llama Stack supports external APIs that live outside of the main codebase. This allows you to:
- Create and maintain your own APIs independently
- Share APIs with others without contributing to the main codebase
- Keep API-specific code separate from the core Llama Stack code
## Configuration
To enable external APIs, you need to configure the `external_apis_dir` in your Llama Stack configuration. This directory should contain your external API specifications:
```yaml
external_apis_dir: ~/.llama/apis.d/
```
## Directory Structure
The external APIs directory should follow this structure:
```
apis.d/
custom_api1.yaml
custom_api2.yaml
```
Each YAML file in these directories defines an API specification.
## API Specification
Here's an example of an external API specification for a weather API:
```yaml
module: weather
api_dependencies:
- inference
protocol: WeatherAPI
name: weather
pip_packages:
- llama-stack-api-weather
```
### API Specification Fields
- `module`: Python module containing the API implementation
- `protocol`: Name of the protocol class for the API
- `name`: Name of the API
- `pip_packages`: List of pip packages to install the API, typically a single package
## Required Implementation
External APIs must expose a `available_providers()` function in their module that returns a list of provider names:
```python
# llama_stack_api_weather/api.py
from llama_stack.providers.datatypes import Api, InlineProviderSpec, ProviderSpec
def available_providers() -> list[ProviderSpec]:
return [
InlineProviderSpec(
api=Api.weather,
provider_type="inline::darksky",
pip_packages=[],
module="llama_stack_provider_darksky",
config_class="llama_stack_provider_darksky.DarkSkyWeatherImplConfig",
),
]
```
A Protocol class like so:
```python
# llama_stack_api_weather/api.py
from typing import Protocol
from llama_stack.schema_utils import webmethod
class WeatherAPI(Protocol):
"""
A protocol for the Weather API.
"""
@webmethod(route="/locations", method="GET")
async def get_available_locations() -> dict[str, list[str]]:
"""
Get the available locations.
"""
...
```
## Example: Custom API
Here's a complete example of creating and using a custom API:
1. First, create the API package:
```bash
mkdir -p llama-stack-api-weather
cd llama-stack-api-weather
mkdir src/llama_stack_api_weather
git init
uv init
```
2. Edit `pyproject.toml`:
```toml
[project]
name = "llama-stack-api-weather"
version = "0.1.0"
description = "Weather API for Llama Stack"
readme = "README.md"
requires-python = ">=3.12"
dependencies = ["llama-stack", "pydantic"]
[build-system]
requires = ["setuptools"]
build-backend = "setuptools.build_meta"
[tool.setuptools.packages.find]
where = ["src"]
include = ["llama_stack_api_weather", "llama_stack_api_weather.*"]
```
3. Create the initial files:
```bash
touch src/llama_stack_api_weather/__init__.py
touch src/llama_stack_api_weather/api.py
```
```python
# llama-stack-api-weather/src/llama_stack_api_weather/__init__.py
"""Weather API for Llama Stack."""
from .api import WeatherAPI, available_providers
__all__ = ["WeatherAPI", "available_providers"]
```
4. Create the API implementation:
```python
# llama-stack-api-weather/src/llama_stack_api_weather/weather.py
from typing import Protocol
from llama_stack.providers.datatypes import (
AdapterSpec,
Api,
ProviderSpec,
RemoteProviderSpec,
)
from llama_stack.schema_utils import webmethod
def available_providers() -> list[ProviderSpec]:
return [
RemoteProviderSpec(
api=Api.weather,
provider_type="remote::kaze",
config_class="llama_stack_provider_kaze.KazeProviderConfig",
adapter=AdapterSpec(
adapter_type="kaze",
module="llama_stack_provider_kaze",
pip_packages=["llama_stack_provider_kaze"],
config_class="llama_stack_provider_kaze.KazeProviderConfig",
),
),
]
class WeatherProvider(Protocol):
"""
A protocol for the Weather API.
"""
@webmethod(route="/weather/locations", method="GET")
async def get_available_locations() -> dict[str, list[str]]:
"""
Get the available locations.
"""
...
```
5. Create the API specification:
```yaml
# ~/.llama/apis.d/weather.yaml
module: llama_stack_api_weather
name: weather
pip_packages: ["llama-stack-api-weather"]
protocol: WeatherProvider
```
6. Install the API package:
```bash
uv pip install -e .
```
7. Configure Llama Stack to use external APIs:
```yaml
version: "2"
image_name: "llama-stack-api-weather"
apis:
- weather
providers: {}
external_apis_dir: ~/.llama/apis.d
```
The API will now be available at `/v1/weather/locations`.
## Example: custom provider for the weather API
1. Create the provider package:
```bash
mkdir -p llama-stack-provider-kaze
cd llama-stack-provider-kaze
uv init
```
2. Edit `pyproject.toml`:
```toml
[project]
name = "llama-stack-provider-kaze"
version = "0.1.0"
description = "Kaze weather provider for Llama Stack"
readme = "README.md"
requires-python = ">=3.12"
dependencies = ["llama-stack", "pydantic", "aiohttp"]
[build-system]
requires = ["setuptools"]
build-backend = "setuptools.build_meta"
[tool.setuptools.packages.find]
where = ["src"]
include = ["llama_stack_provider_kaze", "llama_stack_provider_kaze.*"]
```
3. Create the initial files:
```bash
touch src/llama_stack_provider_kaze/__init__.py
touch src/llama_stack_provider_kaze/kaze.py
```
4. Create the provider implementation:
Initialization function:
```python
# llama-stack-provider-kaze/src/llama_stack_provider_kaze/__init__.py
"""Kaze weather provider for Llama Stack."""
from .config import KazeProviderConfig
from .kaze import WeatherKazeAdapter
__all__ = ["KazeProviderConfig", "WeatherKazeAdapter"]
async def get_adapter_impl(config: KazeProviderConfig, _deps):
from .kaze import WeatherKazeAdapter
impl = WeatherKazeAdapter(config)
await impl.initialize()
return impl
```
Configuration:
```python
# llama-stack-provider-kaze/src/llama_stack_provider_kaze/config.py
from pydantic import BaseModel, Field
class KazeProviderConfig(BaseModel):
"""Configuration for the Kaze weather provider."""
base_url: str = Field(
"https://api.kaze.io/v1",
description="Base URL for the Kaze weather API",
)
```
Main implementation:
```python
# llama-stack-provider-kaze/src/llama_stack_provider_kaze/kaze.py
from llama_stack_api_weather.api import WeatherProvider
from .config import KazeProviderConfig
class WeatherKazeAdapter(WeatherProvider):
"""Kaze weather provider implementation."""
def __init__(
self,
config: KazeProviderConfig,
) -> None:
self.config = config
async def initialize(self) -> None:
pass
async def get_available_locations(self) -> dict[str, list[str]]:
"""Get available weather locations."""
return {"locations": ["Paris", "Tokyo"]}
```
5. Create the provider specification:
```yaml
# ~/.llama/providers.d/remote/weather/kaze.yaml
adapter:
adapter_type: kaze
pip_packages: ["llama_stack_provider_kaze"]
config_class: llama_stack_provider_kaze.config.KazeProviderConfig
module: llama_stack_provider_kaze
optional_api_dependencies: []
```
6. Install the provider package:
```bash
uv pip install -e .
```
7. Configure Llama Stack to use the provider:
```yaml
# ~/.llama/run-byoa.yaml
version: "2"
image_name: "llama-stack-api-weather"
apis:
- weather
providers:
weather:
- provider_id: kaze
provider_type: remote::kaze
config: {}
external_apis_dir: ~/.llama/apis.d
external_providers_dir: ~/.llama/providers.d
server:
port: 8321
```
8. Run the server:
```bash
python -m llama_stack.core.server.server --yaml-config ~/.llama/run-byoa.yaml
```
9. Test the API:
```bash
curl -sSf http://127.0.0.1:8321/v1/weather/locations
{"locations":["Paris","Tokyo"]}%
```
## Best Practices
1. **Package Naming**: Use a clear and descriptive name for your API package.
2. **Version Management**: Keep your API package versioned and compatible with the Llama Stack version you're using.
3. **Dependencies**: Only include the minimum required dependencies in your API package.
4. **Documentation**: Include clear documentation in your API package about:
- Installation requirements
- Configuration options
- API endpoints and usage
- Any limitations or known issues
5. **Testing**: Include tests in your API package to ensure it works correctly with Llama Stack.
## Troubleshooting
If your external API isn't being loaded:
1. Check that the `external_apis_dir` path is correct and accessible.
2. Verify that the YAML files are properly formatted.
3. Ensure all required Python packages are installed.
4. Check the Llama Stack server logs for any error messages - turn on debug logging to get more information using `LLAMA_STACK_LOGGING=all=debug`.
5. Verify that the API package is installed in your Python environment.

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---
title: APIs
description: Available REST APIs and planned capabilities in Llama Stack
sidebar_label: APIs
sidebar_position: 1
---
# APIs
A Llama Stack API is described as a collection of REST endpoints. We currently support the following APIs:
- **Inference**: run inference with a LLM
- **Safety**: apply safety policies to the output at a Systems (not only model) level
- **Agents**: run multi-step agentic workflows with LLMs with tool usage, memory (RAG), etc.
- **DatasetIO**: interface with datasets and data loaders
- **Scoring**: evaluate outputs of the system
- **Eval**: generate outputs (via Inference or Agents) and perform scoring
- **VectorIO**: perform operations on vector stores, such as adding documents, searching, and deleting documents
- **Telemetry**: collect telemetry data from the system
- **Post Training**: fine-tune a model
- **Tool Runtime**: interact with various tools and protocols
- **Responses**: generate responses from an LLM using this OpenAI compatible API.
We are working on adding a few more APIs to complete the application lifecycle. These will include:
- **Batch Inference**: run inference on a dataset of inputs
- **Batch Agents**: run agents on a dataset of inputs
- **Synthetic Data Generation**: generate synthetic data for model development
- **Batches**: OpenAI-compatible batch management for inference

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---
title: Llama Stack Architecture
description: Understanding Llama Stack's service-oriented design and benefits
sidebar_label: Architecture
sidebar_position: 2
---
# Llama Stack architecture
Llama Stack allows you to build different layers of distributions for your AI workloads using various SDKs and API providers.
<img src="/img/llama-stack.png" alt="Llama Stack" width="400" />
## Benefits of Llama stack
### Current challenges in custom AI applications
Building production AI applications today requires solving multiple challenges:
**Infrastructure Complexity**
- Running large language models efficiently requires specialized infrastructure.
- Different deployment scenarios (local development, cloud, edge) need different solutions.
- Moving from development to production often requires significant rework.
**Essential Capabilities**
- Safety guardrails and content filtering are necessary in an enterprise setting.
- Just model inference is not enough - Knowledge retrieval and RAG capabilities are required.
- Nearly any application needs composable multi-step workflows.
- Without monitoring, observability and evaluation, you end up operating in the dark.
**Lack of Flexibility and Choice**
- Directly integrating with multiple providers creates tight coupling.
- Different providers have different APIs and abstractions.
- Changing providers requires significant code changes.
### Our Solution: A Universal Stack
Llama Stack addresses these challenges through a service-oriented, API-first approach:
**Develop Anywhere, Deploy Everywhere**
- Start locally with CPU-only setups
- Move to GPU acceleration when needed
- Deploy to cloud or edge without code changes
- Same APIs and developer experience everywhere
**Production-Ready Building Blocks**
- Pre-built safety guardrails and content filtering
- Built-in RAG and agent capabilities
- Comprehensive evaluation toolkit
- Full observability and monitoring
**True Provider Independence**
- Swap providers without application changes
- Mix and match best-in-class implementations
- Federation and fallback support
- No vendor lock-in
**Robust Ecosystem**
- Llama Stack is already integrated with distribution partners (cloud providers, hardware vendors, and AI-focused companies).
- Ecosystem offers tailored infrastructure, software, and services for deploying a variety of models.
## Our Philosophy
- **Service-Oriented**: REST APIs enforce clean interfaces and enable seamless transitions across different environments.
- **Composability**: Every component is independent but works together seamlessly
- **Production Ready**: Built for real-world applications, not just demos
- **Turnkey Solutions**: Easy to deploy built in solutions for popular deployment scenarios
With Llama Stack, you can focus on building your application while we handle the infrastructure complexity, essential capabilities, and provider integrations.

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---
title: Distributions
description: Pre-packaged provider configurations for different deployment scenarios
sidebar_label: Distributions
sidebar_position: 5
---
# Distributions
While there is a lot of flexibility to mix-and-match providers, often users will work with a specific set of providers (hardware support, contractual obligations, etc.) We therefore need to provide a _convenient shorthand_ for such collections. We call this shorthand a **Llama Stack Distribution** or a **Distro**. One can think of it as specific pre-packaged versions of the Llama Stack. Here are some examples:
**Remotely Hosted Distro**: These are the simplest to consume from a user perspective. You can simply obtain the API key for these providers, point to a URL and have _all_ Llama Stack APIs working out of the box. Currently, [Fireworks](https://fireworks.ai/) and [Together](https://together.xyz/) provide such easy-to-consume Llama Stack distributions.
**Locally Hosted Distro**: You may want to run Llama Stack on your own hardware. Typically though, you still need to use Inference via an external service. You can use providers like HuggingFace TGI, Fireworks, Together, etc. for this purpose. Or you may have access to GPUs and can run a [vLLM](https://github.com/vllm-project/vllm) or [NVIDIA NIM](https://build.nvidia.com/nim?filters=nimType%3Anim_type_run_anywhere&q=llama) instance. If you "just" have a regular desktop machine, you can use [Ollama](https://ollama.com/) for inference. To provide convenient quick access to these options, we provide a number of such pre-configured locally-hosted Distros.
**On-device Distro**: To run Llama Stack directly on an edge device (mobile phone or a tablet), we provide Distros for [iOS](/docs/distributions/ondevice_distro/ios_sdk) and [Android](/docs/distributions/ondevice_distro/android_sdk)

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# Core Concepts
Given Llama Stack's service-oriented philosophy, a few concepts and workflows arise which may not feel completely natural in the LLM landscape, especially if you are coming with a background in other frameworks.
## Documentation Structure
This section covers the fundamental concepts of Llama Stack:
- **[Architecture](./architecture.md)** - Learn about Llama Stack's architectural design and principles
- **[APIs](./apis/index.mdx)** - Understanding the core APIs and their stability levels
- [API Overview](./apis/index.mdx) - Core APIs available in Llama Stack
- [API Providers](./apis/api_providers.mdx) - How providers implement APIs
- [API Stability Leveling](./apis/api_leveling.mdx) - API stability and versioning
- **[Distributions](./distributions.md)** - Pre-configured deployment packages
- **[Resources](./resources.md)** - Understanding Llama Stack resources and their lifecycle
- **[External Integration](./external.md)** - Integrating with external services and providers
## Getting Started
If you're new to Llama Stack, we recommend starting with:
1. **[Architecture](./architecture.md)** - Understand the overall system design
2. **[APIs](./apis/index.mdx)** - Learn about the available APIs and their purpose
3. **[Distributions](./distributions.md)** - Choose a pre-configured setup for your use case
Each concept builds upon the previous ones to give you a comprehensive understanding of how Llama Stack works and how to use it effectively.---
title: Core Concepts
description: Understanding Llama Stack's service-oriented philosophy and key concepts
sidebar_label: Overview
sidebar_position: 1
---
# Core Concepts
Given Llama Stack's service-oriented philosophy, a few concepts and workflows arise which may not feel completely natural in the LLM landscape, especially if you are coming with a background in other frameworks.
This section covers the key concepts you need to understand to work effectively with Llama Stack:
- **[Architecture](./architecture)** - Llama Stack's service-oriented design and benefits
- **[APIs](./apis)** - Available REST APIs and planned capabilities
- **[API Providers](./api_providers)** - Remote vs inline provider implementations
- **[Distributions](./distributions)** - Pre-packaged provider configurations
- **[Resources](./resources)** - Resource federation and registration

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---
title: Resources
description: Resource federation and registration in Llama Stack
sidebar_label: Resources
sidebar_position: 6
---
# Resources
Some of these APIs are associated with a set of **Resources**. Here is the mapping of APIs to resources:
- **Inference**, **Eval** and **Post Training** are associated with `Model` resources.
- **Safety** is associated with `Shield` resources.
- **Tool Runtime** is associated with `ToolGroup` resources.
- **DatasetIO** is associated with `Dataset` resources.
- **VectorIO** is associated with `VectorDB` resources.
- **Scoring** is associated with `ScoringFunction` resources.
- **Eval** is associated with `Model` and `Benchmark` resources.
Furthermore, we allow these resources to be **federated** across multiple providers. For example, you may have some Llama models served by Fireworks while others are served by AWS Bedrock. Regardless, they will all work seamlessly with the same uniform Inference API provided by Llama Stack.
:::tip Registering Resources
Given this architecture, it is necessary for the Stack to know which provider to use for a given resource. This means you need to explicitly _register_ resources (including models) before you can use them with the associated APIs.
:::

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# Contributing to Llama Stack
We want to make contributing to this project as easy and transparent as
possible.
## Set up your development environment
We use [uv](https://github.com/astral-sh/uv) to manage python dependencies and virtual environments.
You can install `uv` by following this [guide](https://docs.astral.sh/uv/getting-started/installation/).
You can install the dependencies by running:
```bash
cd llama-stack
uv sync --group dev
uv pip install -e .
source .venv/bin/activate
```
```{note}
You can use a specific version of Python with `uv` by adding the `--python <version>` flag (e.g. `--python 3.12`).
Otherwise, `uv` will automatically select a Python version according to the `requires-python` section of the `pyproject.toml`.
For more info, see the [uv docs around Python versions](https://docs.astral.sh/uv/concepts/python-versions/).
```
Note that you can create a dotenv file `.env` that includes necessary environment variables:
```
LLAMA_STACK_BASE_URL=http://localhost:8321
LLAMA_STACK_CLIENT_LOG=debug
LLAMA_STACK_PORT=8321
LLAMA_STACK_CONFIG=<provider-name>
TAVILY_SEARCH_API_KEY=
BRAVE_SEARCH_API_KEY=
```
And then use this dotenv file when running client SDK tests via the following:
```bash
uv run --env-file .env -- pytest -v tests/integration/inference/test_text_inference.py --text-model=meta-llama/Llama-3.1-8B-Instruct
```
### Pre-commit Hooks
We use [pre-commit](https://pre-commit.com/) to run linting and formatting checks on your code. You can install the pre-commit hooks by running:
```bash
uv run pre-commit install
```
After that, pre-commit hooks will run automatically before each commit.
Alternatively, if you don't want to install the pre-commit hooks, you can run the checks manually by running:
```bash
uv run pre-commit run --all-files
```
```{caution}
Before pushing your changes, make sure that the pre-commit hooks have passed successfully.
```
## Discussions -> Issues -> Pull Requests
We actively welcome your pull requests. However, please read the following. This is heavily inspired by [Ghostty](https://github.com/ghostty-org/ghostty/blob/main/CONTRIBUTING.md).
If in doubt, please open a [discussion](https://github.com/meta-llama/llama-stack/discussions); we can always convert that to an issue later.
### Issues
We use GitHub issues to track public bugs. Please ensure your description is
clear and has sufficient instructions to be able to reproduce the issue.
Meta has a [bounty program](http://facebook.com/whitehat/info) for the safe
disclosure of security bugs. In those cases, please go through the process
outlined on that page and do not file a public issue.
### Contributor License Agreement ("CLA")
In order to accept your pull request, we need you to submit a CLA. You only need
to do this once to work on any of Meta's open source projects.
Complete your CLA here: <https://code.facebook.com/cla>
**I'd like to contribute!**
If you are new to the project, start by looking at the issues tagged with "good first issue". If you're interested
leave a comment on the issue and a triager will assign it to you.
Please avoid picking up too many issues at once. This helps you stay focused and ensures that others in the community also have opportunities to contribute.
- Try to work on only 12 issues at a time, especially if youre still getting familiar with the codebase.
- Before taking an issue, check if its already assigned or being actively discussed.
- If youre blocked or cant continue with an issue, feel free to unassign yourself or leave a comment so others can step in.
**I have a bug!**
1. Search the issue tracker and discussions for similar issues.
2. If you don't have steps to reproduce, open a discussion.
3. If you have steps to reproduce, open an issue.
**I have an idea for a feature!**
1. Open a discussion.
**I've implemented a feature!**
1. If there is an issue for the feature, open a pull request.
2. If there is no issue, open a discussion and link to your branch.
**I have a question!**
1. Open a discussion or use [Discord](https://discord.gg/llama-stack).
**Opening a Pull Request**
1. Fork the repo and create your branch from `main`.
2. If you've changed APIs, update the documentation.
3. Ensure the test suite passes.
4. Make sure your code lints using `pre-commit`.
5. If you haven't already, complete the Contributor License Agreement ("CLA").
6. Ensure your pull request follows the [conventional commits format](https://www.conventionalcommits.org/en/v1.0.0/).
7. Ensure your pull request follows the [coding style](#coding-style).
Please keep pull requests (PRs) small and focused. If you have a large set of changes, consider splitting them into logically grouped, smaller PRs to facilitate review and testing.
```{tip}
As a general guideline:
- Experienced contributors should try to keep no more than 5 open PRs at a time.
- New contributors are encouraged to have only one open PR at a time until theyre familiar with the codebase and process.
```
## Repository guidelines
### Coding Style
* Comments should provide meaningful insights into the code. Avoid filler comments that simply
describe the next step, as they create unnecessary clutter, same goes for docstrings.
* Prefer comments to clarify surprising behavior and/or relationships between parts of the code
rather than explain what the next line of code does.
* Catching exceptions, prefer using a specific exception type rather than a broad catch-all like
`Exception`.
* Error messages should be prefixed with "Failed to ..."
* 4 spaces for indentation rather than tab
* When using `# noqa` to suppress a style or linter warning, include a comment explaining the
justification for bypassing the check.
* When using `# type: ignore` to suppress a mypy warning, include a comment explaining the
justification for bypassing the check.
* Don't use unicode characters in the codebase. ASCII-only is preferred for compatibility or
readability reasons.
* Providers configuration class should be Pydantic Field class. It should have a `description` field
that describes the configuration. These descriptions will be used to generate the provider
documentation.
* When possible, use keyword arguments only when calling functions.
* Llama Stack utilizes [custom Exception classes](llama_stack/apis/common/errors.py) for certain Resources that should be used where applicable.
### License
By contributing to Llama, you agree that your contributions will be licensed
under the LICENSE file in the root directory of this source tree.
## Common Tasks
Some tips about common tasks you work on while contributing to Llama Stack:
### Using `llama stack build`
Building a stack image will use the production version of the `llama-stack` and `llama-stack-client` packages. If you are developing with a llama-stack repository checked out and need your code to be reflected in the stack image, set `LLAMA_STACK_DIR` and `LLAMA_STACK_CLIENT_DIR` to the appropriate checked out directories when running any of the `llama` CLI commands.
Example:
```bash
cd work/
git clone https://github.com/meta-llama/llama-stack.git
git clone https://github.com/meta-llama/llama-stack-client-python.git
cd llama-stack
LLAMA_STACK_DIR=$(pwd) LLAMA_STACK_CLIENT_DIR=../llama-stack-client-python llama stack build --distro <...>
```
### Updating distribution configurations
If you have made changes to a provider's configuration in any form (introducing a new config key, or
changing models, etc.), you should run `./scripts/distro_codegen.py` to re-generate various YAML
files as well as the documentation. You should not change `docs/source/.../distributions/` files
manually as they are auto-generated.
### Updating the provider documentation
If you have made changes to a provider's configuration, you should run `./scripts/provider_codegen.py`
to re-generate the documentation. You should not change `docs/source/.../providers/` files manually
as they are auto-generated.
Note that the provider "description" field will be used to generate the provider documentation.
### Building the Documentation
If you are making changes to the documentation at [https://llamastack.github.io/latest/](https://llamastack.github.io/latest/), you can use the following command to build the documentation and preview your changes. You will need [Sphinx](https://www.sphinx-doc.org/en/master/) and the readthedocs theme.
```bash
# This rebuilds the documentation pages.
uv run --group docs make -C docs/ html
# This will start a local server (usually at http://127.0.0.1:8000) that automatically rebuilds and refreshes when you make changes to the documentation.
uv run --group docs sphinx-autobuild docs/source docs/build/html --write-all
```
### Update API Documentation
If you modify or add new API endpoints, update the API documentation accordingly. You can do this by running the following command:
```bash
uv run ./docs/openapi_generator/run_openapi_generator.sh
```
The generated API documentation will be available in `docs/_static/`. Make sure to review the changes before committing.
## Adding a New Provider
See:
- [Adding a New API Provider Page](new_api_provider.md) which describes how to add new API providers to the Stack.
- [Vector Database Page](new_vector_database.md) which describes how to add a new vector databases with Llama Stack.
- [External Provider Page](../providers/external/index.md) which describes how to add external providers to the Stack.
```{toctree}
:maxdepth: 1
:hidden:
new_api_provider
new_vector_database
```
## Testing
```{include} ../../../tests/README.md
```
## Advanced Topics
For developers who need deeper understanding of the testing system internals:
```{toctree}
:maxdepth: 1
testing/record-replay
```
### Benchmarking
```{include} ../../../benchmarking/k8s-benchmark/README.md
```

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@ -0,0 +1,98 @@
---
title: Adding a New API Provider
description: Guide for adding new API providers to Llama Stack
sidebar_label: New API Provider
sidebar_position: 2
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
This guide will walk you through the process of adding a new API provider to Llama Stack.
- Begin by reviewing the [core concepts](../concepts/index.md) of Llama Stack and choose the API your provider belongs to (Inference, Safety, VectorIO, etc.)
- Determine the provider type ({repopath}`Remote::llama_stack/providers/remote` or {repopath}`Inline::llama_stack/providers/inline`). Remote providers make requests to external services, while inline providers execute implementation locally.
- Add your provider to the appropriate {repopath}`Registry::llama_stack/providers/registry/`. Specify pip dependencies necessary.
- Update any distribution {repopath}`Templates::llama_stack/distributions/` `build.yaml` and `run.yaml` files if they should include your provider by default. Run {repopath}`./scripts/distro_codegen.py` if necessary. Note that `distro_codegen.py` will fail if the new provider causes any distribution template to attempt to import provider-specific dependencies. This usually means the distribution's `get_distribution_template()` code path should only import any necessary Config or model alias definitions from each provider and not the provider's actual implementation.
Here are some example PRs to help you get started:
- [Grok Inference Implementation](https://github.com/meta-llama/llama-stack/pull/609)
- [Nvidia Inference Implementation](https://github.com/meta-llama/llama-stack/pull/355)
- [Model context protocol Tool Runtime](https://github.com/meta-llama/llama-stack/pull/665)
## Guidelines for creating Internal or External Providers
|**Type** |Internal (In-tree) |External (out-of-tree)
|---------|-------------------|---------------------|
|**Description** |A provider that is directly in the Llama Stack code|A provider that is outside of the Llama stack core codebase but is still accessible and usable by Llama Stack.
|**Benefits** |Ability to interact with the provider with minimal additional configurations or installations| Contributors do not have to add directly to the code to create providers accessible on Llama Stack. Keep provider-specific code separate from the core Llama Stack code.
## Inference Provider Patterns
When implementing Inference providers for OpenAI-compatible APIs, Llama Stack provides several mixin classes to simplify development and ensure consistent behavior across providers.
### OpenAIMixin
The `OpenAIMixin` class provides direct OpenAI API functionality for providers that work with OpenAI-compatible endpoints. It includes:
#### Direct API Methods
- **`openai_completion()`**: Legacy text completion API with full parameter support
- **`openai_chat_completion()`**: Chat completion API supporting streaming, tools, and function calling
- **`openai_embeddings()`**: Text embeddings generation with customizable encoding and dimensions
#### Model Management
- **`check_model_availability()`**: Queries the API endpoint to verify if a model exists and is accessible
#### Client Management
- **`client` property**: Automatically creates and configures AsyncOpenAI client instances using your provider's credentials
#### Required Implementation
To use `OpenAIMixin`, your provider must implement these abstract methods:
```python
@abstractmethod
def get_api_key(self) -> str:
"""Return the API key for authentication"""
pass
@abstractmethod
def get_base_url(self) -> str:
"""Return the OpenAI-compatible API base URL"""
pass
```
## Testing the Provider
Before running tests, you must have required dependencies installed. This depends on the providers or distributions you are testing. For example, if you are testing the `together` distribution, you should install dependencies via `llama stack build --distro together`.
### 1. Integration Testing
Integration tests are located in {repopath}`tests/integration`. These tests use the python client-SDK APIs (from the `llama_stack_client` package) to test functionality. Since these tests use client APIs, they can be run either by pointing to an instance of the Llama Stack server or "inline" by using `LlamaStackAsLibraryClient`.
Consult {repopath}`tests/integration/README.md` for more details on how to run the tests.
Note that each provider's `sample_run_config()` method (in the configuration class for that provider)
typically references some environment variables for specifying API keys and the like. You can set these in the environment or pass these via the `--env` flag to the test command.
### 2. Unit Testing
Unit tests are located in {repopath}`tests/unit`. Provider-specific unit tests are located in {repopath}`tests/unit/providers`. These tests are all run automatically as part of the CI process.
Consult {repopath}`tests/unit/README.md` for more details on how to run the tests manually.
### 3. Additional end-to-end testing
1. Start a Llama Stack server with your new provider
2. Verify compatibility with existing client scripts in the [llama-stack-apps](https://github.com/meta-llama/llama-stack-apps/tree/main) repository
3. Document which scripts are compatible with your provider
## Submitting Your PR
1. Ensure all tests pass
2. Include a comprehensive test plan in your PR summary
3. Document any known limitations or considerations

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---
title: Adding a New Vector Database
description: Guide for adding new vector database providers to Llama Stack
sidebar_label: New Vector Database
sidebar_position: 3
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
This guide will walk you through the process of adding a new vector database to Llama Stack.
> **_NOTE:_** Here's an example Pull Request of the [Milvus Vector Database Provider](https://github.com/meta-llama/llama-stack/pull/1467).
Vector Database providers are used to store and retrieve vector embeddings. Vector databases are not limited to vector
search but can support keyword and hybrid search. Additionally, vector database can also support operations like
filtering, sorting, and aggregating vectors.
## Steps to Add a New Vector Database Provider
1. **Choose the Database Type**: Determine if your vector database is a remote service, inline, or both.
- Remote databases make requests to external services, while inline databases execute locally. Some providers support both.
2. **Implement the Provider**: Create a new provider class that inherits from `VectorDatabaseProvider` and implements the required methods.
- Implement methods for vector storage, retrieval, search, and any additional features your database supports.
- You will need to implement the following methods for `YourVectorIndex`:
- `YourVectorIndex.create()`
- `YourVectorIndex.initialize()`
- `YourVectorIndex.add_chunks()`
- `YourVectorIndex.delete_chunk()`
- `YourVectorIndex.query_vector()`
- `YourVectorIndex.query_keyword()`
- `YourVectorIndex.query_hybrid()`
- You will need to implement the following methods for `YourVectorIOAdapter`:
- `YourVectorIOAdapter.initialize()`
- `YourVectorIOAdapter.shutdown()`
- `YourVectorIOAdapter.list_vector_dbs()`
- `YourVectorIOAdapter.register_vector_db()`
- `YourVectorIOAdapter.unregister_vector_db()`
- `YourVectorIOAdapter.insert_chunks()`
- `YourVectorIOAdapter.query_chunks()`
- `YourVectorIOAdapter.delete_chunks()`
3. **Add to Registry**: Register your provider in the appropriate registry file.
- Update {repopath}`llama_stack/providers/registry/vector_io.py` to include your new provider.
```python
from llama_stack.providers.registry.specs import InlineProviderSpec
from llama_stack.providers.registry.api import Api
InlineProviderSpec(
api=Api.vector_io,
provider_type="inline::milvus",
pip_packages=["pymilvus>=2.4.10"],
module="llama_stack.providers.inline.vector_io.milvus",
config_class="llama_stack.providers.inline.vector_io.milvus.MilvusVectorIOConfig",
api_dependencies=[Api.inference],
optional_api_dependencies=[Api.files],
description="",
),
```
4. **Add Tests**: Create unit tests and integration tests for your provider in the `tests/` directory.
- Unit Tests
- By following the structure of the class methods, you will be able to easily run unit and integration tests for your database.
1. You have to configure the tests for your provide in `/tests/unit/providers/vector_io/conftest.py`.
2. Update the `vector_provider` fixture to include your provider if they are an inline provider.
3. Create a `your_vectorprovider_index` fixture that initializes your vector index.
4. Create a `your_vectorprovider_adapter` fixture that initializes your vector adapter.
5. Add your provider to the `vector_io_providers` fixture dictionary.
- Please follow the naming convention of `your_vectorprovider_index` and `your_vectorprovider_adapter` as the tests require this to execute properly.
- Integration Tests
- Integration tests are located in {repopath}`tests/integration`. These tests use the python client-SDK APIs (from the `llama_stack_client` package) to test functionality.
- The two set of integration tests are:
- `tests/integration/vector_io/test_vector_io.py`: This file tests registration, insertion, and retrieval.
- `tests/integration/vector_io/test_openai_vector_stores.py`: These tests are for OpenAI-compatible vector stores and test the OpenAI API compatibility.
- You will need to update `skip_if_provider_doesnt_support_openai_vector_stores` to include your provider as well as `skip_if_provider_doesnt_support_openai_vector_stores_search` to test the appropriate search functionality.
- Running the tests in the GitHub CI
- You will need to update the `.github/workflows/integration-vector-io-tests.yml` file to include your provider.
- If your provider is a remote provider, you will also have to add a container to spin up and run it in the action.
- Updating the pyproject.yml
- If you are adding tests for the `inline` provider you will have to update the `unit` group.
- `uv add new_pip_package --group unit`
- If you are adding tests for the `remote` provider you will have to update the `test` group, which is used in the GitHub CI for integration tests.
- `uv add new_pip_package --group test`
5. **Update Documentation**: Please update the documentation for end users
- Generate the provider documentation by running {repopath}`./scripts/provider_codegen.py`.
- Update the autogenerated content in the registry/vector_io.py file with information about your provider. Please see other providers for examples.

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---
title: Record-Replay Testing System
description: Understanding how Llama Stack captures and replays API interactions for testing
sidebar_label: Record-Replay System
sidebar_position: 4
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Record-Replay System
Understanding how Llama Stack captures and replays API interactions for testing.
## Overview
The record-replay system solves a fundamental challenge in AI testing: how do you test against expensive, non-deterministic APIs without breaking the bank or dealing with flaky tests?
The solution: intercept API calls, store real responses, and replay them later. This gives you real API behavior without the cost or variability.
## How It Works
### Request Hashing
Every API request gets converted to a deterministic hash for lookup:
```python
def normalize_request(method: str, url: str, headers: dict, body: dict) -> str:
normalized = {
"method": method.upper(),
"endpoint": urlparse(url).path, # Just the path, not full URL
"body": body, # Request parameters
}
return hashlib.sha256(json.dumps(normalized, sort_keys=True).encode()).hexdigest()
```
**Key insight:** The hashing is intentionally precise. Different whitespace, float precision, or parameter order produces different hashes. This prevents subtle bugs from false cache hits.
```python
# These produce DIFFERENT hashes:
{"content": "Hello world"}
{"content": "Hello world\n"}
{"temperature": 0.7}
{"temperature": 0.7000001}
```
### Client Interception
The system patches OpenAI and Ollama client methods to intercept calls before they leave your application. This happens transparently - your test code doesn't change.
### Storage Architecture
Recordings are stored as JSON files in the recording directory. They are looked up by their request hash.
```
recordings/
└── responses/
├── abc123def456.json # Individual response files
└── def789ghi012.json
```
**JSON files** store complete request/response pairs in human-readable format for debugging.
## Recording Modes
### LIVE Mode
Direct API calls with no recording or replay:
```python
with inference_recording(mode=InferenceMode.LIVE):
response = await client.chat.completions.create(...)
```
Use for initial development and debugging against real APIs.
### RECORD Mode
Captures API interactions while passing through real responses:
```python
with inference_recording(mode=InferenceMode.RECORD, storage_dir="./recordings"):
response = await client.chat.completions.create(...)
# Real API call made, response captured AND returned
```
The recording process:
1. Request intercepted and hashed
2. Real API call executed
3. Response captured and serialized
4. Recording stored to disk
5. Original response returned to caller
### REPLAY Mode
Returns stored responses instead of making API calls:
```python
with inference_recording(mode=InferenceMode.REPLAY, storage_dir="./recordings"):
response = await client.chat.completions.create(...)
# No API call made, cached response returned instantly
```
The replay process:
1. Request intercepted and hashed
2. Hash looked up in SQLite index
3. Response loaded from JSON file
4. Response deserialized and returned
5. Error if no recording found
## Streaming Support
Streaming APIs present a unique challenge: how do you capture an async generator?
### The Problem
```python
# How do you record this?
async for chunk in client.chat.completions.create(stream=True):
process(chunk)
```
### The Solution
The system captures all chunks immediately before yielding any:
```python
async def handle_streaming_record(response):
# Capture complete stream first
chunks = []
async for chunk in response:
chunks.append(chunk)
# Store complete recording
storage.store_recording(
request_hash, request_data, {"body": chunks, "is_streaming": True}
)
# Return generator that replays captured chunks
async def replay_stream():
for chunk in chunks:
yield chunk
return replay_stream()
```
This ensures:
- **Complete capture** - The entire stream is saved atomically
- **Interface preservation** - The returned object behaves like the original API
- **Deterministic replay** - Same chunks in the same order every time
## Serialization
API responses contain complex Pydantic objects that need careful serialization:
```python
def _serialize_response(response):
if hasattr(response, "model_dump"):
# Preserve type information for proper deserialization
return {
"__type__": f"{response.__class__.__module__}.{response.__class__.__qualname__}",
"__data__": response.model_dump(mode="json"),
}
return response
```
This preserves type safety - when replayed, you get the same Pydantic objects with all their validation and methods.
## Environment Integration
### Environment Variables
Control recording behavior globally:
```bash
export LLAMA_STACK_TEST_INFERENCE_MODE=replay # this is the default
export LLAMA_STACK_TEST_RECORDING_DIR=/path/to/recordings # default is tests/integration/recordings
pytest tests/integration/
```
### Pytest Integration
The system integrates automatically based on environment variables, requiring no changes to test code.
## Debugging Recordings
### Inspecting Storage
```bash
# See what's recorded
sqlite3 recordings/index.sqlite "SELECT endpoint, model, timestamp FROM recordings LIMIT 10;"
# View specific response
cat recordings/responses/abc123def456.json | jq '.response.body'
# Find recordings by endpoint
sqlite3 recordings/index.sqlite "SELECT * FROM recordings WHERE endpoint='/v1/chat/completions';"
```
### Common Issues
**Hash mismatches:** Request parameters changed slightly between record and replay
```bash
# Compare request details
cat recordings/responses/abc123.json | jq '.request'
```
**Serialization errors:** Response types changed between versions
```bash
# Re-record with updated types
rm recordings/responses/failing_hash.json
LLAMA_STACK_TEST_INFERENCE_MODE=record pytest test_failing.py
```
**Missing recordings:** New test or changed parameters
```bash
# Record the missing interaction
LLAMA_STACK_TEST_INFERENCE_MODE=record pytest test_new.py
```
## Design Decisions
### Why Not Mocks?
Traditional mocking breaks down with AI APIs because:
- Response structures are complex and evolve frequently
- Streaming behavior is hard to mock correctly
- Edge cases in real APIs get missed
- Mocks become brittle maintenance burdens
### Why Precise Hashing?
Loose hashing (normalizing whitespace, rounding floats) seems convenient but hides bugs. If a test changes slightly, you want to know about it rather than accidentally getting the wrong cached response.
### Why JSON + SQLite?
- **JSON** - Human readable, diff-friendly, easy to inspect and modify
- **SQLite** - Fast indexed lookups without loading response bodies
- **Hybrid** - Best of both worlds for different use cases
This system provides reliable, fast testing against real AI APIs while maintaining the ability to debug issues when they arise.

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---
title: AWS EKS Deployment Guide
description: Deploy Llama Stack on AWS EKS
sidebar_label: AWS EKS Deployment
sidebar_position: 3
---
## AWS EKS Deployment
### Prerequisites
- Set up an [EKS cluster](https://docs.aws.amazon.com/eks/latest/userguide/getting-started.html)
- Create a [GitHub OAuth app](https://docs.github.com/en/apps/oauth-apps/building-oauth-apps/creating-an-oauth-app)
- Set authorization callback URL to `http://<your-llama-stack-ui-url>/api/auth/callback/`
### Automated Deployment
```bash
export HF_TOKEN=<your-huggingface-token>
export GITHUB_CLIENT_ID=<your-github-client-id>
export GITHUB_CLIENT_SECRET=<your-github-client-secret>
export LLAMA_STACK_UI_URL=<your-llama-stack-ui-url>
cd docs/source/distributions/eks
./apply.sh
```
This script will:
- Set up default storage class for AWS EKS
- Deploy Llama Stack server in Kubernetes pods and services

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@ -0,0 +1,14 @@
---
title: Deploying Llama Stack
description: Production deployment guides for Llama Stack in various environments
sidebar_label: Overview
sidebar_position: 1
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Deploying Llama Stack
[**→ Kubernetes Deployment Guide**](./kubernetes_deployment.mdx)
[**→ AWS EKS Deployment Guide**](./aws_eks_deployment.mdx)

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@ -0,0 +1,224 @@
---
title: Kubernetes Deployment Guide
description: Deploy Llama Stack on Kubernetes clusters with vLLM inference service
sidebar_label: Kubernetes
sidebar_position: 2
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
# Kubernetes Deployment Guide
Deploy Llama Stack and vLLM servers in a Kubernetes cluster instead of running them locally. This guide covers both local development with Kind and production deployment on AWS EKS.
## Prerequisites
### Local Kubernetes Setup
Create a local Kubernetes cluster via Kind:
```bash
kind create cluster --image kindest/node:v1.32.0 --name llama-stack-test
```
Set your Hugging Face token:
```bash
export HF_TOKEN=$(echo -n "your-hf-token" | base64)
```
## Quick Deployment
### Step 1: Create Storage and Secrets
```yaml
cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: vllm-models
spec:
accessModes:
- ReadWriteOnce
volumeMode: Filesystem
resources:
requests:
storage: 50Gi
---
apiVersion: v1
kind: Secret
metadata:
name: hf-token-secret
type: Opaque
data:
token: $HF_TOKEN
EOF
```
### Step 2: Deploy vLLM Server
```yaml
cat <<EOF | kubectl apply -f -
apiVersion: apps/v1
kind: Deployment
metadata:
name: vllm-server
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: vllm
template:
metadata:
labels:
app.kubernetes.io/name: vllm
spec:
containers:
- name: vllm
image: vllm/vllm-openai:latest
command: ["/bin/sh", "-c"]
args: ["vllm serve meta-llama/Llama-3.2-1B-Instruct"]
env:
- name: HUGGING_FACE_HUB_TOKEN
valueFrom:
secretKeyRef:
name: hf-token-secret
key: token
ports:
- containerPort: 8000
volumeMounts:
- name: llama-storage
mountPath: /root/.cache/huggingface
volumes:
- name: llama-storage
persistentVolumeClaim:
claimName: vllm-models
---
apiVersion: v1
kind: Service
metadata:
name: vllm-server
spec:
selector:
app.kubernetes.io/name: vllm
ports:
- protocol: TCP
port: 8000
targetPort: 8000
type: ClusterIP
EOF
```
### Step 3: Configure Llama Stack
Update your run configuration:
```yaml
providers:
inference:
- provider_id: vllm
provider_type: remote::vllm
config:
url: http://vllm-server.default.svc.cluster.local:8000/v1
max_tokens: 4096
api_token: fake
```
Build container image:
```bash
tmp_dir=$(mktemp -d) && cat >$tmp_dir/Containerfile.llama-stack-run-k8s <<EOF
FROM distribution-myenv:dev
RUN apt-get update && apt-get install -y git
RUN git clone https://github.com/meta-llama/llama-stack.git /app/llama-stack-source
ADD ./vllm-llama-stack-run-k8s.yaml /app/config.yaml
EOF
podman build -f $tmp_dir/Containerfile.llama-stack-run-k8s -t llama-stack-run-k8s $tmp_dir
```
### Step 4: Deploy Llama Stack Server
```yaml
cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: llama-pvc
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: llama-stack-server
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: llama-stack
template:
metadata:
labels:
app.kubernetes.io/name: llama-stack
spec:
containers:
- name: llama-stack
image: localhost/llama-stack-run-k8s:latest
imagePullPolicy: IfNotPresent
command: ["python", "-m", "llama_stack.core.server.server", "--config", "/app/config.yaml"]
ports:
- containerPort: 5000
volumeMounts:
- name: llama-storage
mountPath: /root/.llama
volumes:
- name: llama-storage
persistentVolumeClaim:
claimName: llama-pvc
---
apiVersion: v1
kind: Service
metadata:
name: llama-stack-service
spec:
selector:
app.kubernetes.io/name: llama-stack
ports:
- protocol: TCP
port: 5000
targetPort: 5000
type: ClusterIP
EOF
```
### Step 5: Test Deployment
```bash
# Port forward and test
kubectl port-forward service/llama-stack-service 5000:5000
llama-stack-client --endpoint http://localhost:5000 inference chat-completion --message "hello, what model are you?"
```
## Troubleshooting
**Check pod status:**
```bash
kubectl get pods -l app.kubernetes.io/name=vllm
kubectl logs -l app.kubernetes.io/name=vllm
```
**Test service connectivity:**
```bash
kubectl run -it --rm debug --image=curlimages/curl --restart=Never -- curl http://vllm-server:8000/v1/models
```
## Related Resources
- **[Deployment Overview](./index)** - Overview of deployment options
- **[Distributions](/docs/distributions)** - Understanding Llama Stack distributions
- **[Configuration](/docs/distributions/configuration)** - Detailed configuration options

View file

@ -0,0 +1,447 @@
---
title: Building Custom Distributions
description: Building a Llama Stack distribution from scratch
sidebar_label: Build your own Distribution
sidebar_position: 3
---
This guide will walk you through the steps to get started with building a Llama Stack distribution from scratch with your choice of API providers.
### Setting your log level
In order to specify the proper logging level users can apply the following environment variable `LLAMA_STACK_LOGGING` with the following format:
`LLAMA_STACK_LOGGING=server=debug;core=info`
Where each category in the following list:
- all
- core
- server
- router
- inference
- agents
- safety
- eval
- tools
- client
Can be set to any of the following log levels:
- debug
- info
- warning
- error
- critical
The default global log level is `info`. `all` sets the log level for all components.
A user can also set `LLAMA_STACK_LOG_FILE` which will pipe the logs to the specified path as well as to the terminal. An example would be: `export LLAMA_STACK_LOG_FILE=server.log`
### Llama Stack Build
In order to build your own distribution, we recommend you clone the `llama-stack` repository.
```
git clone git@github.com:meta-llama/llama-stack.git
cd llama-stack
pip install -e .
```
Use the CLI to build your distribution.
The main points to consider are:
1. **Image Type** - Do you want a venv environment or a Container (eg. Docker)
2. **Template** - Do you want to use a template to build your distribution? or start from scratch ?
3. **Config** - Do you want to use a pre-existing config file to build your distribution?
```
llama stack build -h
usage: llama stack build [-h] [--config CONFIG] [--template TEMPLATE] [--distro DISTRIBUTION] [--list-distros] [--image-type {container,venv}] [--image-name IMAGE_NAME] [--print-deps-only]
[--run] [--providers PROVIDERS]
Build a Llama stack container
options:
-h, --help show this help message and exit
--config CONFIG Path to a config file to use for the build. You can find example configs in llama_stack.cores/**/build.yaml. If this argument is not provided, you will be prompted to
enter information interactively (default: None)
--template TEMPLATE (deprecated) Name of the example template config to use for build. You may use `llama stack build --list-distros` to check out the available distributions (default:
None)
--distro DISTRIBUTION, --distribution DISTRIBUTION
Name of the distribution to use for build. You may use `llama stack build --list-distros` to check out the available distributions (default: None)
--list-distros, --list-distributions
Show the available distributions for building a Llama Stack distribution (default: False)
--image-type {container,venv}
Image Type to use for the build. If not specified, will use the image type from the template config. (default: None)
--image-name IMAGE_NAME
[for image-type=container|venv] Name of the virtual environment to use for the build. If not specified, currently active environment will be used if found. (default:
None)
--print-deps-only Print the dependencies for the stack only, without building the stack (default: False)
--run Run the stack after building using the same image type, name, and other applicable arguments (default: False)
--providers PROVIDERS
Build a config for a list of providers and only those providers. This list is formatted like: api1=provider1,api2=provider2. Where there can be multiple providers per
API. (default: None)
```
After this step is complete, a file named `<name>-build.yaml` and template file `<name>-run.yaml` will be generated and saved at the output file path specified at the end of the command.
::::{tab-set}
:::{tab-item} Building from a template
To build from alternative API providers, we provide distribution templates for users to get started building a distribution backed by different providers.
The following command will allow you to see the available templates and their corresponding providers.
```
llama stack build --list-templates
```
```
------------------------------+-----------------------------------------------------------------------------+
| Template Name | Description |
+------------------------------+-----------------------------------------------------------------------------+
| watsonx | Use watsonx for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| vllm-gpu | Use a built-in vLLM engine for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| together | Use Together.AI for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| tgi | Use (an external) TGI server for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| starter | Quick start template for running Llama Stack with several popular providers |
+------------------------------+-----------------------------------------------------------------------------+
| sambanova | Use SambaNova for running LLM inference and safety |
+------------------------------+-----------------------------------------------------------------------------+
| remote-vllm | Use (an external) vLLM server for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| postgres-demo | Quick start template for running Llama Stack with several popular providers |
+------------------------------+-----------------------------------------------------------------------------+
| passthrough | Use Passthrough hosted llama-stack endpoint for LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| open-benchmark | Distribution for running open benchmarks |
+------------------------------+-----------------------------------------------------------------------------+
| ollama | Use (an external) Ollama server for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| nvidia | Use NVIDIA NIM for running LLM inference, evaluation and safety |
+------------------------------+-----------------------------------------------------------------------------+
| meta-reference-gpu | Use Meta Reference for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| llama_api | Distribution for running e2e tests in CI |
+------------------------------+-----------------------------------------------------------------------------+
| hf-serverless | Use (an external) Hugging Face Inference Endpoint for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| hf-endpoint | Use (an external) Hugging Face Inference Endpoint for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| groq | Use Groq for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| fireworks | Use Fireworks.AI for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| experimental-post-training | Experimental template for post training |
+------------------------------+-----------------------------------------------------------------------------+
| dell | Dell's distribution of Llama Stack. TGI inference via Dell's custom |
| | container |
+------------------------------+-----------------------------------------------------------------------------+
| ci-tests | Distribution for running e2e tests in CI |
+------------------------------+-----------------------------------------------------------------------------+
| cerebras | Use Cerebras for running LLM inference |
+------------------------------+-----------------------------------------------------------------------------+
| bedrock | Use AWS Bedrock for running LLM inference and safety |
+------------------------------+-----------------------------------------------------------------------------+
```
You may then pick a template to build your distribution with providers fitted to your liking.
For example, to build a distribution with TGI as the inference provider, you can run:
```
$ llama stack build --distro starter
...
You can now edit ~/.llama/distributions/llamastack-starter/starter-run.yaml and run `llama stack run ~/.llama/distributions/llamastack-starter/starter-run.yaml`
```
```{tip}
The generated `run.yaml` file is a starting point for your configuration. For comprehensive guidance on customizing it for your specific needs, infrastructure, and deployment scenarios, see [Customizing Your run.yaml Configuration](customizing_run_yaml.md).
```
:::
:::{tab-item} Building from Scratch
If the provided templates do not fit your use case, you could start off with running `llama stack build` which will allow you to a interactively enter wizard where you will be prompted to enter build configurations.
It would be best to start with a template and understand the structure of the config file and the various concepts ( APIS, providers, resources, etc.) before starting from scratch.
```
llama stack build
> Enter a name for your Llama Stack (e.g. my-local-stack): my-stack
> Enter the image type you want your Llama Stack to be built as (container or venv): venv
Llama Stack is composed of several APIs working together. Let's select
the provider types (implementations) you want to use for these APIs.
Tip: use <TAB> to see options for the providers.
> Enter provider for API inference: inline::meta-reference
> Enter provider for API safety: inline::llama-guard
> Enter provider for API agents: inline::meta-reference
> Enter provider for API memory: inline::faiss
> Enter provider for API datasetio: inline::meta-reference
> Enter provider for API scoring: inline::meta-reference
> Enter provider for API eval: inline::meta-reference
> Enter provider for API telemetry: inline::meta-reference
> (Optional) Enter a short description for your Llama Stack:
You can now edit ~/.llama/distributions/llamastack-my-local-stack/my-local-stack-run.yaml and run `llama stack run ~/.llama/distributions/llamastack-my-local-stack/my-local-stack-run.yaml`
```
:::
:::{tab-item} Building from a pre-existing build config file
- In addition to templates, you may customize the build to your liking through editing config files and build from config files with the following command.
- The config file will be of contents like the ones in `llama_stack/distributions/*build.yaml`.
```
llama stack build --config llama_stack/distributions/starter/build.yaml
```
:::
:::{tab-item} Building with External Providers
Llama Stack supports external providers that live outside of the main codebase. This allows you to create and maintain your own providers independently or use community-provided providers.
To build a distribution with external providers, you need to:
1. Configure the `external_providers_dir` in your build configuration file:
```yaml
# Example my-external-stack.yaml with external providers
version: '2'
distribution_spec:
description: Custom distro for CI tests
providers:
inference:
- remote::custom_ollama
# Add more providers as needed
image_type: container
image_name: ci-test
# Path to external provider implementations
external_providers_dir: ~/.llama/providers.d
```
Here's an example for a custom Ollama provider:
```yaml
adapter:
adapter_type: custom_ollama
pip_packages:
- ollama
- aiohttp
- llama-stack-provider-ollama # This is the provider package
config_class: llama_stack_ollama_provider.config.OllamaImplConfig
module: llama_stack_ollama_provider
api_dependencies: []
optional_api_dependencies: []
```
The `pip_packages` section lists the Python packages required by the provider, as well as the
provider package itself. The package must be available on PyPI or can be provided from a local
directory or a git repository (git must be installed on the build environment).
2. Build your distribution using the config file:
```
llama stack build --config my-external-stack.yaml
```
For more information on external providers, including directory structure, provider types, and implementation requirements, see the [External Providers documentation](../providers/external.md).
:::
:::{tab-item} Building Container
```{admonition} Podman Alternative
:class: tip
Podman is supported as an alternative to Docker. Set `CONTAINER_BINARY` to `podman` in your environment to use Podman.
```
To build a container image, you may start off from a template and use the `--image-type container` flag to specify `container` as the build image type.
```
llama stack build --distro starter --image-type container
```
```
$ llama stack build --distro starter --image-type container
...
Containerfile created successfully in /tmp/tmp.viA3a3Rdsg/ContainerfileFROM python:3.10-slim
...
```
You can now edit ~/meta-llama/llama-stack/tmp/configs/ollama-run.yaml and run `llama stack run ~/meta-llama/llama-stack/tmp/configs/ollama-run.yaml`
```
Now set some environment variables for the inference model ID and Llama Stack Port and create a local directory to mount into the container's file system.
```
export INFERENCE_MODEL="llama3.2:3b"
export LLAMA_STACK_PORT=8321
mkdir -p ~/.llama
```
After this step is successful, you should be able to find the built container image and test it with the below Docker command:
```
docker run -d \
-p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
-v ~/.llama:/root/.llama \
localhost/distribution-ollama:dev \
--port $LLAMA_STACK_PORT \
--env INFERENCE_MODEL=$INFERENCE_MODEL \
--env OLLAMA_URL=http://host.docker.internal:11434
```
Here are the docker flags and their uses:
* `-d`: Runs the container in the detached mode as a background process
* `-p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT`: Maps the container port to the host port for accessing the server
* `-v ~/.llama:/root/.llama`: Mounts the local .llama directory to persist configurations and data
* `localhost/distribution-ollama:dev`: The name and tag of the container image to run
* `--port $LLAMA_STACK_PORT`: Port number for the server to listen on
* `--env INFERENCE_MODEL=$INFERENCE_MODEL`: Sets the model to use for inference
* `--env OLLAMA_URL=http://host.docker.internal:11434`: Configures the URL for the Ollama service
:::
::::
### Running your Stack server
Now, let's start the Llama Stack Distribution Server. You will need the YAML configuration file which was written out at the end by the `llama stack build` step.
```
llama stack run -h
usage: llama stack run [-h] [--port PORT] [--image-name IMAGE_NAME] [--env KEY=VALUE]
[--image-type {venv}] [--enable-ui]
[config | template]
Start the server for a Llama Stack Distribution. You should have already built (or downloaded) and configured the distribution.
positional arguments:
config | template Path to config file to use for the run or name of known template (`llama stack list` for a list). (default: None)
options:
-h, --help show this help message and exit
--port PORT Port to run the server on. It can also be passed via the env var LLAMA_STACK_PORT. (default: 8321)
--image-name IMAGE_NAME
Name of the image to run. Defaults to the current environment (default: None)
--env KEY=VALUE Environment variables to pass to the server in KEY=VALUE format. Can be specified multiple times. (default: None)
--image-type {venv}
Image Type used during the build. This should be venv. (default: None)
--enable-ui Start the UI server (default: False)
```
**Note:** Container images built with `llama stack build --image-type container` cannot be run using `llama stack run`. Instead, they must be run directly using Docker or Podman commands as shown in the container building section above.
```
# Start using template name
llama stack run tgi
# Start using config file
llama stack run ~/.llama/distributions/llamastack-my-local-stack/my-local-stack-run.yaml
# Start using a venv
llama stack run --image-type venv ~/.llama/distributions/llamastack-my-local-stack/my-local-stack-run.yaml
```
```
$ llama stack run ~/.llama/distributions/llamastack-my-local-stack/my-local-stack-run.yaml
Serving API inspect
GET /health
GET /providers/list
GET /routes/list
Serving API inference
POST /inference/chat_completion
POST /inference/completion
POST /inference/embeddings
...
Serving API agents
POST /agents/create
POST /agents/session/create
POST /agents/turn/create
POST /agents/delete
POST /agents/session/delete
POST /agents/session/get
POST /agents/step/get
POST /agents/turn/get
Listening on ['::', '0.0.0.0']:8321
INFO: Started server process [2935911]
INFO: Waiting for application startup.
INFO: Application startup complete.
INFO: Uvicorn running on http://['::', '0.0.0.0']:8321 (Press CTRL+C to quit)
INFO: 2401:db00:35c:2d2b:face:0:c9:0:54678 - "GET /models/list HTTP/1.1" 200 OK
```
### Listing Distributions
Using the list command, you can view all existing Llama Stack distributions, including stacks built from templates, from scratch, or using custom configuration files.
```
llama stack list -h
usage: llama stack list [-h]
list the build stacks
options:
-h, --help show this help message and exit
```
Example Usage
```
llama stack list
```
```
------------------------------+-----------------------------------------------------------------+--------------+------------+
| Stack Name | Path | Build Config | Run Config |
+------------------------------+-----------------------------------------------------------------------------+--------------+
| together | ~/.llama/distributions/together | Yes | No |
+------------------------------+-----------------------------------------------------------------------------+--------------+
| bedrock | ~/.llama/distributions/bedrock | Yes | No |
+------------------------------+-----------------------------------------------------------------------------+--------------+
| starter | ~/.llama/distributions/starter | Yes | Yes |
+------------------------------+-----------------------------------------------------------------------------+--------------+
| remote-vllm | ~/.llama/distributions/remote-vllm | Yes | Yes |
+------------------------------+-----------------------------------------------------------------------------+--------------+
```
### Removing a Distribution
Use the remove command to delete a distribution you've previously built.
```
llama stack rm -h
usage: llama stack rm [-h] [--all] [name]
Remove the build stack
positional arguments:
name Name of the stack to delete (default: None)
options:
-h, --help show this help message and exit
--all, -a Delete all stacks (use with caution) (default: False)
```
Example
```
llama stack rm llamastack-test
```
To keep your environment organized and avoid clutter, consider using `llama stack list` to review old or unused distributions and `llama stack rm <name>` to delete them when they're no longer needed.
### Troubleshooting
If you encounter any issues, ask questions in our discord or search through our [GitHub Issues](https://github.com/meta-llama/llama-stack/issues), or file an new issue.

View file

@ -0,0 +1,808 @@
---
title: Configuring a "Stack"
description: Configuring a "Stack"
sidebar_label: Configuring a "Stack"
sidebar_position: 6
---
# Configuring a "Stack"
The Llama Stack runtime configuration is specified as a YAML file. Here is a simplified version of an example configuration file for the Ollama distribution:
```{note}
The default `run.yaml` files generated by templates are starting points for your configuration. For guidance on customizing these files for your specific needs, see [Customizing Your run.yaml Configuration](customizing_run_yaml.md).
```
```{dropdown} 👋 Click here for a Sample Configuration File
```yaml
version: 2
apis:
- agents
- inference
- vector_io
- safety
- telemetry
providers:
inference:
- provider_id: ollama
provider_type: remote::ollama
config:
url: ${env.OLLAMA_URL:=http://localhost:11434}
vector_io:
- provider_id: faiss
provider_type: inline::faiss
config:
kvstore:
type: sqlite
namespace: null
db_path: ${env.SQLITE_STORE_DIR:=~/.llama/distributions/ollama}/faiss_store.db
safety:
- provider_id: llama-guard
provider_type: inline::llama-guard
config: {}
agents:
- provider_id: meta-reference
provider_type: inline::meta-reference
config:
persistence_store:
type: sqlite
namespace: null
db_path: ${env.SQLITE_STORE_DIR:=~/.llama/distributions/ollama}/agents_store.db
telemetry:
- provider_id: meta-reference
provider_type: inline::meta-reference
config: {}
metadata_store:
namespace: null
type: sqlite
db_path: ${env.SQLITE_STORE_DIR:=~/.llama/distributions/ollama}/registry.db
models:
- metadata: {}
model_id: ${env.INFERENCE_MODEL}
provider_id: ollama
provider_model_id: null
shields: []
server:
port: 8321
auth:
provider_config:
type: "oauth2_token"
jwks:
uri: "https://my-token-issuing-svc.com/jwks"
```
Let's break this down into the different sections. The first section specifies the set of APIs that the stack server will serve:
```yaml
apis:
- agents
- inference
- vector_io
- safety
- telemetry
```
## Providers
Next up is the most critical part: the set of providers that the stack will use to serve the above APIs. Consider the `inference` API:
```yaml
providers:
inference:
# provider_id is a string you can choose freely
- provider_id: ollama
# provider_type is a string that specifies the type of provider.
# in this case, the provider for inference is ollama and it runs remotely (outside of the distribution)
provider_type: remote::ollama
# config is a dictionary that contains the configuration for the provider.
# in this case, the configuration is the url of the ollama server
config:
url: ${env.OLLAMA_URL:=http://localhost:11434}
```
A few things to note:
- A _provider instance_ is identified with an (id, type, config) triplet.
- The id is a string you can choose freely.
- You can instantiate any number of provider instances of the same type.
- The configuration dictionary is provider-specific.
- Notice that configuration can reference environment variables (with default values), which are expanded at runtime. When you run a stack server (via docker or via `llama stack run`), you can specify `--env OLLAMA_URL=http://my-server:11434` to override the default value.
### Environment Variable Substitution
Llama Stack supports environment variable substitution in configuration values using the
`${env.VARIABLE_NAME}` syntax. This allows you to externalize configuration values and provide
different settings for different environments. The syntax is inspired by [bash parameter expansion](https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html)
and follows similar patterns.
#### Basic Syntax
The basic syntax for environment variable substitution is:
```yaml
config:
api_key: ${env.API_KEY}
url: ${env.SERVICE_URL}
```
If the environment variable is not set, the server will raise an error during startup.
#### Default Values
You can provide default values using the `:=` operator:
```yaml
config:
url: ${env.OLLAMA_URL:=http://localhost:11434}
port: ${env.PORT:=8321}
timeout: ${env.TIMEOUT:=60}
```
If the environment variable is not set, the default value `http://localhost:11434` will be used.
Empty defaults are allowed so `url: ${env.OLLAMA_URL:=}` will be set to `None` if the environment variable is not set.
#### Conditional Values
You can use the `:+` operator to provide a value only when the environment variable is set:
```yaml
config:
# Only include this field if ENVIRONMENT is set
environment: ${env.ENVIRONMENT:+production}
```
If the environment variable is set, the value after `:+` will be used. If it's not set, the field
will be omitted with a `None` value.
Do not use conditional values (`${env.OLLAMA_URL:+}`) for empty defaults (`${env.OLLAMA_URL:=}`).
This will be set to `None` if the environment variable is not set.
Conditional must only be used when the environment variable is set.
#### Examples
Here are some common patterns:
```yaml
# Required environment variable (will error if not set)
api_key: ${env.OPENAI_API_KEY}
# Optional with default
base_url: ${env.API_BASE_URL:=https://api.openai.com/v1}
# Conditional field
debug_mode: ${env.DEBUG:+true}
# Optional field that becomes None if not set
optional_token: ${env.OPTIONAL_TOKEN:+}
```
#### Runtime Override
You can override environment variables at runtime when starting the server:
```bash
# Override specific environment variables
llama stack run --config run.yaml --env API_KEY=sk-123 --env BASE_URL=https://custom-api.com
# Or set them in your shell
export API_KEY=sk-123
export BASE_URL=https://custom-api.com
llama stack run --config run.yaml
```
#### Type Safety
The environment variable substitution system is type-safe:
- String values remain strings
- Empty defaults (`${env.VAR:+}`) are converted to `None` for fields that accept `str | None`
- Numeric defaults are properly typed (e.g., `${env.PORT:=8321}` becomes an integer)
- Boolean defaults work correctly (e.g., `${env.DEBUG:=false}` becomes a boolean)
## Resources
Let's look at the `models` section:
```yaml
models:
- metadata: {}
model_id: ${env.INFERENCE_MODEL}
provider_id: ollama
provider_model_id: null
model_type: llm
```
A Model is an instance of a "Resource" (see [Concepts](../concepts/index)) and is associated with a specific inference provider (in this case, the provider with identifier `ollama`). This is an instance of a "pre-registered" model. While we always encourage the clients to register models before using them, some Stack servers may come up a list of "already known and available" models.
What's with the `provider_model_id` field? This is an identifier for the model inside the provider's model catalog. Contrast it with `model_id` which is the identifier for the same model for Llama Stack's purposes. For example, you may want to name "llama3.2:vision-11b" as "image_captioning_model" when you use it in your Stack interactions. When omitted, the server will set `provider_model_id` to be the same as `model_id`.
If you need to conditionally register a model in the configuration, such as only when specific environment variable(s) are set, this can be accomplished by utilizing a special `__disabled__` string as the default value of an environment variable substitution, as shown below:
```yaml
models:
- metadata: {}
model_id: ${env.INFERENCE_MODEL:__disabled__}
provider_id: ollama
provider_model_id: ${env.INFERENCE_MODEL:__disabled__}
```
The snippet above will only register this model if the environment variable `INFERENCE_MODEL` is set and non-empty. If the environment variable is not set, the model will not get registered at all.
## Server Configuration
The `server` section configures the HTTP server that serves the Llama Stack APIs:
```yaml
server:
port: 8321 # Port to listen on (default: 8321)
tls_certfile: "/path/to/cert.pem" # Optional: Path to TLS certificate for HTTPS
tls_keyfile: "/path/to/key.pem" # Optional: Path to TLS key for HTTPS
cors: true # Optional: Enable CORS (dev mode) or full config object
```
### CORS Configuration
CORS (Cross-Origin Resource Sharing) can be configured in two ways:
**Local development** (allows localhost origins only):
```yaml
server:
cors: true
```
**Explicit configuration** (custom origins and settings):
```yaml
server:
cors:
allow_origins: ["https://myapp.com", "https://app.example.com"]
allow_methods: ["GET", "POST", "PUT", "DELETE"]
allow_headers: ["Content-Type", "Authorization"]
allow_credentials: true
max_age: 3600
```
When `cors: true`, the server enables secure localhost-only access for local development. For production, specify exact origins to maintain security.
### Authentication Configuration
> **Breaking Change (v0.2.14)**: The authentication configuration structure has changed. The previous format with `provider_type` and `config` fields has been replaced with a unified `provider_config` field that includes the `type` field. Update your configuration files accordingly.
The `auth` section configures authentication for the server. When configured, all API requests must include a valid Bearer token in the Authorization header:
```
Authorization: Bearer <token>
```
The server supports multiple authentication providers:
#### OAuth 2.0/OpenID Connect Provider with Kubernetes
The server can be configured to use service account tokens for authorization, validating these against the Kubernetes API server, e.g.:
```yaml
server:
auth:
provider_config:
type: "oauth2_token"
jwks:
uri: "https://kubernetes.default.svc:8443/openid/v1/jwks"
token: "${env.TOKEN:+}"
key_recheck_period: 3600
tls_cafile: "/path/to/ca.crt"
issuer: "https://kubernetes.default.svc"
audience: "https://kubernetes.default.svc"
```
To find your cluster's jwks uri (from which the public key(s) to verify the token signature are obtained), run:
```
kubectl get --raw /.well-known/openid-configuration| jq -r .jwks_uri
```
For the tls_cafile, you can use the CA certificate of the OIDC provider:
```bash
kubectl config view --minify -o jsonpath='{.clusters[0].cluster.certificate-authority}'
```
For the issuer, you can use the OIDC provider's URL:
```bash
kubectl get --raw /.well-known/openid-configuration| jq .issuer
```
The audience can be obtained from a token, e.g. run:
```bash
kubectl create token default --duration=1h | cut -d. -f2 | base64 -d | jq .aud
```
The jwks token is used to authorize access to the jwks endpoint. You can obtain a token by running:
```bash
kubectl create namespace llama-stack
kubectl create serviceaccount llama-stack-auth -n llama-stack
kubectl create token llama-stack-auth -n llama-stack > llama-stack-auth-token
export TOKEN=$(cat llama-stack-auth-token)
```
Alternatively, you can configure the jwks endpoint to allow anonymous access. To do this, make sure
the `kube-apiserver` runs with `--anonymous-auth=true` to allow unauthenticated requests
and that the correct RoleBinding is created to allow the service account to access the necessary
resources. If that is not the case, you can create a RoleBinding for the service account to access
the necessary resources:
```yaml
# allow-anonymous-openid.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: allow-anonymous-openid
rules:
- nonResourceURLs: ["/openid/v1/jwks"]
verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: allow-anonymous-openid
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: allow-anonymous-openid
subjects:
- kind: User
name: system:anonymous
apiGroup: rbac.authorization.k8s.io
```
And then apply the configuration:
```bash
kubectl apply -f allow-anonymous-openid.yaml
```
The provider extracts user information from the JWT token:
- Username from the `sub` claim becomes a role
- Kubernetes groups become teams
You can easily validate a request by running:
```bash
curl -s -L -H "Authorization: Bearer $(cat llama-stack-auth-token)" http://127.0.0.1:8321/v1/providers
```
#### Kubernetes Authentication Provider
The server can be configured to use Kubernetes SelfSubjectReview API to validate tokens directly against the Kubernetes API server:
```yaml
server:
auth:
provider_config:
type: "kubernetes"
api_server_url: "https://kubernetes.default.svc"
claims_mapping:
username: "roles"
groups: "roles"
uid: "uid_attr"
verify_tls: true
tls_cafile: "/path/to/ca.crt"
```
Configuration options:
- `api_server_url`: The Kubernetes API server URL (e.g., https://kubernetes.default.svc:6443)
- `verify_tls`: Whether to verify TLS certificates (default: true)
- `tls_cafile`: Path to CA certificate file for TLS verification
- `claims_mapping`: Mapping of Kubernetes user claims to access attributes
The provider validates tokens by sending a SelfSubjectReview request to the Kubernetes API server at `/apis/authentication.k8s.io/v1/selfsubjectreviews`. The provider extracts user information from the response:
- Username from the `userInfo.username` field
- Groups from the `userInfo.groups` field
- UID from the `userInfo.uid` field
To obtain a token for testing:
```bash
kubectl create namespace llama-stack
kubectl create serviceaccount llama-stack-auth -n llama-stack
kubectl create token llama-stack-auth -n llama-stack > llama-stack-auth-token
```
You can validate a request by running:
```bash
curl -s -L -H "Authorization: Bearer $(cat llama-stack-auth-token)" http://127.0.0.1:8321/v1/providers
```
#### GitHub Token Provider
Validates GitHub personal access tokens or OAuth tokens directly:
```yaml
server:
auth:
provider_config:
type: "github_token"
github_api_base_url: "https://api.github.com" # Or GitHub Enterprise URL
```
The provider fetches user information from GitHub and maps it to access attributes based on the `claims_mapping` configuration.
#### Custom Provider
Validates tokens against a custom authentication endpoint:
```yaml
server:
auth:
provider_config:
type: "custom"
endpoint: "https://auth.example.com/validate" # URL of the auth endpoint
```
The custom endpoint receives a POST request with:
```json
{
"api_key": "<token>",
"request": {
"path": "/api/v1/endpoint",
"headers": {
"content-type": "application/json",
"user-agent": "curl/7.64.1"
},
"params": {
"key": ["value"]
}
}
}
```
And must respond with:
```json
{
"access_attributes": {
"roles": ["admin", "user"],
"teams": ["ml-team", "nlp-team"],
"projects": ["llama-3", "project-x"],
"namespaces": ["research"]
},
"message": "Authentication successful"
}
```
If no access attributes are returned, the token is used as a namespace.
### Access control
When authentication is enabled, access to resources is controlled
through the `access_policy` attribute of the auth config section under
server. The value for this is a list of access rules.
Each access rule defines a list of actions either to permit or to
forbid. It may specify a principal or a resource that must match for
the rule to take effect.
Valid actions are create, read, update, and delete. The resource to
match should be specified in the form of a type qualified identifier,
e.g. model::my-model or vector_db::some-db, or a wildcard for all
resources of a type, e.g. model::*. If the principal or resource are
not specified, they will match all requests.
The valid resource types are model, shield, vector_db, dataset,
scoring_function, benchmark, tool, tool_group and session.
A rule may also specify a condition, either a 'when' or an 'unless',
with additional constraints as to where the rule applies. The
constraints supported at present are:
- 'user with <attr-value> in <attr-name>'
- 'user with <attr-value> not in <attr-name>'
- 'user is owner'
- 'user is not owner'
- 'user in owners <attr-name>'
- 'user not in owners <attr-name>'
The attributes defined for a user will depend on how the auth
configuration is defined.
When checking whether a particular action is allowed by the current
user for a resource, all the defined rules are tested in order to find
a match. If a match is found, the request is permitted or forbidden
depending on the type of rule. If no match is found, the request is
denied.
If no explicit rules are specified, a default policy is defined with
which all users can access all resources defined in config but
resources created dynamically can only be accessed by the user that
created them.
Examples:
The following restricts access to particular github users:
```yaml
server:
auth:
provider_config:
type: "github_token"
github_api_base_url: "https://api.github.com"
access_policy:
- permit:
principal: user-1
actions: [create, read, delete]
description: user-1 has full access to all resources
- permit:
principal: user-2
actions: [read]
resource: model::model-1
description: user-2 has read access to model-1 only
```
Similarly, the following restricts access to particular kubernetes
service accounts:
```yaml
server:
auth:
provider_config:
type: "oauth2_token"
audience: https://kubernetes.default.svc.cluster.local
issuer: https://kubernetes.default.svc.cluster.local
tls_cafile: /home/gsim/.minikube/ca.crt
jwks:
uri: https://kubernetes.default.svc.cluster.local:8443/openid/v1/jwks
token: ${env.TOKEN}
access_policy:
- permit:
principal: system:serviceaccount:my-namespace:my-serviceaccount
actions: [create, read, delete]
description: specific serviceaccount has full access to all resources
- permit:
principal: system:serviceaccount:default:default
actions: [read]
resource: model::model-1
description: default account has read access to model-1 only
```
The following policy, which assumes that users are defined with roles
and teams by whichever authentication system is in use, allows any
user with a valid token to use models, create resources other than
models, read and delete resources they created and read resources
created by users sharing a team with them:
```
access_policy:
- permit:
actions: [read]
resource: model::*
description: all users have read access to models
- forbid:
actions: [create, delete]
resource: model::*
unless: user with admin in roles
description: only user with admin role can create or delete models
- permit:
actions: [create, read, delete]
when: user is owner
description: users can create resources other than models and read and delete those they own
- permit:
actions: [read]
when: user in owner teams
description: any user has read access to any resource created by a user with the same team
```
#### API Endpoint Authorization with Scopes
In addition to resource-based access control, Llama Stack supports endpoint-level authorization using OAuth 2.0 style scopes. When authentication is enabled, specific API endpoints require users to have particular scopes in their authentication token.
**Scope-Gated APIs:**
The following APIs are currently gated by scopes:
- **Telemetry API** (scope: `telemetry.read`):
- `POST /telemetry/traces` - Query traces
- `GET /telemetry/traces/{trace_id}` - Get trace by ID
- `GET /telemetry/traces/{trace_id}/spans/{span_id}` - Get span by ID
- `POST /telemetry/spans/{span_id}/tree` - Get span tree
- `POST /telemetry/spans` - Query spans
- `POST /telemetry/metrics/{metric_name}` - Query metrics
**Authentication Configuration:**
For **JWT/OAuth2 providers**, scopes should be included in the JWT's claims:
```json
{
"sub": "user123",
"scope": "telemetry.read",
"aud": "llama-stack"
}
```
For **custom authentication providers**, the endpoint must return user attributes including the `scopes` array:
```json
{
"principal": "user123",
"attributes": {
"scopes": ["telemetry.read"]
}
}
```
**Behavior:**
- Users without the required scope receive a 403 Forbidden response
- When authentication is disabled, scope checks are bypassed
- Endpoints without `required_scope` work normally for all authenticated users
### Quota Configuration
The `quota` section allows you to enable server-side request throttling for both
authenticated and anonymous clients. This is useful for preventing abuse, enforcing
fairness across tenants, and controlling infrastructure costs without requiring
client-side rate limiting or external proxies.
Quotas are disabled by default. When enabled, each client is tracked using either:
* Their authenticated `client_id` (derived from the Bearer token), or
* Their IP address (fallback for anonymous requests)
Quota state is stored in a SQLite-backed key-value store, and rate limits are applied
within a configurable time window (currently only `day` is supported).
#### Example
```yaml
server:
quota:
kvstore:
type: sqlite
db_path: ./quotas.db
anonymous_max_requests: 100
authenticated_max_requests: 1000
period: day
```
#### Configuration Options
| Field | Description |
| ---------------------------- | -------------------------------------------------------------------------- |
| `kvstore` | Required. Backend storage config for tracking request counts. |
| `kvstore.type` | Must be `"sqlite"` for now. Other backends may be supported in the future. |
| `kvstore.db_path` | File path to the SQLite database. |
| `anonymous_max_requests` | Max requests per period for unauthenticated clients. |
| `authenticated_max_requests` | Max requests per period for authenticated clients. |
| `period` | Time window for quota enforcement. Only `"day"` is supported. |
> Note: if `authenticated_max_requests` is set but no authentication provider is
configured, the server will fall back to applying `anonymous_max_requests` to all
clients.
#### Example with Authentication Enabled
```yaml
server:
port: 8321
auth:
provider_config:
type: custom
endpoint: https://auth.example.com/validate
quota:
kvstore:
type: sqlite
db_path: ./quotas.db
anonymous_max_requests: 100
authenticated_max_requests: 1000
period: day
```
If a client exceeds their limit, the server responds with:
```http
HTTP/1.1 429 Too Many Requests
Content-Type: application/json
{
"error": {
"message": "Quota exceeded"
}
}
```
### CORS Configuration
Configure CORS to allow web browsers to make requests from different domains. Disabled by default.
#### Quick Setup
For development, use the simple boolean flag:
```yaml
server:
cors: true # Auto-enables localhost with any port
```
This automatically allows `http://localhost:*` and `https://localhost:*` with secure defaults.
#### Custom Configuration
For specific origins and full control:
```yaml
server:
cors:
allow_origins: ["https://myapp.com", "https://staging.myapp.com"]
allow_credentials: true
allow_methods: ["GET", "POST", "PUT", "DELETE"]
allow_headers: ["Content-Type", "Authorization"]
allow_origin_regex: "https://.*\\.example\\.com" # Optional regex pattern
expose_headers: ["X-Total-Count"]
max_age: 86400
```
#### Configuration Options
| Field | Description | Default |
| -------------------- | ---------------------------------------------- | ------- |
| `allow_origins` | List of allowed origins. Use `["*"]` for any. | `["*"]` |
| `allow_origin_regex` | Regex pattern for allowed origins (optional). | `None` |
| `allow_methods` | Allowed HTTP methods. | `["*"]` |
| `allow_headers` | Allowed headers. | `["*"]` |
| `allow_credentials` | Allow credentials (cookies, auth headers). | `false` |
| `expose_headers` | Headers exposed to browser. | `[]` |
| `max_age` | Preflight cache time (seconds). | `600` |
**Security Notes**:
- `allow_credentials: true` requires explicit origins (no wildcards)
- `cors: true` enables localhost access only (secure for development)
- For public APIs, always specify exact allowed origins
## Extending to handle Safety
Configuring Safety can be a little involved so it is instructive to go through an example.
The Safety API works with the associated Resource called a `Shield`. Providers can support various kinds of Shields. Good examples include the [Llama Guard](https://ai.meta.com/research/publications/llama-guard-llm-based-input-output-safeguard-for-human-ai-conversations/) system-safety models, or [Bedrock Guardrails](https://aws.amazon.com/bedrock/guardrails/).
To configure a Bedrock Shield, you would need to add:
- A Safety API provider instance with type `remote::bedrock`
- A Shield resource served by this provider.
```yaml
...
providers:
safety:
- provider_id: bedrock
provider_type: remote::bedrock
config:
aws_access_key_id: ${env.AWS_ACCESS_KEY_ID}
aws_secret_access_key: ${env.AWS_SECRET_ACCESS_KEY}
...
shields:
- provider_id: bedrock
params:
guardrailVersion: ${env.GUARDRAIL_VERSION}
provider_shield_id: ${env.GUARDRAIL_ID}
...
```
The situation is more involved if the Shield needs _Inference_ of an associated model. This is the case with Llama Guard. In that case, you would need to add:
- A Safety API provider instance with type `inline::llama-guard`
- An Inference API provider instance for serving the model.
- A Model resource associated with this provider.
- A Shield resource served by the Safety provider.
The yaml configuration for this setup, assuming you were using vLLM as your inference server, would look like:
```yaml
...
providers:
safety:
- provider_id: llama-guard
provider_type: inline::llama-guard
config: {}
inference:
# this vLLM server serves the "normal" inference model (e.g., llama3.2:3b)
- provider_id: vllm-0
provider_type: remote::vllm
config:
url: ${env.VLLM_URL:=http://localhost:8000}
# this vLLM server serves the llama-guard model (e.g., llama-guard:3b)
- provider_id: vllm-1
provider_type: remote::vllm
config:
url: ${env.SAFETY_VLLM_URL:=http://localhost:8001}
...
models:
- metadata: {}
model_id: ${env.INFERENCE_MODEL}
provider_id: vllm-0
provider_model_id: null
- metadata: {}
model_id: ${env.SAFETY_MODEL}
provider_id: vllm-1
provider_model_id: null
shields:
- provider_id: llama-guard
shield_id: ${env.SAFETY_MODEL} # Llama Guard shields are identified by the corresponding LlamaGuard model
provider_shield_id: null
...
```

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@ -0,0 +1,46 @@
---
title: Customizing run.yaml
description: Customizing run.yaml files for Llama Stack templates
sidebar_label: Customizing run.yaml
sidebar_position: 4
---
# Customizing run.yaml Files
The `run.yaml` files generated by Llama Stack templates are **starting points** designed to be customized for your specific needs. They are not meant to be used as-is in production environments.
## Key Points
- **Templates are starting points**: Generated `run.yaml` files contain defaults for development/testing
- **Customization expected**: Update URLs, credentials, models, and settings for your environment
- **Version control separately**: Keep customized configs in your own repository
- **Environment-specific**: Create different configurations for dev, staging, production
## What You Can Customize
You can customize:
- **Provider endpoints**: Change `http://localhost:8000` to your actual servers
- **Swap providers**: Replace default providers (e.g., swap Tavily with Brave for search)
- **Storage paths**: Move from `/tmp/` to production directories
- **Authentication**: Add API keys, SSL, timeouts
- **Models**: Different model sizes for dev vs prod
- **Database settings**: Switch from SQLite to PostgreSQL
- **Tool configurations**: Add custom tools and integrations
## Best Practices
- Use environment variables for secrets and environment-specific values
- Create separate `run.yaml` files for different environments (dev, staging, prod)
- Document your changes with comments
- Test configurations before deployment
- Keep your customized configs in version control
Example structure:
```
your-project/
├── configs/
│ ├── dev-run.yaml
│ ├── prod-run.yaml
└── README.md
```
The goal is to take the generated template and adapt it to your specific infrastructure and operational needs.

View file

@ -0,0 +1,19 @@
#!/usr/bin/env bash
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
set -euo pipefail
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
K8S_DIR="${SCRIPT_DIR}/../k8s"
echo "Setting up AWS EKS-specific storage class..."
kubectl apply -f gp3-topology-aware.yaml
echo "Running main Kubernetes deployment..."
cd "${K8S_DIR}"
./apply.sh "$@"

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# Set up default storage class on AWS EKS
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: gp3-topology-aware
annotations:
storageclass.kubernetes.io/is-default-class: "true"
parameters:
type: gp3
iops: "3000"
throughput: "125"
provisioner: ebs.csi.aws.com
reclaimPolicy: Delete
volumeBindingMode: WaitForFirstConsumer
allowVolumeExpansion: true

View file

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---
title: Using Llama Stack as a Library
description: How to use Llama Stack as a Python library instead of running a server
sidebar_label: Importing as Library
sidebar_position: 5
---
# Using Llama Stack as a Library
## Setup Llama Stack without a Server
If you are planning to use an external service for Inference (even Ollama or TGI counts as external), it is often easier to use Llama Stack as a library.
This avoids the overhead of setting up a server.
```bash
# setup
uv pip install llama-stack
llama stack build --distro starter --image-type venv
```
```python
from llama_stack.core.library_client import LlamaStackAsLibraryClient
client = LlamaStackAsLibraryClient(
"starter",
# provider_data is optional, but if you need to pass in any provider specific data, you can do so here.
provider_data={"tavily_search_api_key": os.environ["TAVILY_SEARCH_API_KEY"]},
)
```
This will parse your config and set up any inline implementations and remote clients needed for your implementation.
Then, you can access the APIs like `models` and `inference` on the client and call their methods directly:
```python
response = client.models.list()
```
If you've created a [custom distribution](building_distro.md), you can also use the run.yaml configuration file directly:
```python
client = LlamaStackAsLibraryClient(config_path)
```

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---
title: Distributions Overview
description: Pre-packaged sets of Llama Stack components for different deployment scenarios
sidebar_label: Overview
sidebar_position: 1
---
# Distributions Overview
A distribution is a pre-packaged set of Llama Stack components that can be deployed together.
This section provides an overview of the distributions available in Llama Stack.
## Distribution Guides
- **[Available Distributions](./list_of_distributions)** - Complete list and comparison of all distributions
- **[Building Custom Distributions](./building_distro)** - Create your own distribution from scratch
- **[Customizing Configuration](./customizing_run_yaml)** - Customize run.yaml for your needs
- **[Starting Llama Stack Server](./starting_llama_stack_server)** - How to run distributions
- **[Importing as Library](./importing_as_library)** - Use distributions in your code
- **[Configuration Reference](./configuration)** - Configuration file format details

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@ -0,0 +1,63 @@
#!/usr/bin/env bash
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
export POSTGRES_USER=llamastack
export POSTGRES_DB=llamastack
export POSTGRES_PASSWORD=llamastack
export INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct
export SAFETY_MODEL=meta-llama/Llama-Guard-3-1B
# HF_TOKEN should be set by the user; base64 encode it for the secret
if [ -n "${HF_TOKEN:-}" ]; then
export HF_TOKEN_BASE64=$(echo -n "$HF_TOKEN" | base64)
else
echo "ERROR: HF_TOKEN not set. You need it for vLLM to download models from Hugging Face."
exit 1
fi
if [ -z "${GITHUB_CLIENT_ID:-}" ]; then
echo "ERROR: GITHUB_CLIENT_ID not set. You need it for Github login to work. See the Kubernetes Deployment Guide in the Llama Stack documentation."
exit 1
fi
if [ -z "${GITHUB_CLIENT_SECRET:-}" ]; then
echo "ERROR: GITHUB_CLIENT_SECRET not set. You need it for Github login to work. See the Kubernetes Deployment Guide in the Llama Stack documentation."
exit 1
fi
if [ -z "${LLAMA_STACK_UI_URL:-}" ]; then
echo "ERROR: LLAMA_STACK_UI_URL not set. Should be set to the external URL of the UI (excluding port). You need it for Github login to work. See the Kubernetes Deployment Guide in the Llama Stack documentation."
exit 1
fi
set -euo pipefail
set -x
# Apply the HF token secret if HF_TOKEN is provided
if [ -n "${HF_TOKEN:-}" ]; then
envsubst < ./hf-token-secret.yaml.template | kubectl apply -f -
fi
envsubst < ./vllm-k8s.yaml.template | kubectl apply -f -
envsubst < ./vllm-safety-k8s.yaml.template | kubectl apply -f -
envsubst < ./postgres-k8s.yaml.template | kubectl apply -f -
envsubst < ./chroma-k8s.yaml.template | kubectl apply -f -
kubectl create configmap llama-stack-config --from-file=stack_run_config.yaml \
--dry-run=client -o yaml > stack-configmap.yaml
kubectl apply -f stack-configmap.yaml
envsubst < ./stack-k8s.yaml.template | kubectl apply -f -
envsubst < ./ingress-k8s.yaml.template | kubectl apply -f -
envsubst < ./ui-k8s.yaml.template | kubectl apply -f -

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apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: chromadb-pvc
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 20Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: chromadb
spec:
replicas: 1
selector:
matchLabels:
app: chromadb
template:
metadata:
labels:
app: chromadb
spec:
containers:
- name: chromadb
image: chromadb/chroma:latest
ports:
- containerPort: 6000
env:
- name: CHROMA_HOST
value: "0.0.0.0"
- name: CHROMA_PORT
value: "6000"
- name: PERSIST_DIRECTORY
value: "/chroma/chroma"
- name: CHROMA_DB_IMPL
value: "duckdb+parquet"
resources:
requests:
memory: "512Mi"
cpu: "250m"
limits:
memory: "2Gi"
cpu: "1000m"
volumeMounts:
- name: chromadb-storage
mountPath: /chroma/chroma
volumes:
- name: chromadb-storage
persistentVolumeClaim:
claimName: chromadb-pvc
---
apiVersion: v1
kind: Service
metadata:
name: chromadb
spec:
selector:
app: chromadb
ports:
- protocol: TCP
port: 6000
targetPort: 6000
type: ClusterIP

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@ -0,0 +1,7 @@
apiVersion: v1
kind: Secret
metadata:
name: hf-token-secret
type: Opaque
data:
token: ${HF_TOKEN_BASE64}

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apiVersion: v1
kind: Service
metadata:
name: llama-stack-service
spec:
type: LoadBalancer
selector:
app.kubernetes.io/name: llama-stack
ports:
- name: llama-stack-api
port: 8321
targetPort: 8321
protocol: TCP
- name: llama-stack-ui
port: 8322
targetPort: 8322
protocol: TCP

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apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: postgres-pvc
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: postgres
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: postgres
template:
metadata:
labels:
app.kubernetes.io/name: postgres
spec:
containers:
- name: postgres
image: postgres:15
env:
- name: POSTGRES_DB
value: "${POSTGRES_DB}"
- name: POSTGRES_USER
value: "${POSTGRES_USER}"
- name: POSTGRES_PASSWORD
value: "${POSTGRES_PASSWORD}"
- name: PGDATA
value: "/var/lib/postgresql/data/pgdata"
ports:
- containerPort: 5432
resources:
requests:
memory: "512Mi"
cpu: "250m"
limits:
memory: "1Gi"
cpu: "500m"
volumeMounts:
- name: postgres-storage
mountPath: /var/lib/postgresql/data
volumes:
- name: postgres-storage
persistentVolumeClaim:
claimName: postgres-pvc
---
apiVersion: v1
kind: Service
metadata:
name: postgres-server
spec:
selector:
app.kubernetes.io/name: postgres
ports:
- protocol: TCP
port: 5432
targetPort: 5432
type: ClusterIP

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@ -0,0 +1,56 @@
apiVersion: v1
data:
stack_run_config.yaml: "version: '2'\nimage_name: kubernetes-demo\napis:\n- agents\n-
inference\n- files\n- safety\n- telemetry\n- tool_runtime\n- vector_io\nproviders:\n
\ inference:\n - provider_id: vllm-inference\n provider_type: remote::vllm\n
\ config:\n url: ${env.VLLM_URL:=http://localhost:8000/v1}\n max_tokens:
${env.VLLM_MAX_TOKENS:=4096}\n api_token: ${env.VLLM_API_TOKEN:=fake}\n tls_verify:
${env.VLLM_TLS_VERIFY:=true}\n - provider_id: vllm-safety\n provider_type:
remote::vllm\n config:\n url: ${env.VLLM_SAFETY_URL:=http://localhost:8000/v1}\n
\ max_tokens: ${env.VLLM_MAX_TOKENS:=4096}\n api_token: ${env.VLLM_API_TOKEN:=fake}\n
\ tls_verify: ${env.VLLM_TLS_VERIFY:=true}\n - provider_id: sentence-transformers\n
\ provider_type: inline::sentence-transformers\n config: {}\n vector_io:\n
\ - provider_id: ${env.ENABLE_CHROMADB:+chromadb}\n provider_type: remote::chromadb\n
\ config:\n url: ${env.CHROMADB_URL:=}\n kvstore:\n type: postgres\n
\ host: ${env.POSTGRES_HOST:=localhost}\n port: ${env.POSTGRES_PORT:=5432}\n
\ db: ${env.POSTGRES_DB:=llamastack}\n user: ${env.POSTGRES_USER:=llamastack}\n
\ password: ${env.POSTGRES_PASSWORD:=llamastack}\n files:\n - provider_id:
meta-reference-files\n provider_type: inline::localfs\n config:\n storage_dir:
${env.FILES_STORAGE_DIR:=~/.llama/distributions/starter/files}\n metadata_store:\n
\ type: sqlite\n db_path: ${env.SQLITE_STORE_DIR:=~/.llama/distributions/starter}/files_metadata.db
\ \n safety:\n - provider_id: llama-guard\n provider_type: inline::llama-guard\n
\ config:\n excluded_categories: []\n agents:\n - provider_id: meta-reference\n
\ provider_type: inline::meta-reference\n config:\n persistence_store:\n
\ type: postgres\n host: ${env.POSTGRES_HOST:=localhost}\n port:
${env.POSTGRES_PORT:=5432}\n db: ${env.POSTGRES_DB:=llamastack}\n user:
${env.POSTGRES_USER:=llamastack}\n password: ${env.POSTGRES_PASSWORD:=llamastack}\n
\ responses_store:\n type: postgres\n host: ${env.POSTGRES_HOST:=localhost}\n
\ port: ${env.POSTGRES_PORT:=5432}\n db: ${env.POSTGRES_DB:=llamastack}\n
\ user: ${env.POSTGRES_USER:=llamastack}\n password: ${env.POSTGRES_PASSWORD:=llamastack}\n
\ telemetry:\n - provider_id: meta-reference\n provider_type: inline::meta-reference\n
\ config:\n service_name: \"${env.OTEL_SERVICE_NAME:=\\u200B}\"\n sinks:
${env.TELEMETRY_SINKS:=console}\n tool_runtime:\n - provider_id: brave-search\n
\ provider_type: remote::brave-search\n config:\n api_key: ${env.BRAVE_SEARCH_API_KEY:+}\n
\ max_results: 3\n - provider_id: tavily-search\n provider_type: remote::tavily-search\n
\ config:\n api_key: ${env.TAVILY_SEARCH_API_KEY:+}\n max_results:
3\n - provider_id: rag-runtime\n provider_type: inline::rag-runtime\n config:
{}\n - provider_id: model-context-protocol\n provider_type: remote::model-context-protocol\n
\ config: {}\nmetadata_store:\n type: postgres\n host: ${env.POSTGRES_HOST:=localhost}\n
\ port: ${env.POSTGRES_PORT:=5432}\n db: ${env.POSTGRES_DB:=llamastack}\n user:
${env.POSTGRES_USER:=llamastack}\n password: ${env.POSTGRES_PASSWORD:=llamastack}\n
\ table_name: llamastack_kvstore\ninference_store:\n type: postgres\n host:
${env.POSTGRES_HOST:=localhost}\n port: ${env.POSTGRES_PORT:=5432}\n db: ${env.POSTGRES_DB:=llamastack}\n
\ user: ${env.POSTGRES_USER:=llamastack}\n password: ${env.POSTGRES_PASSWORD:=llamastack}\nmodels:\n-
metadata:\n embedding_dimension: 384\n model_id: all-MiniLM-L6-v2\n provider_id:
sentence-transformers\n model_type: embedding\n- metadata: {}\n model_id: ${env.INFERENCE_MODEL}\n
\ provider_id: vllm-inference\n model_type: llm\n- metadata: {}\n model_id:
${env.SAFETY_MODEL:=meta-llama/Llama-Guard-3-1B}\n provider_id: vllm-safety\n
\ model_type: llm\nshields:\n- shield_id: ${env.SAFETY_MODEL:=meta-llama/Llama-Guard-3-1B}\nvector_dbs:
[]\ndatasets: []\nscoring_fns: []\nbenchmarks: []\ntool_groups:\n- toolgroup_id:
builtin::websearch\n provider_id: tavily-search\n- toolgroup_id: builtin::rag\n
\ provider_id: rag-runtime\nserver:\n port: 8321\n auth:\n provider_config:\n
\ type: github_token\n"
kind: ConfigMap
metadata:
creationTimestamp: null
name: llama-stack-config

View file

@ -0,0 +1,69 @@
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: llama-pvc
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: llama-stack-server
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: llama-stack
app.kubernetes.io/component: server
template:
metadata:
labels:
app.kubernetes.io/name: llama-stack
app.kubernetes.io/component: server
spec:
containers:
- name: llama-stack
image: llamastack/distribution-starter:latest
imagePullPolicy: Always # since we have specified latest instead of a version
env:
- name: ENABLE_CHROMADB
value: "true"
- name: CHROMADB_URL
value: http://chromadb.default.svc.cluster.local:6000
- name: VLLM_URL
value: http://vllm-server.default.svc.cluster.local:8000/v1
- name: VLLM_MAX_TOKENS
value: "3072"
- name: VLLM_SAFETY_URL
value: http://vllm-server-safety.default.svc.cluster.local:8001/v1
- name: VLLM_TLS_VERIFY
value: "false"
- name: POSTGRES_HOST
value: postgres-server.default.svc.cluster.local
- name: POSTGRES_PORT
value: "5432"
- name: INFERENCE_MODEL
value: "${INFERENCE_MODEL}"
- name: SAFETY_MODEL
value: "${SAFETY_MODEL}"
- name: TAVILY_SEARCH_API_KEY
value: "${TAVILY_SEARCH_API_KEY}"
command: ["python", "-m", "llama_stack.core.server.server", "/etc/config/stack_run_config.yaml", "--port", "8321"]
ports:
- containerPort: 8321
volumeMounts:
- name: llama-storage
mountPath: /root/.llama
- name: llama-config
mountPath: /etc/config
volumes:
- name: llama-storage
persistentVolumeClaim:
claimName: llama-pvc
- name: llama-config
configMap:
name: llama-stack-config

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@ -0,0 +1,140 @@
version: '2'
image_name: kubernetes-demo
apis:
- agents
- inference
- files
- safety
- telemetry
- tool_runtime
- vector_io
providers:
inference:
- provider_id: vllm-inference
provider_type: remote::vllm
config:
url: ${env.VLLM_URL:=http://localhost:8000/v1}
max_tokens: ${env.VLLM_MAX_TOKENS:=4096}
api_token: ${env.VLLM_API_TOKEN:=fake}
tls_verify: ${env.VLLM_TLS_VERIFY:=true}
- provider_id: vllm-safety
provider_type: remote::vllm
config:
url: ${env.VLLM_SAFETY_URL:=http://localhost:8000/v1}
max_tokens: ${env.VLLM_MAX_TOKENS:=4096}
api_token: ${env.VLLM_API_TOKEN:=fake}
tls_verify: ${env.VLLM_TLS_VERIFY:=true}
- provider_id: sentence-transformers
provider_type: inline::sentence-transformers
config: {}
vector_io:
- provider_id: ${env.ENABLE_CHROMADB:+chromadb}
provider_type: remote::chromadb
config:
url: ${env.CHROMADB_URL:=}
kvstore:
type: postgres
host: ${env.POSTGRES_HOST:=localhost}
port: ${env.POSTGRES_PORT:=5432}
db: ${env.POSTGRES_DB:=llamastack}
user: ${env.POSTGRES_USER:=llamastack}
password: ${env.POSTGRES_PASSWORD:=llamastack}
files:
- provider_id: meta-reference-files
provider_type: inline::localfs
config:
storage_dir: ${env.FILES_STORAGE_DIR:=~/.llama/distributions/starter/files}
metadata_store:
type: sqlite
db_path: ${env.SQLITE_STORE_DIR:=~/.llama/distributions/starter}/files_metadata.db
safety:
- provider_id: llama-guard
provider_type: inline::llama-guard
config:
excluded_categories: []
agents:
- provider_id: meta-reference
provider_type: inline::meta-reference
config:
persistence_store:
type: postgres
host: ${env.POSTGRES_HOST:=localhost}
port: ${env.POSTGRES_PORT:=5432}
db: ${env.POSTGRES_DB:=llamastack}
user: ${env.POSTGRES_USER:=llamastack}
password: ${env.POSTGRES_PASSWORD:=llamastack}
responses_store:
type: postgres
host: ${env.POSTGRES_HOST:=localhost}
port: ${env.POSTGRES_PORT:=5432}
db: ${env.POSTGRES_DB:=llamastack}
user: ${env.POSTGRES_USER:=llamastack}
password: ${env.POSTGRES_PASSWORD:=llamastack}
telemetry:
- provider_id: meta-reference
provider_type: inline::meta-reference
config:
service_name: "${env.OTEL_SERVICE_NAME:=\u200B}"
sinks: ${env.TELEMETRY_SINKS:=console}
tool_runtime:
- provider_id: brave-search
provider_type: remote::brave-search
config:
api_key: ${env.BRAVE_SEARCH_API_KEY:+}
max_results: 3
- provider_id: tavily-search
provider_type: remote::tavily-search
config:
api_key: ${env.TAVILY_SEARCH_API_KEY:+}
max_results: 3
- provider_id: rag-runtime
provider_type: inline::rag-runtime
config: {}
- provider_id: model-context-protocol
provider_type: remote::model-context-protocol
config: {}
metadata_store:
type: postgres
host: ${env.POSTGRES_HOST:=localhost}
port: ${env.POSTGRES_PORT:=5432}
db: ${env.POSTGRES_DB:=llamastack}
user: ${env.POSTGRES_USER:=llamastack}
password: ${env.POSTGRES_PASSWORD:=llamastack}
table_name: llamastack_kvstore
inference_store:
type: postgres
host: ${env.POSTGRES_HOST:=localhost}
port: ${env.POSTGRES_PORT:=5432}
db: ${env.POSTGRES_DB:=llamastack}
user: ${env.POSTGRES_USER:=llamastack}
password: ${env.POSTGRES_PASSWORD:=llamastack}
models:
- metadata:
embedding_dimension: 384
model_id: all-MiniLM-L6-v2
provider_id: sentence-transformers
model_type: embedding
- metadata: {}
model_id: ${env.INFERENCE_MODEL}
provider_id: vllm-inference
model_type: llm
- metadata: {}
model_id: ${env.SAFETY_MODEL:=meta-llama/Llama-Guard-3-1B}
provider_id: vllm-safety
model_type: llm
shields:
- shield_id: ${env.SAFETY_MODEL:=meta-llama/Llama-Guard-3-1B}
vector_dbs: []
datasets: []
scoring_fns: []
benchmarks: []
tool_groups:
- toolgroup_id: builtin::websearch
provider_id: tavily-search
- toolgroup_id: builtin::rag
provider_id: rag-runtime
server:
port: 8321
auth:
provider_config:
type: github_token

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apiVersion: apps/v1
kind: Deployment
metadata:
name: llama-stack-ui
labels:
app.kubernetes.io/name: llama-stack
app.kubernetes.io/component: ui
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: llama-stack
app.kubernetes.io/component: ui
template:
metadata:
labels:
app.kubernetes.io/name: llama-stack
app.kubernetes.io/component: ui
spec:
containers:
- name: llama-stack-ui
image: node:18-alpine
command: ["/bin/sh"]
env:
- name: LLAMA_STACK_BACKEND_URL
value: "http://llama-stack-service:8321"
- name: LLAMA_STACK_UI_PORT
value: "8322"
- name: GITHUB_CLIENT_ID
value: "${GITHUB_CLIENT_ID}"
- name: GITHUB_CLIENT_SECRET
value: "${GITHUB_CLIENT_SECRET}"
- name: NEXTAUTH_URL
value: "${LLAMA_STACK_UI_URL}:8322"
args:
- -c
- |
# Install git (not included in alpine by default)
apk add --no-cache git
# Clone the repository
echo "Cloning repository..."
git clone https://github.com/meta-llama/llama-stack.git /app
# Navigate to the UI directory
echo "Navigating to UI directory..."
cd /app/llama_stack/ui
# Check if package.json exists
if [ ! -f "package.json" ]; then
echo "ERROR: package.json not found in $(pwd)"
ls -la
exit 1
fi
# Install dependencies with verbose output
echo "Installing dependencies..."
npm install --verbose
# Verify next is installed
echo "Checking if next is installed..."
npx next --version || echo "Next.js not found, checking node_modules..."
ls -la node_modules/.bin/ | grep next || echo "No next binary found"
npm run dev
ports:
- containerPort: 8322
workingDir: /app

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@ -0,0 +1,70 @@
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: vllm-models
spec:
accessModes:
- ReadWriteOnce
volumeMode: Filesystem
resources:
requests:
storage: 50Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: vllm-server
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: vllm
template:
metadata:
labels:
app.kubernetes.io/name: vllm
workload-type: inference
spec:
nodeSelector:
eks.amazonaws.com/nodegroup: gpu
containers:
- name: vllm
image: vllm/vllm-openai:latest
command: ["/bin/sh", "-c"]
args:
- "vllm serve ${INFERENCE_MODEL} --dtype float16 --enforce-eager --max-model-len 4096 --gpu-memory-utilization 0.6 --enable-auto-tool-choice --tool-call-parser llama4_pythonic"
env:
- name: INFERENCE_MODEL
value: "${INFERENCE_MODEL}"
- name: HUGGING_FACE_HUB_TOKEN
valueFrom:
secretKeyRef:
name: hf-token-secret
key: token
ports:
- containerPort: 8000
resources:
limits:
nvidia.com/gpu: 1
requests:
nvidia.com/gpu: 1
volumeMounts:
- name: llama-storage
mountPath: /root/.cache/huggingface
volumes:
- name: llama-storage
persistentVolumeClaim:
claimName: vllm-models
---
apiVersion: v1
kind: Service
metadata:
name: vllm-server
spec:
selector:
app.kubernetes.io/name: vllm
ports:
- protocol: TCP
port: 8000
targetPort: 8000
type: ClusterIP

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apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: vllm-models-safety
spec:
accessModes:
- ReadWriteOnce
volumeMode: Filesystem
resources:
requests:
storage: 30Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: vllm-server-safety
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: vllm-safety
template:
metadata:
labels:
app.kubernetes.io/name: vllm-safety
workload-type: inference
spec:
nodeSelector:
eks.amazonaws.com/nodegroup: gpu
containers:
- name: vllm-safety
image: vllm/vllm-openai:latest
command: ["/bin/sh", "-c"]
args: [
"vllm serve ${SAFETY_MODEL} --dtype float16 --enforce-eager --max-model-len 4096 --port 8001 --gpu-memory-utilization 0.3"
]
env:
- name: SAFETY_MODEL
value: "${SAFETY_MODEL}"
- name: HUGGING_FACE_HUB_TOKEN
valueFrom:
secretKeyRef:
name: hf-token-secret
key: token
ports:
- containerPort: 8001
resources:
limits:
nvidia.com/gpu: 1
requests:
nvidia.com/gpu: 1
volumeMounts:
- name: llama-storage
mountPath: /root/.cache/huggingface
volumes:
- name: llama-storage
persistentVolumeClaim:
claimName: vllm-models-safety
---
apiVersion: v1
kind: Service
metadata:
name: vllm-server-safety
spec:
selector:
app.kubernetes.io/name: vllm-safety
ports:
- protocol: TCP
port: 8001
targetPort: 8001
type: ClusterIP

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@ -0,0 +1,134 @@
---
title: Available Distributions
description: List of available distributions for Llama Stack
sidebar_label: Available Distributions
sidebar_position: 2
---
# Available Distributions
Llama Stack provides several pre-configured distributions to help you get started quickly. Choose the distribution that best fits your hardware and use case.
## Quick Reference
| Distribution | Use Case | Hardware Requirements | Provider |
|--------------|----------|----------------------|----------|
| `distribution-starter` | General purpose, prototyping | Any (CPU/GPU) | Ollama, Remote APIs |
| `distribution-meta-reference-gpu` | High-performance inference | GPU required | Local GPU inference |
| Remote-hosted | Production, managed service | None | Partner providers |
| iOS/Android SDK | Mobile applications | Mobile device | On-device inference |
## Choose Your Distribution
### 🚀 Getting Started (Recommended for Beginners)
**Use `distribution-starter` if you want to:**
- Prototype quickly without GPU requirements
- Use remote inference providers (Fireworks, Together, vLLM etc.)
- Run locally with Ollama for development
```bash
docker pull llama-stack/distribution-starter
```
**Guides:** [Starter Distribution Guide](self_hosted_distro/starter)
### 🖥️ Self-Hosted with GPU
**Use `distribution-meta-reference-gpu` if you:**
- Have access to GPU hardware
- Want maximum performance and control
- Need to run inference locally
```bash
docker pull llama-stack/distribution-meta-reference-gpu
```
**Guides:** [Meta Reference GPU Guide](self_hosted_distro/meta-reference-gpu)
### 🖥️ Self-Hosted with NVIDA NeMo Microservices
**Use `nvidia` if you:**
- Want to use Llama Stack with NVIDIA NeMo Microservices
**Guides:** [NVIDIA Distribution Guide](self_hosted_distro/nvidia)
### ☁️ Managed Hosting
**Use remote-hosted endpoints if you:**
- Don't want to manage infrastructure
- Need production-ready reliability
- Prefer managed services
**Partners:** [Fireworks.ai](https://fireworks.ai) and [Together.xyz](https://together.xyz)
**Guides:** [Remote-Hosted Endpoints](remote_hosted_distro/index)
### 📱 Mobile Development
**Use mobile SDKs if you:**
- Are building iOS or Android applications
- Need on-device inference capabilities
- Want offline functionality
- [iOS SDK](ondevice_distro/ios_sdk)
- [Android SDK](ondevice_distro/android_sdk)
### 🔧 Custom Solutions
**Build your own distribution if:**
- None of the above fit your specific needs
- You need custom configurations
- You want to optimize for your specific use case
**Guides:** [Building Custom Distributions](building_distro.md)
## Detailed Documentation
### Self-Hosted Distributions
```{toctree}
:maxdepth: 1
self_hosted_distro/starter
self_hosted_distro/meta-reference-gpu
```
### Remote-Hosted Solutions
```{toctree}
:maxdepth: 1
remote_hosted_distro/index
```
### Mobile SDKs
```{toctree}
:maxdepth: 1
ondevice_distro/ios_sdk
ondevice_distro/android_sdk
```
## Decision Flow
```mermaid
graph TD
A[What's your use case?] --> B{Need mobile app?}
B -->|Yes| C[Use Mobile SDKs]
B -->|No| D{Have GPU hardware?}
D -->|Yes| E[Use Meta Reference GPU]
D -->|No| F{Want managed hosting?}
F -->|Yes| G[Use Remote-Hosted]
F -->|No| H[Use Starter Distribution]
```
## Next Steps
1. **Choose your distribution** from the options above
2. **Follow the setup guide** for your selected distribution
3. **Configure your providers** with API keys or local models
4. **Start building** with Llama Stack!
For help choosing or troubleshooting, check our [Getting Started Guide](../getting_started/index.md) or [Community Support](https://github.com/llama-stack/llama-stack/discussions).

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@ -0,0 +1,262 @@
# Llama Stack Client Kotlin API Library
We are excited to share a guide for a Kotlin Library that brings front the benefits of Llama Stack to your Android device. This library is a set of SDKs that provide a simple and effective way to integrate AI capabilities into your Android app whether it is local (on-device) or remote inference.
Features:
- Local Inferencing: Run Llama models purely on-device with real-time processing. We currently utilize ExecuTorch as the local inference distributor and may support others in the future.
- [ExecuTorch](https://github.com/pytorch/executorch/tree/main) is a complete end-to-end solution within the PyTorch framework for inferencing capabilities on-device with high portability and seamless performance.
- Remote Inferencing: Perform inferencing tasks remotely with Llama models hosted on a remote connection (or serverless localhost).
- Simple Integration: With easy-to-use APIs, a developer can quickly integrate Llama Stack in their Android app. The difference with local vs remote inferencing is also minimal.
Latest Release Notes: [link](https://github.com/meta-llama/llama-stack-client-kotlin/tree/latest-release)
*Tagged releases are stable versions of the project. While we strive to maintain a stable main branch, it's not guaranteed to be free of bugs or issues.*
## Android Demo App
Check out our demo app to see how to integrate Llama Stack into your Android app: [Android Demo App](https://github.com/meta-llama/llama-stack-client-kotlin/tree/latest-release/examples/android_app)
The key files in the app are `ExampleLlamaStackLocalInference.kt`, `ExampleLlamaStackRemoteInference.kts`, and `MainActivity.java`. With encompassed business logic, the app shows how to use Llama Stack for both the environments.
## Quick Start
### Add Dependencies
#### Kotlin Library
Add the following dependency in your `build.gradle.kts` file:
```
dependencies {
implementation("com.llama.llamastack:llama-stack-client-kotlin:0.2.2")
}
```
This will download jar files in your gradle cache in a directory like `~/.gradle/caches/modules-2/files-2.1/com.llama.llamastack/`
If you plan on doing remote inferencing this is sufficient to get started.
#### Dependency for Local
For local inferencing, it is required to include the ExecuTorch library into your app.
Include the ExecuTorch library by:
1. Download the `download-prebuilt-et-lib.sh` script file from the [llama-stack-client-kotlin-client-local](https://github.com/meta-llama/llama-stack-client-kotlin/tree/latest-release/llama-stack-client-kotlin-client-local/download-prebuilt-et-lib.sh) directory to your local machine.
2. Move the script to the top level of your Android app where the `app` directory resides.
3. Run `sh download-prebuilt-et-lib.sh` to create an `app/libs` directory and download the `executorch.aar` in that path. This generates an ExecuTorch library for the XNNPACK delegate.
4. Add the `executorch.aar` dependency in your `build.gradle.kts` file:
```
dependencies {
...
implementation(files("libs/executorch.aar"))
...
}
```
See other dependencies for the local RAG in Android app [README](https://github.com/meta-llama/llama-stack-client-kotlin/tree/latest-release/examples/android_app#quick-start).
## Llama Stack APIs in Your Android App
Breaking down the demo app, this section will show the core pieces that are used to initialize and run inference with Llama Stack using the Kotlin library.
### Setup Remote Inferencing
Start a Llama Stack server on localhost. Here is an example of how you can do this using the firework.ai distribution:
```
uv venv starter --python 3.12
source starter/bin/activate # On Windows: starter\Scripts\activate
pip install --no-cache llama-stack==0.2.2
llama stack build --distro starter --image-type venv
export FIREWORKS_API_KEY=<SOME_KEY>
llama stack run starter --port 5050
```
Ensure the Llama Stack server version is the same as the Kotlin SDK Library for maximum compatibility.
Other inference providers: [Table](../../index.md#supported-llama-stack-implementations)
How to set remote localhost in Demo App: [Settings](https://github.com/meta-llama/llama-stack-client-kotlin/tree/latest-release/examples/android_app#settings)
### Initialize the Client
A client serves as the primary interface for interacting with a specific inference type and its associated parameters. Only after client is initialized then you can configure and start inferences.
<table>
<tr>
<th>Local Inference</th>
<th>Remote Inference</th>
</tr>
<tr>
<td>
```
client = LlamaStackClientLocalClient
.builder()
.modelPath(modelPath)
.tokenizerPath(tokenizerPath)
.temperature(temperature)
.build()
```
</td>
<td>
```
// remoteURL is a string like "http://localhost:5050"
client = LlamaStackClientOkHttpClient
.builder()
.baseUrl(remoteURL)
.build()
```
</td>
</tr>
</table>
### Run Inference
With the Kotlin Library managing all the major operational logic, there are minimal to no changes when running simple chat inference for local or remote:
```
val result = client!!.inference().chatCompletion(
InferenceChatCompletionParams.builder()
.modelId(modelName)
.messages(listOfMessages)
.build()
)
// response contains string with response from model
var response = result.asChatCompletionResponse().completionMessage().content().string();
```
[Remote only] For inference with a streaming response:
```
val result = client!!.inference().chatCompletionStreaming(
InferenceChatCompletionParams.builder()
.modelId(modelName)
.messages(listOfMessages)
.build()
)
// Response can be received as a asChatCompletionResponseStreamChunk as part of a callback.
// See Android demo app for a detailed implementation example.
```
### Setup Custom Tool Calling
Android demo app for more details: [Custom Tool Calling](https://github.com/meta-llama/llama-stack-client-kotlin/tree/latest-release/examples/android_app#tool-calling)
## Advanced Users
The purpose of this section is to share more details with users that would like to dive deeper into the Llama Stack Kotlin Library. Whether youre interested in contributing to the open source library, debugging or just want to learn more, this section is for you!
### Prerequisite
You must complete the following steps:
1. Clone the repo (`git clone https://github.com/meta-llama/llama-stack-client-kotlin.git -b latest-release`)
2. Port the appropriate ExecuTorch libraries over into your Llama Stack Kotlin library environment.
```
cd llama-stack-client-kotlin-client-local
sh download-prebuilt-et-lib.sh --unzip
```
Now you will notice that the `jni/` , `libs/`, and `AndroidManifest.xml` files from the `executorch.aar` file are present in the local module. This way the local client module will be able to realize the ExecuTorch SDK.
### Building for Development/Debugging
If youd like to contribute to the Kotlin library via development, debug, or add play around with the library with various print statements, run the following command in your terminal under the llama-stack-client-kotlin directory.
```
sh build-libs.sh
```
Output: .jar files located in the build-jars directory
Copy the .jar files over to the lib directory in your Android app. At the same time make sure to remove the llama-stack-client-kotlin dependency within your build.gradle.kts file in your app (or if you are using the demo app) to avoid having multiple llama stack client dependencies.
### Additional Options for Local Inferencing
Currently we provide additional properties support with local inferencing. In order to get the tokens/sec metric for each inference call, add the following code in your Android app after you run your chatCompletion inference function. The Reference app has this implementation as well:
```
var tps = (result.asChatCompletionResponse()._additionalProperties()["tps"] as JsonNumber).value as Float
```
We will be adding more properties in the future.
### Additional Options for Remote Inferencing
#### Network options
##### Retries
Requests that experience certain errors are automatically retried 2 times by default, with a short exponential backoff. Connection errors (for example, due to a network connectivity problem), 408 Request Timeout, 409 Conflict, 429 Rate Limit, and >=500 Internal errors will all be retried by default.
You can provide a `maxRetries` on the client builder to configure this:
```kotlin
val client = LlamaStackClientOkHttpClient.builder()
.fromEnv()
.maxRetries(4)
.build()
```
##### Timeouts
Requests time out after 1 minute by default. You can configure this on the client builder:
```kotlin
val client = LlamaStackClientOkHttpClient.builder()
.fromEnv()
.timeout(Duration.ofSeconds(30))
.build()
```
##### Proxies
Requests can be routed through a proxy. You can configure this on the client builder:
```kotlin
val client = LlamaStackClientOkHttpClient.builder()
.fromEnv()
.proxy(new Proxy(
Type.HTTP,
new InetSocketAddress("proxy.com", 8080)
))
.build()
```
##### Environments
Requests are made to the production environment by default. You can connect to other environments, like `sandbox`, via the client builder:
```kotlin
val client = LlamaStackClientOkHttpClient.builder()
.fromEnv()
.sandbox()
.build()
```
### Error Handling
This library throws exceptions in a single hierarchy for easy handling:
- **`LlamaStackClientException`** - Base exception for all exceptions
- **`LlamaStackClientServiceException`** - HTTP errors with a well-formed response body we were able to parse. The exception message and the `.debuggingRequestId()` will be set by the server.
| 400 | BadRequestException |
| ------ | ----------------------------- |
| 401 | AuthenticationException |
| 403 | PermissionDeniedException |
| 404 | NotFoundException |
| 422 | UnprocessableEntityException |
| 429 | RateLimitException |
| 5xx | InternalServerException |
| others | UnexpectedStatusCodeException |
- **`LlamaStackClientIoException`** - I/O networking errors
- **`LlamaStackClientInvalidDataException`** - any other exceptions on the client side, e.g.:
- We failed to serialize the request body
- We failed to parse the response body (has access to response code and body)
## Reporting Issues
If you encountered any bugs or issues following this guide please file a bug/issue on our [Github issue tracker](https://github.com/meta-llama/llama-stack-client-kotlin/issues).
## Known Issues
We're aware of the following issues and are working to resolve them:
1. Streaming response is a work-in-progress for local and remote inference
2. Due to #1, agents are not supported at the time. LS agents only work in streaming mode
3. Changing to another model is a work in progress for local and remote platforms
## Thanks
We'd like to extend our thanks to the ExecuTorch team for providing their support as we integrated ExecuTorch as one of the local inference distributors for Llama Stack. Checkout [ExecuTorch Github repo](https://github.com/pytorch/executorch/tree/main) for more information.
---
The API interface is generated using the OpenAPI standard with [Stainless](https://www.stainlessapi.com/).

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# iOS SDK
We offer both remote and on-device use of Llama Stack in Swift via a single SDK [llama-stack-client-swift](https://github.com/meta-llama/llama-stack-client-swift/) that contains two components:
1. LlamaStackClient for remote
2. Local Inference for on-device
```{image} ../../../_static/remote_or_local.gif
:alt: Seamlessly switching between local, on-device inference and remote hosted inference
:width: 412px
:align: center
```
## Remote Only
If you don't want to run inference on-device, then you can connect to any hosted Llama Stack distribution with #1.
1. Add `https://github.com/meta-llama/llama-stack-client-swift/` as a Package Dependency in Xcode
2. Add `LlamaStackClient` as a framework to your app target
3. Call an API:
```swift
import LlamaStackClient
let agents = RemoteAgents(url: URL(string: "http://localhost:8321")!)
let request = Components.Schemas.CreateAgentTurnRequest(
agent_id: agentId,
messages: [
.UserMessage(Components.Schemas.UserMessage(
content: .case1("Hello Llama!"),
role: .user
))
],
session_id: self.agenticSystemSessionId,
stream: true
)
for try await chunk in try await agents.createTurn(request: request) {
let payload = chunk.event.payload
// ...
```
Check out [iOSCalendarAssistant](https://github.com/meta-llama/llama-stack-client-swift/tree/main/examples/ios_calendar_assistant) for a complete app demo.
## LocalInference
LocalInference provides a local inference implementation powered by [executorch](https://github.com/pytorch/executorch/).
Llama Stack currently supports on-device inference for iOS with Android coming soon. You can run on-device inference on Android today using [executorch](https://github.com/pytorch/executorch/tree/main/examples/demo-apps/android/LlamaDemo), PyTorchs on-device inference library.
The APIs *work the same as remote*  the only difference is you'll instead use the `LocalAgents` / `LocalInference` classes and pass in a `DispatchQueue`:
```swift
private let runnerQueue = DispatchQueue(label: "org.llamastack.stacksummary")
let inference = LocalInference(queue: runnerQueue)
let agents = LocalAgents(inference: self.inference)
```
Check out [iOSCalendarAssistantWithLocalInf](https://github.com/meta-llama/llama-stack-client-swift/tree/main/examples/ios_calendar_assistant) for a complete app demo.
### Installation
We're working on making LocalInference easier to set up. For now, you'll need to import it via `.xcframework`:
1. Clone the executorch submodule in this repo and its dependencies: `git submodule update --init --recursive`
1. Install [Cmake](https://cmake.org/) for the executorch build`
1. Drag `LocalInference.xcodeproj` into your project
1. Add `LocalInference` as a framework in your app target
### Preparing a model
1. Prepare a `.pte` file [following the executorch docs](https://github.com/pytorch/executorch/blob/main/examples/models/llama/README.md#step-2-prepare-model)
2. Bundle the `.pte` and `tokenizer.model` file into your app
We now support models quantized using SpinQuant and QAT-LoRA which offer a significant performance boost (demo app on iPhone 13 Pro):
| Llama 3.2 1B | Tokens / Second (total) | | Time-to-First-Token (sec) | |
| :---- | :---- | :---- | :---- | :---- |
| | Haiku | Paragraph | Haiku | Paragraph |
| BF16 | 2.2 | 2.5 | 2.3 | 1.9 |
| QAT+LoRA | 7.1 | 3.3 | 0.37 | 0.24 |
| SpinQuant | 10.1 | 5.2 | 0.2 | 0.2 |
### Using LocalInference
1. Instantiate LocalInference with a DispatchQueue. Optionally, pass it into your agents service:
```swift
init () {
runnerQueue = DispatchQueue(label: "org.meta.llamastack")
inferenceService = LocalInferenceService(queue: runnerQueue)
agentsService = LocalAgentsService(inference: inferenceService)
}
```
2. Before making any inference calls, load your model from your bundle:
```swift
let mainBundle = Bundle.main
inferenceService.loadModel(
modelPath: mainBundle.url(forResource: "llama32_1b_spinquant", withExtension: "pte"),
tokenizerPath: mainBundle.url(forResource: "tokenizer", withExtension: "model"),
completion: {_ in } // use to handle load failures
)
```
3. Make inference calls (or agents calls) as you normally would with LlamaStack:
```
for await chunk in try await agentsService.initAndCreateTurn(
messages: [
.UserMessage(Components.Schemas.UserMessage(
content: .case1("Call functions as needed to handle any actions in the following text:\n\n" + text),
role: .user))
]
) {
```
### Troubleshooting
If you receive errors like "missing package product" or "invalid checksum", try cleaning the build folder and resetting the Swift package cache:
(Opt+Click) Product > Clean Build Folder Immediately
```
rm -rf \
~/Library/org.swift.swiftpm \
~/Library/Caches/org.swift.swiftpm \
~/Library/Caches/com.apple.dt.Xcode \
~/Library/Developer/Xcode/DerivedData
```

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# Remote-Hosted Distributions
Remote-Hosted distributions are available endpoints serving Llama Stack API that you can directly connect to.
| Distribution | Endpoint | Inference | Agents | Memory | Safety | Telemetry |
|-------------|----------|-----------|---------|---------|---------|------------|
| Together | [https://llama-stack.together.ai](https://llama-stack.together.ai) | remote::together | meta-reference | remote::weaviate | meta-reference | meta-reference |
| Fireworks | [https://llamastack-preview.fireworks.ai](https://llamastack-preview.fireworks.ai) | remote::fireworks | meta-reference | remote::weaviate | meta-reference | meta-reference |
## Connecting to Remote-Hosted Distributions
You can use `llama-stack-client` to interact with these endpoints. For example, to list the available models served by the Fireworks endpoint:
```bash
$ pip install llama-stack-client
$ llama-stack-client configure --endpoint https://llamastack-preview.fireworks.ai
$ llama-stack-client models list
```
Checkout the [llama-stack-client-python](https://github.com/meta-llama/llama-stack-client-python/blob/main/docs/cli_reference.md) repo for more details on how to use the `llama-stack-client` CLI. Checkout [llama-stack-app](https://github.com/meta-llama/llama-stack-apps/tree/main) for examples applications built on top of Llama Stack.

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---
orphan: true
---
<!-- This file was auto-generated by distro_codegen.py, please edit source -->
# watsonx Distribution
```{toctree}
:maxdepth: 2
:hidden:
self
```
The `llamastack/distribution-watsonx` distribution consists of the following provider configurations.
| API | Provider(s) |
|-----|-------------|
| agents | `inline::meta-reference` |
| datasetio | `remote::huggingface`, `inline::localfs` |
| eval | `inline::meta-reference` |
| inference | `remote::watsonx`, `inline::sentence-transformers` |
| safety | `inline::llama-guard` |
| scoring | `inline::basic`, `inline::llm-as-judge`, `inline::braintrust` |
| telemetry | `inline::meta-reference` |
| tool_runtime | `remote::brave-search`, `remote::tavily-search`, `inline::rag-runtime`, `remote::model-context-protocol` |
| vector_io | `inline::faiss` |
### Environment Variables
The following environment variables can be configured:
- `LLAMASTACK_PORT`: Port for the Llama Stack distribution server (default: `5001`)
- `WATSONX_API_KEY`: watsonx API Key (default: ``)
- `WATSONX_PROJECT_ID`: watsonx Project ID (default: ``)
### Models
The following models are available by default:
- `meta-llama/llama-3-3-70b-instruct (aliases: meta-llama/Llama-3.3-70B-Instruct)`
- `meta-llama/llama-2-13b-chat (aliases: meta-llama/Llama-2-13b)`
- `meta-llama/llama-3-1-70b-instruct (aliases: meta-llama/Llama-3.1-70B-Instruct)`
- `meta-llama/llama-3-1-8b-instruct (aliases: meta-llama/Llama-3.1-8B-Instruct)`
- `meta-llama/llama-3-2-11b-vision-instruct (aliases: meta-llama/Llama-3.2-11B-Vision-Instruct)`
- `meta-llama/llama-3-2-1b-instruct (aliases: meta-llama/Llama-3.2-1B-Instruct)`
- `meta-llama/llama-3-2-3b-instruct (aliases: meta-llama/Llama-3.2-3B-Instruct)`
- `meta-llama/llama-3-2-90b-vision-instruct (aliases: meta-llama/Llama-3.2-90B-Vision-Instruct)`
- `meta-llama/llama-guard-3-11b-vision (aliases: meta-llama/Llama-Guard-3-11B-Vision)`
### Prerequisite: API Keys
Make sure you have access to a watsonx API Key. You can get one by referring [watsonx.ai](https://www.ibm.com/docs/en/masv-and-l/maximo-manage/continuous-delivery?topic=setup-create-watsonx-api-key).
## Running Llama Stack with watsonx
You can do this via venv or Docker which has a pre-built image.
### Via Docker
This method allows you to get started quickly without having to build the distribution code.
```bash
LLAMA_STACK_PORT=5001
docker run \
-it \
-p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
-v ./run.yaml:/root/my-run.yaml \
llamastack/distribution-watsonx \
--config /root/my-run.yaml \
--port $LLAMA_STACK_PORT \
--env WATSONX_API_KEY=$WATSONX_API_KEY \
--env WATSONX_PROJECT_ID=$WATSONX_PROJECT_ID \
--env WATSONX_BASE_URL=$WATSONX_BASE_URL
```

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---
orphan: true
---
# Dell-TGI Distribution
```{toctree}
:maxdepth: 2
:hidden:
self
```
The `llamastack/distribution-tgi` distribution consists of the following provider configurations.
| **API** | **Inference** | **Agents** | **Memory** | **Safety** | **Telemetry** |
|----------------- |--------------- |---------------- |-------------------------------------------------- |---------------- |---------------- |
| **Provider(s)** | remote::tgi | meta-reference | meta-reference, remote::pgvector, remote::chroma | meta-reference | meta-reference |
The only difference vs. the `tgi` distribution is that it runs the Dell-TGI server for inference.
### Start the Distribution (Single Node GPU)
> [!NOTE]
> This assumes you have access to GPU to start a TGI server with access to your GPU.
```
$ cd distributions/dell-tgi/
$ ls
compose.yaml README.md run.yaml
$ docker compose up
```
The script will first start up TGI server, then start up Llama Stack distribution server hooking up to the remote TGI provider for inference. You should be able to see the following outputs --
```
[text-generation-inference] | 2024-10-15T18:56:33.810397Z INFO text_generation_router::server: router/src/server.rs:1813: Using config Some(Llama)
[text-generation-inference] | 2024-10-15T18:56:33.810448Z WARN text_generation_router::server: router/src/server.rs:1960: Invalid hostname, defaulting to 0.0.0.0
[text-generation-inference] | 2024-10-15T18:56:33.864143Z INFO text_generation_router::server: router/src/server.rs:2353: Connected
INFO: Started server process [1]
INFO: Waiting for application startup.
INFO: Application startup complete.
INFO: Uvicorn running on http://[::]:8321 (Press CTRL+C to quit)
```
To kill the server
```
docker compose down
```
### (Alternative) Dell-TGI server + llama stack run (Single Node GPU)
#### Start Dell-TGI server locally
```
docker run -it --pull always --shm-size 1g -p 80:80 --gpus 4 \
-e NUM_SHARD=4
-e MAX_BATCH_PREFILL_TOKENS=32768 \
-e MAX_INPUT_TOKENS=8000 \
-e MAX_TOTAL_TOKENS=8192 \
registry.dell.huggingface.co/enterprise-dell-inference-meta-llama-meta-llama-3.1-8b-instruct
```
#### Start Llama Stack server pointing to TGI server
```
docker run --pull always --network host -it -p 8321:8321 -v ./run.yaml:/root/my-run.yaml --gpus=all llamastack/distribution-tgi --yaml_config /root/my-run.yaml
```
Make sure in you `run.yaml` file, you inference provider is pointing to the correct TGI server endpoint. E.g.
```
inference:
- provider_id: tgi0
provider_type: remote::tgi
config:
url: http://127.0.0.1:5009
```

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---
orphan: true
---
<!-- This file was auto-generated by distro_codegen.py, please edit source -->
# Dell Distribution of Llama Stack
```{toctree}
:maxdepth: 2
:hidden:
self
```
The `llamastack/distribution-dell` distribution consists of the following provider configurations.
| API | Provider(s) |
|-----|-------------|
| agents | `inline::meta-reference` |
| datasetio | `remote::huggingface`, `inline::localfs` |
| eval | `inline::meta-reference` |
| inference | `remote::tgi`, `inline::sentence-transformers` |
| safety | `inline::llama-guard` |
| scoring | `inline::basic`, `inline::llm-as-judge`, `inline::braintrust` |
| telemetry | `inline::meta-reference` |
| tool_runtime | `remote::brave-search`, `remote::tavily-search`, `inline::rag-runtime` |
| vector_io | `inline::faiss`, `remote::chromadb`, `remote::pgvector` |
You can use this distribution if you have GPUs and want to run an independent TGI or Dell Enterprise Hub container for running inference.
### Environment Variables
The following environment variables can be configured:
- `DEH_URL`: URL for the Dell inference server (default: `http://0.0.0.0:8181`)
- `DEH_SAFETY_URL`: URL for the Dell safety inference server (default: `http://0.0.0.0:8282`)
- `CHROMA_URL`: URL for the Chroma server (default: `http://localhost:6601`)
- `INFERENCE_MODEL`: Inference model loaded into the TGI server (default: `meta-llama/Llama-3.2-3B-Instruct`)
- `SAFETY_MODEL`: Name of the safety (Llama-Guard) model to use (default: `meta-llama/Llama-Guard-3-1B`)
## Setting up Inference server using Dell Enterprise Hub's custom TGI container.
NOTE: This is a placeholder to run inference with TGI. This will be updated to use [Dell Enterprise Hub's containers](https://dell.huggingface.co/authenticated/models) once verified.
```bash
export INFERENCE_PORT=8181
export DEH_URL=http://0.0.0.0:$INFERENCE_PORT
export INFERENCE_MODEL=meta-llama/Llama-3.1-8B-Instruct
export CHROMADB_HOST=localhost
export CHROMADB_PORT=6601
export CHROMA_URL=http://$CHROMADB_HOST:$CHROMADB_PORT
export CUDA_VISIBLE_DEVICES=0
export LLAMA_STACK_PORT=8321
docker run --rm -it \
--pull always \
--network host \
-v $HOME/.cache/huggingface:/data \
-e HF_TOKEN=$HF_TOKEN \
-p $INFERENCE_PORT:$INFERENCE_PORT \
--gpus $CUDA_VISIBLE_DEVICES \
ghcr.io/huggingface/text-generation-inference \
--dtype bfloat16 \
--usage-stats off \
--sharded false \
--cuda-memory-fraction 0.7 \
--model-id $INFERENCE_MODEL \
--port $INFERENCE_PORT --hostname 0.0.0.0
```
If you are using Llama Stack Safety / Shield APIs, then you will need to also run another instance of a TGI with a corresponding safety model like `meta-llama/Llama-Guard-3-1B` using a script like:
```bash
export SAFETY_INFERENCE_PORT=8282
export DEH_SAFETY_URL=http://0.0.0.0:$SAFETY_INFERENCE_PORT
export SAFETY_MODEL=meta-llama/Llama-Guard-3-1B
export CUDA_VISIBLE_DEVICES=1
docker run --rm -it \
--pull always \
--network host \
-v $HOME/.cache/huggingface:/data \
-e HF_TOKEN=$HF_TOKEN \
-p $SAFETY_INFERENCE_PORT:$SAFETY_INFERENCE_PORT \
--gpus $CUDA_VISIBLE_DEVICES \
ghcr.io/huggingface/text-generation-inference \
--dtype bfloat16 \
--usage-stats off \
--sharded false \
--cuda-memory-fraction 0.7 \
--model-id $SAFETY_MODEL \
--hostname 0.0.0.0 \
--port $SAFETY_INFERENCE_PORT
```
## Dell distribution relies on ChromaDB for vector database usage
You can start a chroma-db easily using docker.
```bash
# This is where the indices are persisted
mkdir -p $HOME/chromadb
podman run --rm -it \
--network host \
--name chromadb \
-v $HOME/chromadb:/chroma/chroma \
-e IS_PERSISTENT=TRUE \
chromadb/chroma:latest \
--port $CHROMADB_PORT \
--host $CHROMADB_HOST
```
## Running Llama Stack
Now you are ready to run Llama Stack with TGI as the inference provider. You can do this via venv or Docker which has a pre-built image.
### Via Docker
This method allows you to get started quickly without having to build the distribution code.
```bash
docker run -it \
--pull always \
--network host \
-p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
-v $HOME/.llama:/root/.llama \
# NOTE: mount the llama-stack / llama-model directories if testing local changes else not needed
-v /home/hjshah/git/llama-stack:/app/llama-stack-source -v /home/hjshah/git/llama-models:/app/llama-models-source \
# localhost/distribution-dell:dev if building / testing locally
llamastack/distribution-dell\
--port $LLAMA_STACK_PORT \
--env INFERENCE_MODEL=$INFERENCE_MODEL \
--env DEH_URL=$DEH_URL \
--env CHROMA_URL=$CHROMA_URL
```
If you are using Llama Stack Safety / Shield APIs, use:
```bash
# You need a local checkout of llama-stack to run this, get it using
# git clone https://github.com/meta-llama/llama-stack.git
cd /path/to/llama-stack
export SAFETY_INFERENCE_PORT=8282
export DEH_SAFETY_URL=http://0.0.0.0:$SAFETY_INFERENCE_PORT
export SAFETY_MODEL=meta-llama/Llama-Guard-3-1B
docker run \
-it \
--pull always \
-p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
-v $HOME/.llama:/root/.llama \
-v ./llama_stack/distributions/tgi/run-with-safety.yaml:/root/my-run.yaml \
llamastack/distribution-dell \
--config /root/my-run.yaml \
--port $LLAMA_STACK_PORT \
--env INFERENCE_MODEL=$INFERENCE_MODEL \
--env DEH_URL=$DEH_URL \
--env SAFETY_MODEL=$SAFETY_MODEL \
--env DEH_SAFETY_URL=$DEH_SAFETY_URL \
--env CHROMA_URL=$CHROMA_URL
```
### Via venv
Make sure you have done `pip install llama-stack` and have the Llama Stack CLI available.
```bash
llama stack build --distro dell --image-type venv
llama stack run dell
--port $LLAMA_STACK_PORT \
--env INFERENCE_MODEL=$INFERENCE_MODEL \
--env DEH_URL=$DEH_URL \
--env CHROMA_URL=$CHROMA_URL
```
If you are using Llama Stack Safety / Shield APIs, use:
```bash
llama stack run ./run-with-safety.yaml \
--port $LLAMA_STACK_PORT \
--env INFERENCE_MODEL=$INFERENCE_MODEL \
--env DEH_URL=$DEH_URL \
--env SAFETY_MODEL=$SAFETY_MODEL \
--env DEH_SAFETY_URL=$DEH_SAFETY_URL \
--env CHROMA_URL=$CHROMA_URL
```

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@ -0,0 +1,42 @@
---
orphan: true
---
<!-- This file was auto-generated by distro_codegen.py, please edit source -->
# Passthrough Distribution
```{toctree}
:maxdepth: 2
:hidden:
self
```
The `llamastack/distribution-passthrough` distribution consists of the following provider configurations.
| API | Provider(s) |
|-----|-------------|
| agents | `inline::meta-reference` |
| datasetio | `remote::huggingface`, `inline::localfs` |
| eval | `inline::meta-reference` |
| inference | `remote::passthrough`, `inline::sentence-transformers` |
| safety | `inline::llama-guard` |
| scoring | `inline::basic`, `inline::llm-as-judge`, `inline::braintrust` |
| telemetry | `inline::meta-reference` |
| tool_runtime | `remote::brave-search`, `remote::tavily-search`, `remote::wolfram-alpha`, `inline::rag-runtime`, `remote::model-context-protocol` |
| vector_io | `inline::faiss`, `remote::chromadb`, `remote::pgvector` |
### Environment Variables
The following environment variables can be configured:
- `LLAMA_STACK_PORT`: Port for the Llama Stack distribution server (default: `8321`)
- `PASSTHROUGH_API_KEY`: Passthrough API Key (default: ``)
- `PASSTHROUGH_URL`: Passthrough URL (default: ``)
### Models
The following models are available by default:
- `llama3.1-8b-instruct `
- `llama3.2-11b-vision-instruct `

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@ -0,0 +1,232 @@
---
orphan: true
---
<!-- This file was auto-generated by distro_codegen.py, please edit source -->
# Starter Distribution
```{toctree}
:maxdepth: 2
:hidden:
self
```
The `llamastack/distribution-starter` distribution is a comprehensive, multi-provider distribution that includes most of the available inference providers in Llama Stack. It's designed to be a one-stop solution for developers who want to experiment with different AI providers without having to configure each one individually.
## Provider Composition
The starter distribution consists of the following provider configurations:
| API | Provider(s) |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| agents | `inline::meta-reference` |
| datasetio | `remote::huggingface`, `inline::localfs` |
| eval | `inline::meta-reference` |
| files | `inline::localfs` |
| inference | `remote::openai`, `remote::fireworks`, `remote::together`, `remote::ollama`, `remote::anthropic`, `remote::gemini`, `remote::groq`, `remote::sambanova`, `remote::vllm`, `remote::tgi`, `remote::cerebras`, `remote::llama-openai-compat`, `remote::nvidia`, `remote::hf::serverless`, `remote::hf::endpoint`, `inline::sentence-transformers` |
| safety | `inline::llama-guard` |
| scoring | `inline::basic`, `inline::llm-as-judge`, `inline::braintrust` |
| telemetry | `inline::meta-reference` |
| tool_runtime | `remote::brave-search`, `remote::tavily-search`, `inline::rag-runtime`, `remote::model-context-protocol` |
| vector_io | `inline::faiss`, `inline::sqlite-vec`, `inline::milvus`, `remote::chromadb`, `remote::pgvector` |
## Inference Providers
The starter distribution includes a comprehensive set of inference providers:
### Hosted Providers
- **[OpenAI](https://openai.com/api/)**: GPT-4, GPT-3.5, O1, O3, O4 models and text embeddings -
provider ID: `openai` - reference documentation: [openai](../../providers/inference/remote_openai.md)
- **[Fireworks](https://fireworks.ai/)**: Llama 3.1, 3.2, 3.3, 4 Scout, 4 Maverick models and
embeddings - provider ID: `fireworks` - reference documentation: [fireworks](../../providers/inference/remote_fireworks.md)
- **[Together](https://together.ai/)**: Llama 3.1, 3.2, 3.3, 4 Scout, 4 Maverick models and
embeddings - provider ID: `together` - reference documentation: [together](../../providers/inference/remote_together.md)
- **[Anthropic](https://www.anthropic.com/)**: Claude 3.5 Sonnet, Claude 3.7 Sonnet, Claude 3.5 Haiku, and Voyage embeddings - provider ID: `anthropic` - reference documentation: [anthropic](../../providers/inference/remote_anthropic.md)
- **[Gemini](https://gemini.google.com/)**: Gemini 1.5, 2.0, 2.5 models and text embeddings - provider ID: `gemini` - reference documentation: [gemini](../../providers/inference/remote_gemini.md)
- **[Groq](https://groq.com/)**: Fast Llama models (3.1, 3.2, 3.3, 4 Scout, 4 Maverick) - provider ID: `groq` - reference documentation: [groq](../../providers/inference/remote_groq.md)
- **[SambaNova](https://www.sambanova.ai/)**: Llama 3.1, 3.2, 3.3, 4 Scout, 4 Maverick models - provider ID: `sambanova` - reference documentation: [sambanova](../../providers/inference/remote_sambanova.md)
- **[Cerebras](https://www.cerebras.ai/)**: Cerebras AI models - provider ID: `cerebras` - reference documentation: [cerebras](../../providers/inference/remote_cerebras.md)
- **[NVIDIA](https://www.nvidia.com/)**: NVIDIA NIM - provider ID: `nvidia` - reference documentation: [nvidia](../../providers/inference/remote_nvidia.md)
- **[HuggingFace](https://huggingface.co/)**: Serverless and endpoint models - provider ID: `hf::serverless` and `hf::endpoint` - reference documentation: [huggingface-serverless](../../providers/inference/remote_hf_serverless.md) and [huggingface-endpoint](../../providers/inference/remote_hf_endpoint.md)
- **[Bedrock](https://aws.amazon.com/bedrock/)**: AWS Bedrock models - provider ID: `bedrock` - reference documentation: [bedrock](../../providers/inference/remote_bedrock.md)
### Local/Remote Providers
- **[Ollama](https://ollama.ai/)**: Local Ollama models - provider ID: `ollama` - reference documentation: [ollama](../../providers/inference/remote_ollama.md)
- **[vLLM](https://docs.vllm.ai/en/latest/)**: Local or remote vLLM server - provider ID: `vllm` - reference documentation: [vllm](../../providers/inference/remote_vllm.md)
- **[TGI](https://github.com/huggingface/text-generation-inference)**: Text Generation Inference server - Dell Enterprise Hub's custom TGI container too (use `DEH_URL`) - provider ID: `tgi` - reference documentation: [tgi](../../providers/inference/remote_tgi.md)
- **[Sentence Transformers](https://www.sbert.net/)**: Local embedding models - provider ID: `sentence-transformers` - reference documentation: [sentence-transformers](../../providers/inference/inline_sentence-transformers.md)
All providers are disabled by default. So you need to enable them by setting the environment variables.
## Vector IO
The starter distribution includes a comprehensive set of vector IO providers:
- **[FAISS](https://github.com/facebookresearch/faiss)**: Local FAISS vector store - enabled by
default - provider ID: `faiss`
- **[SQLite](https://www.sqlite.org/index.html)**: Local SQLite vector store - disabled by default - provider ID: `sqlite-vec`
- **[ChromaDB](https://www.trychroma.com/)**: Remote ChromaDB vector store - disabled by default - provider ID: `chromadb`
- **[PGVector](https://github.com/pgvector/pgvector)**: PostgreSQL vector store - disabled by default - provider ID: `pgvector`
- **[Milvus](https://milvus.io/)**: Milvus vector store - disabled by default - provider ID: `milvus`
## Environment Variables
The following environment variables can be configured:
### Server Configuration
- `LLAMA_STACK_PORT`: Port for the Llama Stack distribution server (default: `8321`)
### API Keys for Hosted Providers
- `OPENAI_API_KEY`: OpenAI API key
- `FIREWORKS_API_KEY`: Fireworks API key
- `TOGETHER_API_KEY`: Together API key
- `ANTHROPIC_API_KEY`: Anthropic API key
- `GEMINI_API_KEY`: Google Gemini API key
- `GROQ_API_KEY`: Groq API key
- `SAMBANOVA_API_KEY`: SambaNova API key
- `CEREBRAS_API_KEY`: Cerebras API key
- `LLAMA_API_KEY`: Llama API key
- `NVIDIA_API_KEY`: NVIDIA API key
- `HF_API_TOKEN`: HuggingFace API token
### Local Provider Configuration
- `OLLAMA_URL`: Ollama server URL (default: `http://localhost:11434`)
- `VLLM_URL`: vLLM server URL (default: `http://localhost:8000/v1`)
- `VLLM_MAX_TOKENS`: vLLM max tokens (default: `4096`)
- `VLLM_API_TOKEN`: vLLM API token (default: `fake`)
- `VLLM_TLS_VERIFY`: vLLM TLS verification (default: `true`)
- `TGI_URL`: TGI server URL
### Model Configuration
- `INFERENCE_MODEL`: HuggingFace model for serverless inference
- `INFERENCE_ENDPOINT_NAME`: HuggingFace endpoint name
### Vector Database Configuration
- `SQLITE_STORE_DIR`: SQLite store directory (default: `~/.llama/distributions/starter`)
- `ENABLE_SQLITE_VEC`: Enable SQLite vector provider
- `ENABLE_CHROMADB`: Enable ChromaDB provider
- `ENABLE_PGVECTOR`: Enable PGVector provider
- `CHROMADB_URL`: ChromaDB server URL
- `PGVECTOR_HOST`: PGVector host (default: `localhost`)
- `PGVECTOR_PORT`: PGVector port (default: `5432`)
- `PGVECTOR_DB`: PGVector database name
- `PGVECTOR_USER`: PGVector username
- `PGVECTOR_PASSWORD`: PGVector password
### Tool Configuration
- `BRAVE_SEARCH_API_KEY`: Brave Search API key
- `TAVILY_SEARCH_API_KEY`: Tavily Search API key
### Telemetry Configuration
- `OTEL_SERVICE_NAME`: OpenTelemetry service name
- `TELEMETRY_SINKS`: Telemetry sinks (default: `console,sqlite`)
## Enabling Providers
You can enable specific providers by setting appropriate environment variables. For example,
```bash
# self-hosted
export OLLAMA_URL=http://localhost:11434 # enables the Ollama inference provider
export VLLM_URL=http://localhost:8000/v1 # enables the vLLM inference provider
export TGI_URL=http://localhost:8000/v1 # enables the TGI inference provider
# cloud-hosted requiring API key configuration on the server
export CEREBRAS_API_KEY=your_cerebras_api_key # enables the Cerebras inference provider
export NVIDIA_API_KEY=your_nvidia_api_key # enables the NVIDIA inference provider
# vector providers
export MILVUS_URL=http://localhost:19530 # enables the Milvus vector provider
export CHROMADB_URL=http://localhost:8000/v1 # enables the ChromaDB vector provider
export PGVECTOR_DB=llama_stack_db # enables the PGVector vector provider
```
This distribution comes with a default "llama-guard" shield that can be enabled by setting the `SAFETY_MODEL` environment variable to point to an appropriate Llama Guard model id. Use `llama-stack-client models list` to see the list of available models.
## Running the Distribution
You can run the starter distribution via Docker or venv.
### Via Docker
This method allows you to get started quickly without having to build the distribution code.
```bash
LLAMA_STACK_PORT=8321
docker run \
-it \
--pull always \
-p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
-e OPENAI_API_KEY=your_openai_key \
-e FIREWORKS_API_KEY=your_fireworks_key \
-e TOGETHER_API_KEY=your_together_key \
llamastack/distribution-starter \
--port $LLAMA_STACK_PORT
```
### Via venv
Ensure you have configured the starter distribution using the environment variables explained above.
```bash
uv run --with llama-stack llama stack build --distro starter --image-type venv --run
```
## Example Usage
Once the distribution is running, you can use any of the available models. Here are some examples:
### Using OpenAI Models
```bash
llama-stack-client --endpoint http://localhost:8321 \
inference chat-completion \
--model-id openai/gpt-4o \
--message "Hello, how are you?"
```
### Using Fireworks Models
```bash
llama-stack-client --endpoint http://localhost:8321 \
inference chat-completion \
--model-id fireworks/meta-llama/Llama-3.2-3B-Instruct \
--message "Write a short story about a robot."
```
### Using Local Ollama Models
```bash
# First, make sure Ollama is running and you have a model
ollama run llama3.2:3b
# Then use it through Llama Stack
export OLLAMA_INFERENCE_MODEL=llama3.2:3b
llama-stack-client --endpoint http://localhost:8321 \
inference chat-completion \
--model-id ollama/llama3.2:3b \
--message "Explain quantum computing in simple terms."
```
## Storage
The starter distribution uses SQLite for local storage of various components:
- **Metadata store**: `~/.llama/distributions/starter/registry.db`
- **Inference store**: `~/.llama/distributions/starter/inference_store.db`
- **FAISS store**: `~/.llama/distributions/starter/faiss_store.db`
- **SQLite vector store**: `~/.llama/distributions/starter/sqlite_vec.db`
- **Files metadata**: `~/.llama/distributions/starter/files_metadata.db`
- **Agents store**: `~/.llama/distributions/starter/agents_store.db`
- **Responses store**: `~/.llama/distributions/starter/responses_store.db`
- **Trace store**: `~/.llama/distributions/starter/trace_store.db`
- **Evaluation store**: `~/.llama/distributions/starter/meta_reference_eval.db`
- **Dataset I/O stores**: Various HuggingFace and local filesystem stores
## Benefits of the Starter Distribution
1. **Comprehensive Coverage**: Includes most popular AI providers in one distribution
2. **Flexible Configuration**: Easy to enable/disable providers based on your needs
3. **No Local GPU Required**: Most providers are cloud-based, making it accessible to developers without high-end hardware
4. **Easy Migration**: Start with hosted providers and gradually move to local ones as needed
5. **Production Ready**: Includes safety, evaluation, and telemetry components
6. **Tool Integration**: Comes with web search, RAG, and model context protocol tools
The starter distribution is ideal for developers who want to experiment with different AI providers, build prototypes quickly, or create applications that can work with multiple AI backends.

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---
title: Starting a Llama Stack Server
description: Different ways to run Llama Stack servers - as library, container, or Kubernetes deployment
sidebar_label: Starting Llama Stack Server
sidebar_position: 7
---
# Starting a Llama Stack Server
You can run a Llama Stack server in one of the following ways:
## As a Library:
This is the simplest way to get started. Using Llama Stack as a library means you do not need to start a server. This is especially useful when you are not running inference locally and relying on an external inference service (eg. fireworks, together, groq, etc.) See [Using Llama Stack as a Library](importing_as_library)
## Container:
Another simple way to start interacting with Llama Stack is to just spin up a container (via Docker or Podman) which is pre-built with all the providers you need. We provide a number of pre-built images so you can start a Llama Stack server instantly. You can also build your own custom container. Which distribution to choose depends on the hardware you have. See [Selection of a Distribution](selection) for more details.
## Kubernetes:
If you have built a container image and want to deploy it in a Kubernetes cluster instead of starting the Llama Stack server locally. See [Kubernetes Deployment Guide](kubernetes_deployment) for more details.
```{toctree}
:maxdepth: 1
:hidden:
importing_as_library
configuration
```

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@ -0,0 +1,68 @@
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
from llama_stack_client import Agent, AgentEventLogger, RAGDocument, LlamaStackClient
vector_db_id = "my_demo_vector_db"
client = LlamaStackClient(base_url="http://localhost:8321")
models = client.models.list()
# Select the first LLM and first embedding models
model_id = next(m for m in models if m.model_type == "llm").identifier
embedding_model_id = (
em := next(m for m in models if m.model_type == "embedding")
).identifier
embedding_dimension = em.metadata["embedding_dimension"]
vector_db = client.vector_dbs.register(
vector_db_id=vector_db_id,
embedding_model=embedding_model_id,
embedding_dimension=embedding_dimension,
provider_id="faiss",
)
vector_db_id = vector_db.identifier
source = "https://www.paulgraham.com/greatwork.html"
print("rag_tool> Ingesting document:", source)
document = RAGDocument(
document_id="document_1",
content=source,
mime_type="text/html",
metadata={},
)
client.tool_runtime.rag_tool.insert(
documents=[document],
vector_db_id=vector_db_id,
chunk_size_in_tokens=100,
)
agent = Agent(
client,
model=model_id,
instructions="You are a helpful assistant",
tools=[
{
"name": "builtin::rag/knowledge_search",
"args": {"vector_db_ids": [vector_db_id]},
}
],
)
prompt = "How do you do great work?"
print("prompt>", prompt)
use_stream = True
response = agent.create_turn(
messages=[{"role": "user", "content": prompt}],
session_id=agent.create_session("rag_session"),
stream=use_stream,
)
# Only call `AgentEventLogger().log(response)` for streaming responses.
if use_stream:
for log in AgentEventLogger().log(response):
log.print()
else:
print(response)

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---
title: Detailed Tutorial
description: Complete guide to using Llama Stack server and client SDK to build AI agents
sidebar_label: Detailed Tutorial
sidebar_position: 3
---
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
## Detailed Tutorial
In this guide, we'll walk through how you can use the Llama Stack (server and client SDK) to test a simple agent.
A Llama Stack agent is a simple integrated system that can perform tasks by combining a Llama model for reasoning with
tools (e.g., RAG, web search, code execution, etc.) for taking actions.
In Llama Stack, we provide a server exposing multiple APIs. These APIs are backed by implementations from different providers.
Llama Stack is a stateful service with REST APIs to support seamless transition of AI applications across different environments. The server can be run in a variety of ways, including as a standalone binary, Docker container, or hosted service. You can build and test using a local server first and deploy to a hosted endpoint for production.
In this guide, we'll walk through how to build a RAG agent locally using Llama Stack with [Ollama](https://ollama.com/)
as the inference [provider](../providers/index.md#inference) for a Llama Model.
### Step 1: Installation and Setup
Install Ollama by following the instructions on the [Ollama website](https://ollama.com/download), then
download Llama 3.2 3B model, and then start the Ollama service.
```bash
ollama pull llama3.2:3b
ollama run llama3.2:3b --keepalive 60m
```
Install [uv](https://docs.astral.sh/uv/) to setup your virtual environment
::::{tab-set}
:::{tab-item} macOS and Linux
Use `curl` to download the script and execute it with `sh`:
```console
curl -LsSf https://astral.sh/uv/install.sh | sh
```
:::
:::{tab-item} Windows
Use `irm` to download the script and execute it with `iex`:
```console
powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
```
:::
::::
Setup your virtual environment.
```bash
uv sync --python 3.12
source .venv/bin/activate
```
### Step 2: Run Llama Stack
Llama Stack is a server that exposes multiple APIs, you connect with it using the Llama Stack client SDK.
::::{tab-set}
:::{tab-item} Using `venv`
You can use Python to build and run the Llama Stack server, which is useful for testing and development.
Llama Stack uses a [YAML configuration file](../distributions/configuration.md) to specify the stack setup,
which defines the providers and their settings. The generated configuration serves as a starting point that you can [customize for your specific needs](../distributions/customizing_run_yaml.md).
Now let's build and run the Llama Stack config for Ollama.
We use `starter` as template. By default all providers are disabled, this requires enable ollama by passing environment variables.
```bash
llama stack build --distro starter --image-type venv --run
```
:::
:::{tab-item} Using `venv`
You can use Python to build and run the Llama Stack server, which is useful for testing and development.
Llama Stack uses a [YAML configuration file](../distributions/configuration.md) to specify the stack setup,
which defines the providers and their settings.
Now let's build and run the Llama Stack config for Ollama.
```bash
llama stack build --distro starter --image-type venv --run
```
:::
:::{tab-item} Using a Container
You can use a container image to run the Llama Stack server. We provide several container images for the server
component that works with different inference providers out of the box. For this guide, we will use
`llamastack/distribution-starter` as the container image. If you'd like to build your own image or customize the
configurations, please check out [this guide](../distributions/building_distro.md).
First lets setup some environment variables and create a local directory to mount into the containers file system.
```bash
export LLAMA_STACK_PORT=8321
mkdir -p ~/.llama
```
Then start the server using the container tool of your choice. For example, if you are running Docker you can use the
following command:
```bash
docker run -it \
--pull always \
-p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
-v ~/.llama:/root/.llama \
llamastack/distribution-starter \
--port $LLAMA_STACK_PORT \
--env OLLAMA_URL=http://host.docker.internal:11434
```
Note to start the container with Podman, you can do the same but replace `docker` at the start of the command with
`podman`. If you are using `podman` older than `4.7.0`, please also replace `host.docker.internal` in the `OLLAMA_URL`
with `host.containers.internal`.
The configuration YAML for the Ollama distribution is available at `distributions/ollama/run.yaml`.
```{tip}
Docker containers run in their own isolated network namespaces on Linux. To allow the container to communicate with services running on the host via `localhost`, you need `--network=host`. This makes the container use the hosts network directly so it can connect to Ollama running on `localhost:11434`.
Linux users having issues running the above command should instead try the following:
```bash
docker run -it \
--pull always \
-p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
-v ~/.llama:/root/.llama \
--network=host \
llamastack/distribution-starter \
--port $LLAMA_STACK_PORT \
--env OLLAMA_URL=http://localhost:11434
```
:::
::::
You will see output like below:
```
INFO: Application startup complete.
INFO: Uvicorn running on http://['::', '0.0.0.0']:8321 (Press CTRL+C to quit)
```
Now you can use the Llama Stack client to run inference and build agents!
You can reuse the server setup or use the [Llama Stack Client](https://github.com/meta-llama/llama-stack-client-python/).
Note that the client package is already included in the `llama-stack` package.
### Step 3: Run Client CLI
Open a new terminal and navigate to the same directory you started the server from. Then set up a new or activate your
existing server virtual environment.
::::{tab-set}
:::{tab-item} Reuse Server `venv`
```bash
# The client is included in the llama-stack package so we just activate the server venv
source .venv/bin/activate
```
:::
:::{tab-item} Install with `venv`
```bash
uv venv client --python 3.12
source client/bin/activate
pip install llama-stack-client
```
:::
::::
Now let's use the `llama-stack-client` [CLI](../references/llama_stack_client_cli_reference.md) to check the
connectivity to the server.
```bash
llama-stack-client configure --endpoint http://localhost:8321 --api-key none
```
You will see the below:
```
Done! You can now use the Llama Stack Client CLI with endpoint http://localhost:8321
```
List the models
```bash
llama-stack-client models list
Available Models
┏━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━┓
┃ model_type ┃ identifier ┃ provider_resource_id ┃ metadata ┃ provider_id ┃
┡━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━┩
│ embedding │ ollama/all-minilm:l6-v2 │ all-minilm:l6-v2 │ {'embedding_dimension': 384.0} │ ollama │
├─────────────────┼─────────────────────────────────────┼─────────────────────────────────────┼───────────────────────────────────────────┼───────────────────────┤
│ ... │ ... │ ... │ │ ... │
├─────────────────┼─────────────────────────────────────┼─────────────────────────────────────┼───────────────────────────────────────────┼───────────────────────┤
│ llm │ ollama/Llama-3.2:3b │ llama3.2:3b │ │ ollama │
└─────────────────┴─────────────────────────────────────┴─────────────────────────────────────┴───────────────────────────────────────────┴───────────────────────┘
```
You can test basic Llama inference completion using the CLI.
```bash
llama-stack-client inference chat-completion --model-id "ollama/llama3.2:3b" --message "tell me a joke"
```
Sample output:
```python
OpenAIChatCompletion(
id="chatcmpl-08d7b2be-40f3-47ed-8f16-a6f29f2436af",
choices=[
OpenAIChatCompletionChoice(
finish_reason="stop",
index=0,
message=OpenAIChatCompletionChoiceMessageOpenAIAssistantMessageParam(
role="assistant",
content="Why couldn't the bicycle stand up by itself?\n\nBecause it was two-tired.",
name=None,
tool_calls=None,
refusal=None,
annotations=None,
audio=None,
function_call=None,
),
logprobs=None,
)
],
created=1751725254,
model="llama3.2:3b",
object="chat.completion",
service_tier=None,
system_fingerprint="fp_ollama",
usage={
"completion_tokens": 18,
"prompt_tokens": 29,
"total_tokens": 47,
"completion_tokens_details": None,
"prompt_tokens_details": None,
},
)
```
### Step 4: Run the Demos
Note that these demos show the [Python Client SDK](../references/python_sdk_reference/index.md).
Other SDKs are also available, please refer to the [Client SDK](../index.md#client-sdks) list for the complete options.
::::{tab-set}
:::{tab-item} Basic Inference
Now you can run inference using the Llama Stack client SDK.
#### i. Create the Script
Create a file `inference.py` and add the following code:
```python
from llama_stack_client import LlamaStackClient
client = LlamaStackClient(base_url="http://localhost:8321")
# List available models
models = client.models.list()
# Select the first LLM
llm = next(m for m in models if m.model_type == "llm" and m.provider_id == "ollama")
model_id = llm.identifier
print("Model:", model_id)
response = client.chat.completions.create(
model=model_id,
messages=[
{"role": "system", "content": "You are a helpful assistant."},
{"role": "user", "content": "Write a haiku about coding"},
],
)
print(response)
```
#### ii. Run the Script
Let's run the script using `uv`
```bash
uv run python inference.py
```
Which will output:
```
Model: ollama/llama3.2:3b
OpenAIChatCompletion(id='chatcmpl-30cd0f28-a2ad-4b6d-934b-13707fc60ebf', choices=[OpenAIChatCompletionChoice(finish_reason='stop', index=0, message=OpenAIChatCompletionChoiceMessageOpenAIAssistantMessageParam(role='assistant', content="Lines of code unfold\nAlgorithms dance with ease\nLogic's gentle kiss", name=None, tool_calls=None, refusal=None, annotations=None, audio=None, function_call=None), logprobs=None)], created=1751732480, model='llama3.2:3b', object='chat.completion', service_tier=None, system_fingerprint='fp_ollama', usage={'completion_tokens': 16, 'prompt_tokens': 37, 'total_tokens': 53, 'completion_tokens_details': None, 'prompt_tokens_details': None})
```
:::
:::{tab-item} Build a Simple Agent
Next we can move beyond simple inference and build an agent that can perform tasks using the Llama Stack server.
#### i. Create the Script
Create a file `agent.py` and add the following code:
```python
from llama_stack_client import LlamaStackClient
from llama_stack_client import Agent, AgentEventLogger
from rich.pretty import pprint
import uuid
client = LlamaStackClient(base_url=f"http://localhost:8321")
models = client.models.list()
llm = next(m for m in models if m.model_type == "llm" and m.provider_id == "ollama")
model_id = llm.identifier
agent = Agent(client, model=model_id, instructions="You are a helpful assistant.")
s_id = agent.create_session(session_name=f"s{uuid.uuid4().hex}")
print("Non-streaming ...")
response = agent.create_turn(
messages=[{"role": "user", "content": "Who are you?"}],
session_id=s_id,
stream=False,
)
print("agent>", response.output_message.content)
print("Streaming ...")
stream = agent.create_turn(
messages=[{"role": "user", "content": "Who are you?"}], session_id=s_id, stream=True
)
for event in stream:
pprint(event)
print("Streaming with print helper...")
stream = agent.create_turn(
messages=[{"role": "user", "content": "Who are you?"}], session_id=s_id, stream=True
)
for event in AgentEventLogger().log(stream):
event.print()
```
### ii. Run the Script
Let's run the script using `uv`
```bash
uv run python agent.py
```
```{dropdown} 👋 Click here to see the sample output
Non-streaming ...
agent> I'm an artificial intelligence designed to assist and communicate with users like you. I don't have a personal identity, but I can provide information, answer questions, and help with tasks to the best of my abilities.
I'm a large language model, which means I've been trained on a massive dataset of text from various sources, allowing me to understand and respond to a wide range of topics and questions. My purpose is to provide helpful and accurate information, and I'm constantly learning and improving my responses based on the interactions I have with users like you.
I can help with:
* Answering questions on various subjects
* Providing definitions and explanations
* Offering suggestions and ideas
* Assisting with language-related tasks, such as proofreading and editing
* Generating text and content
* And more!
Feel free to ask me anything, and I'll do my best to help!
Streaming ...
AgentTurnResponseStreamChunk(
│ event=TurnResponseEvent(
│ │ payload=AgentTurnResponseStepStartPayload(
│ │ │ event_type='step_start',
│ │ │ step_id='69831607-fa75-424a-949b-e2049e3129d1',
│ │ │ step_type='inference',
│ │ │ metadata={}
│ │ )
│ )
)
AgentTurnResponseStreamChunk(
│ event=TurnResponseEvent(
│ │ payload=AgentTurnResponseStepProgressPayload(
│ │ │ delta=TextDelta(text='As', type='text'),
│ │ │ event_type='step_progress',
│ │ │ step_id='69831607-fa75-424a-949b-e2049e3129d1',
│ │ │ step_type='inference'
│ │ )
│ )
)
AgentTurnResponseStreamChunk(
│ event=TurnResponseEvent(
│ │ payload=AgentTurnResponseStepProgressPayload(
│ │ │ delta=TextDelta(text=' a', type='text'),
│ │ │ event_type='step_progress',
│ │ │ step_id='69831607-fa75-424a-949b-e2049e3129d1',
│ │ │ step_type='inference'
│ │ )
│ )
)
...
AgentTurnResponseStreamChunk(
│ event=TurnResponseEvent(
│ │ payload=AgentTurnResponseStepCompletePayload(
│ │ │ event_type='step_complete',
│ │ │ step_details=InferenceStep(
│ │ │ │ api_model_response=CompletionMessage(
│ │ │ │ │ content='As a conversational AI, I don\'t have a personal identity in the classical sense. I exist as a program running on computer servers, designed to process and respond to text-based inputs.\n\nI\'m an instance of a type of artificial intelligence called a "language model," which is trained on vast amounts of text data to generate human-like responses. My primary function is to understand and respond to natural language inputs, like our conversation right now.\n\nThink of me as a virtual assistant, a chatbot, or a conversational interface I\'m here to provide information, answer questions, and engage in conversation to the best of my abilities. I don\'t have feelings, emotions, or consciousness like humans do, but I\'m designed to simulate human-like interactions to make our conversations feel more natural and helpful.\n\nSo, that\'s me in a nutshell! What can I help you with today?',
│ │ │ │ │ role='assistant',
│ │ │ │ │ stop_reason='end_of_turn',
│ │ │ │ │ tool_calls=[]
│ │ │ │ ),
│ │ │ │ step_id='69831607-fa75-424a-949b-e2049e3129d1',
│ │ │ │ step_type='inference',
│ │ │ │ turn_id='8b360202-f7cb-4786-baa9-166a1b46e2ca',
│ │ │ │ completed_at=datetime.datetime(2025, 4, 3, 1, 15, 21, 716174, tzinfo=TzInfo(UTC)),
│ │ │ │ started_at=datetime.datetime(2025, 4, 3, 1, 15, 14, 28823, tzinfo=TzInfo(UTC))
│ │ │ ),
│ │ │ step_id='69831607-fa75-424a-949b-e2049e3129d1',
│ │ │ step_type='inference'
│ │ )
│ )
)
AgentTurnResponseStreamChunk(
│ event=TurnResponseEvent(
│ │ payload=AgentTurnResponseTurnCompletePayload(
│ │ │ event_type='turn_complete',
│ │ │ turn=Turn(
│ │ │ │ input_messages=[UserMessage(content='Who are you?', role='user', context=None)],
│ │ │ │ output_message=CompletionMessage(
│ │ │ │ │ content='As a conversational AI, I don\'t have a personal identity in the classical sense. I exist as a program running on computer servers, designed to process and respond to text-based inputs.\n\nI\'m an instance of a type of artificial intelligence called a "language model," which is trained on vast amounts of text data to generate human-like responses. My primary function is to understand and respond to natural language inputs, like our conversation right now.\n\nThink of me as a virtual assistant, a chatbot, or a conversational interface I\'m here to provide information, answer questions, and engage in conversation to the best of my abilities. I don\'t have feelings, emotions, or consciousness like humans do, but I\'m designed to simulate human-like interactions to make our conversations feel more natural and helpful.\n\nSo, that\'s me in a nutshell! What can I help you with today?',
│ │ │ │ │ role='assistant',
│ │ │ │ │ stop_reason='end_of_turn',
│ │ │ │ │ tool_calls=[]
│ │ │ │ ),
│ │ │ │ session_id='abd4afea-4324-43f4-9513-cfe3970d92e8',
│ │ │ │ started_at=datetime.datetime(2025, 4, 3, 1, 15, 14, 28722, tzinfo=TzInfo(UTC)),
│ │ │ │ steps=[
│ │ │ │ │ InferenceStep(
│ │ │ │ │ │ api_model_response=CompletionMessage(
│ │ │ │ │ │ │ content='As a conversational AI, I don\'t have a personal identity in the classical sense. I exist as a program running on computer servers, designed to process and respond to text-based inputs.\n\nI\'m an instance of a type of artificial intelligence called a "language model," which is trained on vast amounts of text data to generate human-like responses. My primary function is to understand and respond to natural language inputs, like our conversation right now.\n\nThink of me as a virtual assistant, a chatbot, or a conversational interface I\'m here to provide information, answer questions, and engage in conversation to the best of my abilities. I don\'t have feelings, emotions, or consciousness like humans do, but I\'m designed to simulate human-like interactions to make our conversations feel more natural and helpful.\n\nSo, that\'s me in a nutshell! What can I help you with today?',
│ │ │ │ │ │ │ role='assistant',
│ │ │ │ │ │ │ stop_reason='end_of_turn',
│ │ │ │ │ │ │ tool_calls=[]
│ │ │ │ │ │ ),
│ │ │ │ │ │ step_id='69831607-fa75-424a-949b-e2049e3129d1',
│ │ │ │ │ │ step_type='inference',
│ │ │ │ │ │ turn_id='8b360202-f7cb-4786-baa9-166a1b46e2ca',
│ │ │ │ │ │ completed_at=datetime.datetime(2025, 4, 3, 1, 15, 21, 716174, tzinfo=TzInfo(UTC)),
│ │ │ │ │ │ started_at=datetime.datetime(2025, 4, 3, 1, 15, 14, 28823, tzinfo=TzInfo(UTC))
│ │ │ │ │ )
│ │ │ │ ],
│ │ │ │ turn_id='8b360202-f7cb-4786-baa9-166a1b46e2ca',
│ │ │ │ completed_at=datetime.datetime(2025, 4, 3, 1, 15, 21, 727364, tzinfo=TzInfo(UTC)),
│ │ │ │ output_attachments=[]
│ │ │ )
│ │ )
│ )
)
Streaming with print helper...
inference> Déjà vu! You're asking me again!
As I mentioned earlier, I'm a computer program designed to simulate conversation and answer questions. I don't have a personal identity or consciousness like a human would. I exist solely as a digital entity, running on computer servers and responding to inputs from users like you.
I'm a type of artificial intelligence (AI) called a large language model, which means I've been trained on a massive dataset of text from various sources. This training allows me to understand and respond to a wide range of questions and topics.
My purpose is to provide helpful and accurate information, answer questions, and assist users like you with tasks and conversations. I don't have personal preferences, emotions, or opinions like humans do. My goal is to be informative, neutral, and respectful in my responses.
So, that's me in a nutshell!
```
:::
:::{tab-item} Build a RAG Agent
For our last demo, we can build a RAG agent that can answer questions about the Torchtune project using the documents
in a vector database.
#### i. Create the Script
Create a file `rag_agent.py` and add the following code:
```python
from llama_stack_client import LlamaStackClient
from llama_stack_client import Agent, AgentEventLogger
from llama_stack_client.types import Document
import uuid
client = LlamaStackClient(base_url="http://localhost:8321")
# Create a vector database instance
embed_lm = next(m for m in client.models.list() if m.model_type == "embedding")
embedding_model = embed_lm.identifier
vector_db_id = f"v{uuid.uuid4().hex}"
# The VectorDB API is deprecated; the server now returns its own authoritative ID.
# We capture the correct ID from the response's .identifier attribute.
vector_db_id = client.vector_dbs.register(
vector_db_id=vector_db_id,
embedding_model=embedding_model,
).identifier
# Create Documents
urls = [
"memory_optimizations.rst",
"chat.rst",
"llama3.rst",
"qat_finetune.rst",
"lora_finetune.rst",
]
documents = [
Document(
document_id=f"num-{i}",
content=f"https://raw.githubusercontent.com/pytorch/torchtune/main/docs/source/tutorials/{url}",
mime_type="text/plain",
metadata={},
)
for i, url in enumerate(urls)
]
# Insert documents
client.tool_runtime.rag_tool.insert(
documents=documents,
vector_db_id=vector_db_id,
chunk_size_in_tokens=512,
)
# Get the model being served
llm = next(
m
for m in client.models.list()
if m.model_type == "llm" and m.provider_id == "ollama"
)
model = llm.identifier
# Create the RAG agent
rag_agent = Agent(
client,
model=model,
instructions="You are a helpful assistant. Use the RAG tool to answer questions as needed.",
tools=[
{
"name": "builtin::rag/knowledge_search",
"args": {"vector_db_ids": [vector_db_id]},
}
],
)
session_id = rag_agent.create_session(session_name=f"s{uuid.uuid4().hex}")
turns = ["what is torchtune", "tell me about dora"]
for t in turns:
print("user>", t)
stream = rag_agent.create_turn(
messages=[{"role": "user", "content": t}], session_id=session_id, stream=True
)
for event in AgentEventLogger().log(stream):
event.print()
```
#### ii. Run the Script
Let's run the script using `uv`
```bash
uv run python rag_agent.py
```
```{dropdown} 👋 Click here to see the sample output
user> what is torchtune
inference> [knowledge_search(query='TorchTune')]
tool_execution> Tool:knowledge_search Args:{'query': 'TorchTune'}
tool_execution> Tool:knowledge_search Response:[TextContentItem(text='knowledge_search tool found 5 chunks:\nBEGIN of knowledge_search tool results.\n', type='text'), TextContentItem(text='Result 1:\nDocument_id:num-1\nContent: conversational data, :func:`~torchtune.datasets.chat_dataset` seems to be a good fit. ..., type='text'), TextContentItem(text='END of knowledge_search tool results.\n', type='text')]
inference> Here is a high-level overview of the text:
**LoRA Finetuning with PyTorch Tune**
PyTorch Tune provides a recipe for LoRA (Low-Rank Adaptation) finetuning, which is a technique to adapt pre-trained models to new tasks. The recipe uses the `lora_finetune_distributed` command.
...
Overall, DORA is a powerful reinforcement learning algorithm that can learn complex tasks from human demonstrations. However, it requires careful consideration of the challenges and limitations to achieve optimal results.
```
:::
::::
**You're Ready to Build Your Own Apps!**
Congrats! 🥳 Now you're ready to [build your own Llama Stack applications](../building_applications/index)! 🚀

View file

@ -0,0 +1,16 @@
---
description: We have a number of client-side SDKs available for different languages.
sidebar_label: Libraries
sidebar_position: 2
title: Libraries (SDKs)
---
## Libraries (SDKs)
We have a number of client-side SDKs available for different languages.
| **Language** | **Client SDK** | **Package** |
| :----: | :----: | :----: |
| Python | [llama-stack-client-python](https://github.com/meta-llama/llama-stack-client-python) | [![PyPI version](https://img.shields.io/pypi/v/llama_stack_client.svg)](https://pypi.org/project/llama_stack_client/)
| Swift | [llama-stack-client-swift](https://github.com/meta-llama/llama-stack-client-swift/tree/latest-release) | [![Swift Package Index](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fmeta-llama%2Fllama-stack-client-swift%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/meta-llama/llama-stack-client-swift)
| Node | [llama-stack-client-node](https://github.com/meta-llama/llama-stack-client-node) | [![NPM version](https://img.shields.io/npm/v/llama-stack-client.svg)](https://npmjs.org/package/llama-stack-client)
| Kotlin | [llama-stack-client-kotlin](https://github.com/meta-llama/llama-stack-client-kotlin/tree/latest-release) | [![Maven version](https://img.shields.io/maven-central/v/com.llama.llamastack/llama-stack-client-kotlin)](https://central.sonatype.com/artifact/com.llama.llamastack/llama-stack-client-kotlin)

View file

@ -0,0 +1,149 @@
---
description: environments.
sidebar_label: Quickstart
sidebar_position: 1
title: Quickstart
---
Get started with Llama Stack in minutes!
Llama Stack is a stateful service with REST APIs to support the seamless transition of AI applications across different
environments. You can build and test using a local server first and deploy to a hosted endpoint for production.
In this guide, we'll walk through how to build a RAG application locally using Llama Stack with [Ollama](https://ollama.com/)
as the inference [provider](/docs/providers/inference) for a Llama Model.
**💡 Notebook Version:** You can also follow this quickstart guide in a Jupyter notebook format: [quick_start.ipynb](https://github.com/meta-llama/llama-stack/blob/main/docs/quick_start.ipynb)
#### Step 1: Install and setup
1. Install [uv](https://docs.astral.sh/uv/)
2. Run inference on a Llama model with [Ollama](https://ollama.com/download)
```bash
ollama run llama3.2:3b --keepalive 60m
```
#### Step 2: Run the Llama Stack server
We will use `uv` to run the Llama Stack server.
```bash
OLLAMA_URL=http://localhost:11434 \
uv run --with llama-stack llama stack build --distro starter --image-type venv --run
```
#### Step 3: Run the demo
Now open up a new terminal and copy the following script into a file named `demo_script.py`.
```python title="demo_script.py"
# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.
from llama_stack_client import Agent, AgentEventLogger, RAGDocument, LlamaStackClient
vector_db_id = "my_demo_vector_db"
client = LlamaStackClient(base_url="http://localhost:8321")
models = client.models.list()
# Select the first LLM and first embedding models
model_id = next(m for m in models if m.model_type == "llm").identifier
embedding_model_id = (
em := next(m for m in models if m.model_type == "embedding")
).identifier
embedding_dimension = em.metadata["embedding_dimension"]
vector_db = client.vector_dbs.register(
vector_db_id=vector_db_id,
embedding_model=embedding_model_id,
embedding_dimension=embedding_dimension,
provider_id="faiss",
)
vector_db_id = vector_db.identifier
source = "https://www.paulgraham.com/greatwork.html"
print("rag_tool> Ingesting document:", source)
document = RAGDocument(
document_id="document_1",
content=source,
mime_type="text/html",
metadata={},
)
client.tool_runtime.rag_tool.insert(
documents=[document],
vector_db_id=vector_db_id,
chunk_size_in_tokens=100,
)
agent = Agent(
client,
model=model_id,
instructions="You are a helpful assistant",
tools=[
{
"name": "builtin::rag/knowledge_search",
"args": {"vector_db_ids": [vector_db_id]},
}
],
)
prompt = "How do you do great work?"
print("prompt>", prompt)
use_stream = True
response = agent.create_turn(
messages=[{"role": "user", "content": prompt}],
session_id=agent.create_session("rag_session"),
stream=use_stream,
)
# Only call `AgentEventLogger().log(response)` for streaming responses.
if use_stream:
for log in AgentEventLogger().log(response):
log.print()
else:
print(response)
```
We will use `uv` to run the script
```
uv run --with llama-stack-client,fire,requests demo_script.py
```
And you should see output like below.
```
rag_tool> Ingesting document: https://www.paulgraham.com/greatwork.html
prompt> How do you do great work?
inference> [knowledge_search(query="What is the key to doing great work")]
tool_execution> Tool:knowledge_search Args:{'query': 'What is the key to doing great work'}
tool_execution> Tool:knowledge_search Response:[TextContentItem(text='knowledge_search tool found 5 chunks:\nBEGIN of knowledge_search tool results.\n', type='text'), TextContentItem(text="Result 1:\nDocument_id:docum\nContent: work. Doing great work means doing something important\nso well that you expand people's ideas of what's possible. But\nthere's no threshold for importance. It's a matter of degree, and\noften hard to judge at the time anyway.\n", type='text'), TextContentItem(text="Result 2:\nDocument_id:docum\nContent: work. Doing great work means doing something important\nso well that you expand people's ideas of what's possible. But\nthere's no threshold for importance. It's a matter of degree, and\noften hard to judge at the time anyway.\n", type='text'), TextContentItem(text="Result 3:\nDocument_id:docum\nContent: work. Doing great work means doing something important\nso well that you expand people's ideas of what's possible. But\nthere's no threshold for importance. It's a matter of degree, and\noften hard to judge at the time anyway.\n", type='text'), TextContentItem(text="Result 4:\nDocument_id:docum\nContent: work. Doing great work means doing something important\nso well that you expand people's ideas of what's possible. But\nthere's no threshold for importance. It's a matter of degree, and\noften hard to judge at the time anyway.\n", type='text'), TextContentItem(text="Result 5:\nDocument_id:docum\nContent: work. Doing great work means doing something important\nso well that you expand people's ideas of what's possible. But\nthere's no threshold for importance. It's a matter of degree, and\noften hard to judge at the time anyway.\n", type='text'), TextContentItem(text='END of knowledge_search tool results.\n', type='text')]
inference> Based on the search results, it seems that doing great work means doing something important so well that you expand people's ideas of what's possible. However, there is no clear threshold for importance, and it can be difficult to judge at the time.
To further clarify, I would suggest that doing great work involves:
* Completing tasks with high quality and attention to detail
* Expanding on existing knowledge or ideas
* Making a positive impact on others through your work
* Striving for excellence and continuous improvement
Ultimately, great work is about making a meaningful contribution and leaving a lasting impression.
```
Congratulations! You've successfully built your first RAG application using Llama Stack! 🎉🥳
:::tip HuggingFace access
If you are getting a **401 Client Error** from HuggingFace for the **all-MiniLM-L6-v2** model, try setting **HF_TOKEN** to a valid HuggingFace token in your environment
:::
### Next Steps
Now you're ready to dive deeper into Llama Stack!
- Explore the [Detailed Tutorial](/docs/detailed_tutorial).
- Try the [Getting Started Notebook](https://github.com/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb).
- Browse more [Notebooks on GitHub](https://github.com/meta-llama/llama-stack/tree/main/docs/notebooks).
- Learn about Llama Stack [Concepts](/docs/concepts).
- Discover how to [Build Llama Stacks](/docs/distributions).
- Refer to our [References](/docs/references) for details on the Llama CLI and Python SDK.
- Check out the [llama-stack-apps](https://github.com/meta-llama/llama-stack-apps/tree/main/examples) repository for example applications and tutorials.

101
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---
sidebar_position: 1
title: Welcome to Llama Stack
description: Llama Stack is the open-source framework for building generative AI applications
sidebar_label: Intro
tags:
- getting-started
- overview
---
# Welcome to Llama Stack
Llama Stack is the open-source framework for building generative AI applications.
:::tip Llama 4 is here!
Check out [Getting Started with Llama 4](https://colab.research.google.com/github/meta-llama/llama-stack/blob/main/docs/getting_started_llama4.ipynb)
:::
:::tip News
Llama Stack is now available! See the [release notes](https://github.com/meta-llama/llama-stack/releases) for more details.
:::
## What is Llama Stack?
Llama Stack defines and standardizes the core building blocks needed to bring generative AI applications to market. It provides a unified set of APIs with implementations from leading service providers, enabling seamless transitions between development and production environments. More specifically, it provides:
- **Unified API layer** for Inference, RAG, Agents, Tools, Safety, Evals, and Telemetry.
- **Plugin architecture** to support the rich ecosystem of implementations of the different APIs in different environments like local development, on-premises, cloud, and mobile.
- **Prepackaged verified distributions** which offer a one-stop solution for developers to get started quickly and reliably in any environment
- **Multiple developer interfaces** like CLI and SDKs for Python, Node, iOS, and Android
- **Standalone applications** as examples for how to build production-grade AI applications with Llama Stack
<img src="/img/llama-stack.png" alt="Llama Stack" width="400px" />
Our goal is to provide pre-packaged implementations (aka "distributions") which can be run in a variety of deployment environments. LlamaStack can assist you in your entire app development lifecycle - start iterating on local, mobile or desktop and seamlessly transition to on-prem or public cloud deployments. At every point in this transition, the same set of APIs and the same developer experience is available.
## How does Llama Stack work?
Llama Stack consists of a server (with multiple pluggable API providers) and Client SDKs meant to be used in your applications. The server can be run in a variety of environments, including local (inline) development, on-premises, and cloud. The client SDKs are available for Python, Swift, Node, and Kotlin.
## Quick Links
- Ready to build? Check out the [Getting Started Guide](https://llama-stack.readthedocs.io/en/latest/getting_started/index.html) to get started.
- Want to contribute? See the [Contributing Guide](https://github.com/meta-llama/llama-stack/blob/main/CONTRIBUTING.md).
- Explore [Example Applications](https://github.com/meta-llama/llama-stack-apps) built with Llama Stack.
## Rich Ecosystem Support
Llama Stack provides adapters for popular providers across all API categories:
- **Inference**: Meta Reference, Ollama, Fireworks, Together, NVIDIA, vLLM, AWS Bedrock, OpenAI, Anthropic, and more
- **Vector Databases**: FAISS, Chroma, Milvus, Postgres, Weaviate, Qdrant, and others
- **Safety**: Llama Guard, Prompt Guard, Code Scanner, AWS Bedrock
- **Training & Evaluation**: HuggingFace, TorchTune, NVIDIA NEMO
:::info Provider Details
For complete provider compatibility and setup instructions, see our [Providers Documentation](https://llama-stack.readthedocs.io/en/latest/providers/index.html).
:::
## Get Started Today
<div style={{display: 'flex', gap: '1rem', flexWrap: 'wrap', margin: '2rem 0'}}>
<a href="https://llama-stack.readthedocs.io/en/latest/getting_started/index.html"
style={{
background: 'var(--ifm-color-primary)',
color: 'white',
padding: '0.75rem 1.5rem',
borderRadius: '0.5rem',
textDecoration: 'none',
fontWeight: 'bold'
}}>
🚀 Quick Start Guide
</a>
<a href="https://github.com/meta-llama/llama-stack-apps"
style={{
border: '2px solid var(--ifm-color-primary)',
color: 'var(--ifm-color-primary)',
padding: '0.75rem 1.5rem',
borderRadius: '0.5rem',
textDecoration: 'none',
fontWeight: 'bold'
}}>
📚 Example Apps
</a>
<a href="https://github.com/meta-llama/llama-stack"
style={{
border: '2px solid #666',
color: '#666',
padding: '0.75rem 1.5rem',
borderRadius: '0.5rem',
textDecoration: 'none',
fontWeight: 'bold'
}}>
⭐ Star on GitHub
</a>
</div>

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@ -0,0 +1,377 @@
# Evaluations
The Llama Stack Evaluation flow allows you to run evaluations on your GenAI application datasets or pre-registered benchmarks.
We introduce a set of APIs in Llama Stack for supporting running evaluations of LLM applications.
- `/datasetio` + `/datasets` API
- `/scoring` + `/scoring_functions` API
- `/eval` + `/benchmarks` API
This guide goes over the sets of APIs and developer experience flow of using Llama Stack to run evaluations for different use cases. Checkout our Colab notebook on working examples with evaluations [here](https://colab.research.google.com/drive/10CHyykee9j2OigaIcRv47BKG9mrNm0tJ?usp=sharing).
## Evaluation Concepts
The Evaluation APIs are associated with a set of Resources as shown in the following diagram. Please visit the Resources section in our [Core Concepts](../concepts/) guide for better high-level understanding.
![Eval Concepts](/img/eval-concept.png)
- **DatasetIO**: defines interface with datasets and data loaders.
- Associated with `Dataset` resource.
- **Scoring**: evaluate outputs of the system.
- Associated with `ScoringFunction` resource. We provide a suite of out-of-the box scoring functions and also the ability for you to add custom evaluators. These scoring functions are the core part of defining an evaluation task to output evaluation metrics.
- **Eval**: generate outputs (via Inference or Agents) and perform scoring.
- Associated with `Benchmark` resource.
## Evaluation Examples Walkthrough
[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/meta-llama/llama-stack/blob/main/docs/notebooks/Llama_Stack_Benchmark_Evals.ipynb)
It is best to open this notebook in Colab to follow along with the examples.
### 1. Open Benchmark Model Evaluation
This first example walks you through how to evaluate a model candidate served by Llama Stack on open benchmarks. We will use the following benchmark:
- [MMMU](https://arxiv.org/abs/2311.16502) (A Massive Multi-discipline Multimodal Understanding and Reasoning Benchmark for Expert AGI)]: Benchmark designed to evaluate multimodal models.
- [SimpleQA](https://openai.com/index/introducing-simpleqa/): Benchmark designed to access models to answer short, fact-seeking questions.
#### 1.1 Running MMMU
- We will use a pre-processed MMMU dataset from [llamastack/mmmu](https://huggingface.co/datasets/llamastack/mmmu). The preprocessing code is shown in this [GitHub Gist](https://gist.github.com/yanxi0830/118e9c560227d27132a7fd10e2c92840). The dataset is obtained by transforming the original [MMMU/MMMU](https://huggingface.co/datasets/MMMU/MMMU) dataset into correct format by `inference/chat-completion` API.
```python
import datasets
ds = datasets.load_dataset(path="llamastack/mmmu", name="Agriculture", split="dev")
ds = ds.select_columns(["chat_completion_input", "input_query", "expected_answer"])
eval_rows = ds.to_pandas().to_dict(orient="records")
```
- Next, we will run evaluation on an model candidate, we will need to:
- Define a system prompt
- Define an EvalCandidate
- Run evaluate on the dataset
```python
from rich.pretty import pprint
from tqdm import tqdm
SYSTEM_PROMPT_TEMPLATE = """
You are an expert in {subject} whose job is to answer questions from the user using images.
First, reason about the correct answer.
Then write the answer in the following format where X is exactly one of A,B,C,D:
Answer: X
Make sure X is one of A,B,C,D.
If you are uncertain of the correct answer, guess the most likely one.
"""
system_message = {
"role": "system",
"content": SYSTEM_PROMPT_TEMPLATE.format(subject=subset),
}
# register the evaluation benchmark task with the dataset and scoring function
client.benchmarks.register(
benchmark_id="meta-reference::mmmu",
dataset_id=f"mmmu-{subset}-{split}",
scoring_functions=["basic::regex_parser_multiple_choice_answer"],
)
response = client.eval.evaluate_rows(
benchmark_id="meta-reference::mmmu",
input_rows=eval_rows,
scoring_functions=["basic::regex_parser_multiple_choice_answer"],
benchmark_config={
"eval_candidate": {
"type": "model",
"model": "meta-llama/Llama-3.2-90B-Vision-Instruct",
"sampling_params": {
"strategy": {
"type": "top_p",
"temperature": 1.0,
"top_p": 0.95,
},
"max_tokens": 4096,
"repeat_penalty": 1.0,
},
"system_message": system_message,
},
},
)
pprint(response)
```
#### 1.2. Running SimpleQA
- We will use a pre-processed SimpleQA dataset from [llamastack/evals](https://huggingface.co/datasets/llamastack/evals/viewer/evals__simpleqa) which is obtained by transforming the input query into correct format accepted by `inference/chat-completion` API.
- Since we will be using this same dataset in our next example for Agentic evaluation, we will register it using the `/datasets` API, and interact with it through `/datasetio` API.
```python
simpleqa_dataset_id = "huggingface::simpleqa"
_ = client.datasets.register(
purpose="eval/messages-answer",
source={
"type": "uri",
"uri": "huggingface://datasets/llamastack/simpleqa?split=train",
},
dataset_id=simpleqa_dataset_id,
)
eval_rows = client.datasets.iterrows(
dataset_id=simpleqa_dataset_id,
limit=5,
)
```
```python
client.benchmarks.register(
benchmark_id="meta-reference::simpleqa",
dataset_id=simpleqa_dataset_id,
scoring_functions=["llm-as-judge::405b-simpleqa"],
)
response = client.eval.evaluate_rows(
benchmark_id="meta-reference::simpleqa",
input_rows=eval_rows.data,
scoring_functions=["llm-as-judge::405b-simpleqa"],
benchmark_config={
"eval_candidate": {
"type": "model",
"model": "meta-llama/Llama-3.2-90B-Vision-Instruct",
"sampling_params": {
"strategy": {
"type": "greedy",
},
"max_tokens": 4096,
"repeat_penalty": 1.0,
},
},
},
)
pprint(response)
```
### 2. Agentic Evaluation
- In this example, we will demonstrate how to evaluate a agent candidate served by Llama Stack via `/agent` API.
- We will continue to use the SimpleQA dataset we used in previous example.
- Instead of running evaluation on model, we will run the evaluation on a Search Agent with access to search tool. We will define our agent evaluation candidate through `AgentConfig`.
```python
agent_config = {
"model": "meta-llama/Llama-3.3-70B-Instruct",
"instructions": "You are a helpful assistant that have access to tool to search the web. ",
"sampling_params": {
"strategy": {
"type": "top_p",
"temperature": 0.5,
"top_p": 0.9,
}
},
"toolgroups": [
"builtin::websearch",
],
"tool_choice": "auto",
"tool_prompt_format": "json",
"input_shields": [],
"output_shields": [],
"enable_session_persistence": False,
}
response = client.eval.evaluate_rows(
benchmark_id="meta-reference::simpleqa",
input_rows=eval_rows.data,
scoring_functions=["llm-as-judge::405b-simpleqa"],
benchmark_config={
"eval_candidate": {
"type": "agent",
"config": agent_config,
},
},
)
pprint(response)
```
### 3. Agentic Application Dataset Scoring
[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/meta-llama/llama-stack/blob/main/docs/getting_started.ipynb)
Llama Stack offers a library of scoring functions and the `/scoring` API, allowing you to run evaluations on your pre-annotated AI application datasets.
In this example, we will work with an example RAG dataset you have built previously, label with an annotation, and use LLM-As-Judge with custom judge prompt for scoring. Please checkout our [Llama Stack Playground](../building_applications/playground) for an interactive interface to upload datasets and run scorings.
```python
judge_model_id = "meta-llama/Llama-3.1-405B-Instruct-FP8"
JUDGE_PROMPT = """
Given a QUESTION and GENERATED_RESPONSE and EXPECTED_RESPONSE.
Compare the factual content of the GENERATED_RESPONSE with the EXPECTED_RESPONSE. Ignore any differences in style, grammar, or punctuation.
The GENERATED_RESPONSE may either be a subset or superset of the EXPECTED_RESPONSE, or it may conflict with it. Determine which case applies. Answer the question by selecting one of the following options:
(A) The GENERATED_RESPONSE is a subset of the EXPECTED_RESPONSE and is fully consistent with it.
(B) The GENERATED_RESPONSE is a superset of the EXPECTED_RESPONSE and is fully consistent with it.
(C) The GENERATED_RESPONSE contains all the same details as the EXPECTED_RESPONSE.
(D) There is a disagreement between the GENERATED_RESPONSE and the EXPECTED_RESPONSE.
(E) The answers differ, but these differences don't matter from the perspective of factuality.
Give your answer in the format "Answer: One of ABCDE, Explanation: ".
Your actual task:
QUESTION: {input_query}
GENERATED_RESPONSE: {generated_answer}
EXPECTED_RESPONSE: {expected_answer}
"""
input_query = (
"What are the top 5 topics that were explained? Only list succinct bullet points."
)
generated_answer = """
Here are the top 5 topics that were explained in the documentation for Torchtune:
* What is LoRA and how does it work?
* Fine-tuning with LoRA: memory savings and parameter-efficient finetuning
* Running a LoRA finetune with Torchtune: overview and recipe
* Experimenting with different LoRA configurations: rank, alpha, and attention modules
* LoRA finetuning
"""
expected_answer = """LoRA"""
dataset_rows = [
{
"input_query": input_query,
"generated_answer": generated_answer,
"expected_answer": expected_answer,
},
]
scoring_params = {
"llm-as-judge::base": {
"judge_model": judge_model_id,
"prompt_template": JUDGE_PROMPT,
"type": "llm_as_judge",
"judge_score_regexes": ["Answer: (A|B|C|D|E)"],
},
"basic::subset_of": None,
"braintrust::factuality": None,
}
response = client.scoring.score(
input_rows=dataset_rows, scoring_functions=scoring_params
)
```
## Running Evaluations via CLI
The following examples give the quick steps to start running evaluations using the llama-stack-client CLI.
### Benchmark Evaluation CLI
There are 3 necessary input for running a benchmark eval
- `list of benchmark_ids`: The list of benchmark ids to run evaluation on
- `model-id`: The model id to evaluate on
- `output_dir`: Path to store the evaluate results
```bash
llama-stack-client eval run-benchmark <benchmark_id_1> <benchmark_id_2> ... \
--model_id <model id to evaluate on> \
--output_dir <directory to store the evaluate results> \
```
You can run
```bash
llama-stack-client eval run-benchmark help
```
to see the description of all the flags to run benchmark eval
In the output log, you can find the path to the file that has your evaluation results. Open that file and you can see your aggregate evaluation results over there.
### Application Evaluation CLI
Usage: For running application evals, you will already have available datasets in hand from your application. You will need to specify:
- `scoring-fn-id`: List of ScoringFunction identifiers you wish to use to run on your application.
- `Dataset` used for evaluation:
- (1) `--dataset-path`: path to local file system containing datasets to run evaluation on
- (2) `--dataset-id`: pre-registered dataset in Llama Stack
- (Optional) `--scoring-params-config`: optionally parameterize scoring functions with custom params (e.g. `judge_prompt`, `judge_model`, `parsing_regexes`).
```bash
llama-stack-client eval run_scoring <scoring_fn_id_1> <scoring_fn_id_2> ... <scoring_fn_id_n>
--dataset-path <path-to-local-dataset> \
--output-dir ./
```
### Defining BenchmarkConfig
The `BenchmarkConfig` are user specified config to define:
1. `EvalCandidate` to run generation on:
- `ModelCandidate`: The model will be used for generation through LlamaStack /inference API.
- `AgentCandidate`: The agentic system specified by AgentConfig will be used for generation through LlamaStack /agents API.
2. Optionally scoring function params to allow customization of scoring function behaviour. This is useful to parameterize generic scoring functions such as LLMAsJudge with custom `judge_model` / `judge_prompt`.
**Example BenchmarkConfig**
```json
{
"eval_candidate": {
"type": "model",
"model": "Llama3.1-405B-Instruct",
"sampling_params": {
"strategy": {
"type": "greedy",
},
"max_tokens": 0,
"repetition_penalty": 1.0
}
},
"scoring_params": {
"llm-as-judge::llm_as_judge_base": {
"type": "llm_as_judge",
"judge_model": "meta-llama/Llama-3.1-8B-Instruct",
"prompt_template": "Your job is to look at a question, a gold target ........",
"judge_score_regexes": [
"(A|B|C)"
]
}
}
}
```
## Open-benchmark Contributing Guide
### Create the new dataset for your new benchmark
An eval open-benchmark essentially contains 2 parts:
- `raw data`: The raw dataset associated with the benchmark. You typically need to search the original paper that introduces the benchmark and find the canonical dataset (usually hosted on huggingface)
- `prompt template`: How to ask the candidate model to generate the answer (prompt template plays a critical role to the evaluation results). Typically, you can find the reference prompt template associated with the benchmark in benchmarks author's repo ([example](https://github.com/idavidrein/gpqa/blob/main/prompts/chain_of_thought.txt)) or some other popular open source repos ([example](https://github.com/openai/simple-evals/blob/0a6e8f62e52bc5ae915f752466be3af596caf392/common.py#L14))
To create new open-benchmark in llama stack, you need to combine the prompt template and the raw data into the `chat_completion_input` column in the evaluation dataset.
Llama stack enforces the evaluate dataset schema to contain at least 3 columns:
- `chat_completion_input`: The actual input to the model to run the generation for eval
- `input_query`: The raw input from the raw dataset without the prompt template
- `expected_answer`: The ground truth for scoring functions to calculate the score from.
You need to write a script [example convert script](https://gist.github.com/yanxi0830/118e9c560227d27132a7fd10e2c92840) to convert the benchmark raw dataset to llama stack format eval dataset and update the dataset to huggingface [example benchmark dataset](https://huggingface.co/datasets/llamastack/mmmu)
### Find scoring function for your new benchmark
The purpose of scoring function is to calculate the score for each example based on candidate model generation result and expected_answer. It also aggregates the scores from all the examples and generate the final evaluate results.
Firstly, you can see if the existing [llama stack scoring functions](https://github.com/meta-llama/llama-stack/tree/main/llama_stack/providers/inline/scoring) can fulfill your need. If not, you need to write a new scoring function based on what benchmark author / other open source repo describe.
### Add new benchmark into template
Firstly, you need to add the evaluation dataset associated with your benchmark under `datasets` resource in the [open-benchmark](https://github.com/meta-llama/llama-stack/blob/main/llama_stack/distributions/open-benchmark/run.yaml)
Secondly, you need to add the new benchmark you just created under the `benchmarks` resource in the same template. To add the new benchmark, you need to have
- `benchmark_id`: identifier of the benchmark
- `dataset_id`: identifier of the dataset associated with your benchmark
- `scoring_functions`: scoring function to calculate the score based on generation results and expected_answer
### Test the new benchmark
Spin up llama stack server with 'open-benchmark' templates
```bash
llama stack run llama_stack/distributions/open-benchmark/run.yaml
```
Run eval benchmark CLI with your new benchmark id
```bash
llama-stack-client eval run-benchmark <new_benchmark_id> \
--model_id <model id to evaluate on> \
--output_dir <directory to store the evaluate results> \
```

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---
title: References
description: Reference documentation for Llama Stack
sidebar_label: Overview
sidebar_position: 1
---
# References
- [Python SDK Reference](python_sdk_reference/index)
- [Llama CLI](llama_cli_reference/index) for building and running your Llama Stack server
- [Llama Stack Client CLI](llama_stack_client_cli_reference) for interacting with your Llama Stack server

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# Downloading Models
The `llama` CLI tool helps you setup and use the Llama Stack. It should be available on your path after installing the `llama-stack` package.
## Installation
You have two ways to install Llama Stack:
1. **Install as a package**:
You can install the repository directly from [PyPI](https://pypi.org/project/llama-stack/) by running the following command:
```bash
pip install llama-stack
```
2. **Install from source**:
If you prefer to install from the source code, follow these steps:
```bash
mkdir -p ~/local
cd ~/local
git clone git@github.com:meta-llama/llama-stack.git
uv venv myenv --python 3.12
source myenv/bin/activate # On Windows: myenv\Scripts\activate
cd llama-stack
pip install -e .
## Downloading models via CLI
You first need to have models downloaded locally.
To download any model you need the **Model Descriptor**.
This can be obtained by running the command
```
llama model list
```
You should see a table like this:
```
+----------------------------------+------------------------------------------+----------------+
| Model Descriptor(ID) | Hugging Face Repo | Context Length |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-8B | meta-llama/Llama-3.1-8B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-70B | meta-llama/Llama-3.1-70B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B:bf16-mp8 | meta-llama/Llama-3.1-405B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B | meta-llama/Llama-3.1-405B-FP8 | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B:bf16-mp16 | meta-llama/Llama-3.1-405B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-8B-Instruct | meta-llama/Llama-3.1-8B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-70B-Instruct | meta-llama/Llama-3.1-70B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B-Instruct:bf16-mp8 | meta-llama/Llama-3.1-405B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B-Instruct | meta-llama/Llama-3.1-405B-Instruct-FP8 | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B-Instruct:bf16-mp16 | meta-llama/Llama-3.1-405B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-1B | meta-llama/Llama-3.2-1B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-3B | meta-llama/Llama-3.2-3B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-11B-Vision | meta-llama/Llama-3.2-11B-Vision | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-90B-Vision | meta-llama/Llama-3.2-90B-Vision | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-1B-Instruct | meta-llama/Llama-3.2-1B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-3B-Instruct | meta-llama/Llama-3.2-3B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-11B-Vision-Instruct | meta-llama/Llama-3.2-11B-Vision-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-90B-Vision-Instruct | meta-llama/Llama-3.2-90B-Vision-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-11B-Vision | meta-llama/Llama-Guard-3-11B-Vision | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-1B:int4-mp1 | meta-llama/Llama-Guard-3-1B-INT4 | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-1B | meta-llama/Llama-Guard-3-1B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-8B | meta-llama/Llama-Guard-3-8B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-8B:int8-mp1 | meta-llama/Llama-Guard-3-8B-INT8 | 128K |
+----------------------------------+------------------------------------------+----------------+
| Prompt-Guard-86M | meta-llama/Prompt-Guard-86M | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-2-8B | meta-llama/Llama-Guard-2-8B | 4K |
+----------------------------------+------------------------------------------+----------------+
```
To download models, you can use the llama download command.
#### Downloading from [Meta](https://llama.meta.com/llama-downloads/)
Here is an example download command to get the 3B-Instruct/11B-Vision-Instruct model. You will need META_URL which can be obtained from [here](https://llama.meta.com/docs/getting_the_models/meta/). Note: You need to quote the META_URL
Download the required checkpoints using the following commands:
```bash
# download the 8B model, this can be run on a single GPU
llama download --source meta --model-id Llama3.2-3B-Instruct --meta-url 'META_URL'
# you can also get the 70B model, this will require 8 GPUs however
llama download --source meta --model-id Llama3.2-11B-Vision-Instruct --meta-url 'META_URL'
# llama-agents have safety enabled by default. For this, you will need
# safety models -- Llama-Guard and Prompt-Guard
llama download --source meta --model-id Prompt-Guard-86M --meta-url 'META_URL'
llama download --source meta --model-id Llama-Guard-3-1B --meta-url 'META_URL'
```
#### Downloading from [Hugging Face](https://huggingface.co/meta-llama)
Essentially, the same commands above work, just replace `--source meta` with `--source huggingface`.
```bash
llama download --source huggingface --model-id Llama3.1-8B-Instruct --hf-token <HF_TOKEN>
llama download --source huggingface --model-id Llama3.1-70B-Instruct --hf-token <HF_TOKEN>
llama download --source huggingface --model-id Llama-Guard-3-1B --ignore-patterns *original*
llama download --source huggingface --model-id Prompt-Guard-86M --ignore-patterns *original*
```
**Important:** Set your environment variable `HF_TOKEN` or pass in `--hf-token` to the command to validate your access. You can find your token at [https://huggingface.co/settings/tokens](https://huggingface.co/settings/tokens).
```{tip}
Default for `llama download` is to run with `--ignore-patterns *.safetensors` since we use the `.pth` files in the `original` folder. For Llama Guard and Prompt Guard, however, we need safetensors. Hence, please run with `--ignore-patterns original` so that safetensors are downloaded and `.pth` files are ignored.
```
## List the downloaded models
To list the downloaded models with the following command:
```
llama model list --downloaded
```
You should see a table like this:
```
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━┓
┃ Model ┃ Size ┃ Modified Time ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━┩
│ Llama3.2-1B-Instruct:int4-qlora-eo8 │ 1.53 GB │ 2025-02-26 11:22:28 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.2-1B │ 2.31 GB │ 2025-02-18 21:48:52 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Prompt-Guard-86M │ 0.02 GB │ 2025-02-26 11:29:28 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.2-3B-Instruct:int4-spinquant-eo8 │ 3.69 GB │ 2025-02-26 11:37:41 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.2-3B │ 5.99 GB │ 2025-02-18 21:51:26 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.1-8B │ 14.97 GB │ 2025-02-16 10:36:37 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.2-1B-Instruct:int4-spinquant-eo8 │ 1.51 GB │ 2025-02-26 11:35:02 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama-Guard-3-1B │ 2.80 GB │ 2025-02-26 11:20:46 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama-Guard-3-1B:int4 │ 0.43 GB │ 2025-02-26 11:33:33 │
└─────────────────────────────────────────┴──────────┴─────────────────────┘
```

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@ -0,0 +1,276 @@
# llama (server-side) CLI Reference
The `llama` CLI tool helps you set up and use the Llama Stack. The CLI is available on your path after installing the `llama-stack` package.
## Installation
You have two ways to install Llama Stack:
1. **Install as a package**:
You can install the repository directly from [PyPI](https://pypi.org/project/llama-stack/) by running the following command:
```bash
pip install llama-stack
```
2. **Install from source**:
If you prefer to install from the source code, follow these steps:
```bash
mkdir -p ~/local
cd ~/local
git clone git@github.com:meta-llama/llama-stack.git
uv venv myenv --python 3.12
source myenv/bin/activate # On Windows: myenv\Scripts\activate
cd llama-stack
pip install -e .
## `llama` subcommands
1. `download`: Supports downloading models from Meta or Hugging Face. [Downloading models](#downloading-models)
2. `model`: Lists available models and their properties. [Understanding models](#understand-the-models)
3. `stack`: Allows you to build a stack using the `llama stack` distribution and run a Llama Stack server. You can read more about how to build a Llama Stack distribution in the [Build your own Distribution](../../distributions/building_distro) documentation.
### Sample Usage
```
llama --help
```
```
usage: llama [-h] {download,model,stack} ...
Welcome to the Llama CLI
options:
-h, --help show this help message and exit
subcommands:
{download,model,stack}
```
## Downloading models
You first need to have models downloaded locally.
To download any model you need the **Model Descriptor**.
This can be obtained by running the command
```
llama model list
```
You should see a table like this:
```
+----------------------------------+------------------------------------------+----------------+
| Model Descriptor(ID) | Hugging Face Repo | Context Length |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-8B | meta-llama/Llama-3.1-8B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-70B | meta-llama/Llama-3.1-70B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B:bf16-mp8 | meta-llama/Llama-3.1-405B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B | meta-llama/Llama-3.1-405B-FP8 | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B:bf16-mp16 | meta-llama/Llama-3.1-405B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-8B-Instruct | meta-llama/Llama-3.1-8B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-70B-Instruct | meta-llama/Llama-3.1-70B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B-Instruct:bf16-mp8 | meta-llama/Llama-3.1-405B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B-Instruct | meta-llama/Llama-3.1-405B-Instruct-FP8 | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.1-405B-Instruct:bf16-mp16 | meta-llama/Llama-3.1-405B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-1B | meta-llama/Llama-3.2-1B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-3B | meta-llama/Llama-3.2-3B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-11B-Vision | meta-llama/Llama-3.2-11B-Vision | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-90B-Vision | meta-llama/Llama-3.2-90B-Vision | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-1B-Instruct | meta-llama/Llama-3.2-1B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-3B-Instruct | meta-llama/Llama-3.2-3B-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-11B-Vision-Instruct | meta-llama/Llama-3.2-11B-Vision-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama3.2-90B-Vision-Instruct | meta-llama/Llama-3.2-90B-Vision-Instruct | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-11B-Vision | meta-llama/Llama-Guard-3-11B-Vision | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-1B:int4-mp1 | meta-llama/Llama-Guard-3-1B-INT4 | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-1B | meta-llama/Llama-Guard-3-1B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-8B | meta-llama/Llama-Guard-3-8B | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-3-8B:int8-mp1 | meta-llama/Llama-Guard-3-8B-INT8 | 128K |
+----------------------------------+------------------------------------------+----------------+
| Prompt-Guard-86M | meta-llama/Prompt-Guard-86M | 128K |
+----------------------------------+------------------------------------------+----------------+
| Llama-Guard-2-8B | meta-llama/Llama-Guard-2-8B | 4K |
+----------------------------------+------------------------------------------+----------------+
```
To download models, you can use the `llama download` command.
### Downloading from [Meta](https://llama.meta.com/llama-downloads/)
Here is an example download command to get the 3B-Instruct/11B-Vision-Instruct model. You will need META_URL which can be obtained from [here](https://llama.meta.com/docs/getting_the_models/meta/)
Download the required checkpoints using the following commands:
```bash
# download the 8B model, this can be run on a single GPU
llama download --source meta --model-id Llama3.2-3B-Instruct --meta-url META_URL
# you can also get the 70B model, this will require 8 GPUs however
llama download --source meta --model-id Llama3.2-11B-Vision-Instruct --meta-url META_URL
# llama-agents have safety enabled by default. For this, you will need
# safety models -- Llama-Guard and Prompt-Guard
llama download --source meta --model-id Prompt-Guard-86M --meta-url META_URL
llama download --source meta --model-id Llama-Guard-3-1B --meta-url META_URL
```
### Downloading from [Hugging Face](https://huggingface.co/meta-llama)
Essentially, the same commands above work, just replace `--source meta` with `--source huggingface`.
```bash
llama download --source huggingface --model-id Llama3.1-8B-Instruct --hf-token <HF_TOKEN>
llama download --source huggingface --model-id Llama3.1-70B-Instruct --hf-token <HF_TOKEN>
llama download --source huggingface --model-id Llama-Guard-3-1B --ignore-patterns *original*
llama download --source huggingface --model-id Prompt-Guard-86M --ignore-patterns *original*
```
**Important:** Set your environment variable `HF_TOKEN` or pass in `--hf-token` to the command to validate your access. You can find your token at [https://huggingface.co/settings/tokens](https://huggingface.co/settings/tokens).
```{tip}
Default for `llama download` is to run with `--ignore-patterns *.safetensors` since we use the `.pth` files in the `original` folder. For Llama Guard and Prompt Guard, however, we need safetensors. Hence, please run with `--ignore-patterns original` so that safetensors are downloaded and `.pth` files are ignored.
```
## List the downloaded models
To list the downloaded models with the following command:
```
llama model list --downloaded
```
You should see a table like this:
```
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━┓
┃ Model ┃ Size ┃ Modified Time ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━┩
│ Llama3.2-1B-Instruct:int4-qlora-eo8 │ 1.53 GB │ 2025-02-26 11:22:28 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.2-1B │ 2.31 GB │ 2025-02-18 21:48:52 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Prompt-Guard-86M │ 0.02 GB │ 2025-02-26 11:29:28 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.2-3B-Instruct:int4-spinquant-eo8 │ 3.69 GB │ 2025-02-26 11:37:41 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.2-3B │ 5.99 GB │ 2025-02-18 21:51:26 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.1-8B │ 14.97 GB │ 2025-02-16 10:36:37 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama3.2-1B-Instruct:int4-spinquant-eo8 │ 1.51 GB │ 2025-02-26 11:35:02 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama-Guard-3-1B │ 2.80 GB │ 2025-02-26 11:20:46 │
├─────────────────────────────────────────┼──────────┼─────────────────────┤
│ Llama-Guard-3-1B:int4 │ 0.43 GB │ 2025-02-26 11:33:33 │
└─────────────────────────────────────────┴──────────┴─────────────────────┘
```
## Understand the models
The `llama model` command helps you explore the models interface.
1. `download`: Download the model from different sources. (meta, huggingface)
2. `list`: Lists all the models available for download with hardware requirements for deploying the models.
3. `prompt-format`: Show llama model message formats.
4. `describe`: Describes all the properties of the model.
### Sample Usage
`llama model <subcommand> <options>`
```
llama model --help
```
```
usage: llama model [-h] {download,list,prompt-format,describe,verify-download,remove} ...
Work with llama models
options:
-h, --help show this help message and exit
model_subcommands:
{download,list,prompt-format,describe,verify-download,remove}
```
### Describe
You can use the describe command to know more about a model:
```
llama model describe -m Llama3.2-3B-Instruct
```
```
+-----------------------------+----------------------------------+
| Model | Llama3.2-3B-Instruct |
+-----------------------------+----------------------------------+
| Hugging Face ID | meta-llama/Llama-3.2-3B-Instruct |
+-----------------------------+----------------------------------+
| Description | Llama 3.2 3b instruct model |
+-----------------------------+----------------------------------+
| Context Length | 128K tokens |
+-----------------------------+----------------------------------+
| Weights format | bf16 |
+-----------------------------+----------------------------------+
| Model params.json | { |
| | "dim": 3072, |
| | "n_layers": 28, |
| | "n_heads": 24, |
| | "n_kv_heads": 8, |
| | "vocab_size": 128256, |
| | "ffn_dim_multiplier": 1.0, |
| | "multiple_of": 256, |
| | "norm_eps": 1e-05, |
| | "rope_theta": 500000.0, |
| | "use_scaled_rope": true |
| | } |
+-----------------------------+----------------------------------+
| Recommended sampling params | { |
| | "temperature": 1.0, |
| | "top_p": 0.9, |
| | "top_k": 0 |
| | } |
+-----------------------------+----------------------------------+
```
### Prompt Format
You can even run `llama model prompt-format` see all of the templates and their tokens:
```
llama model prompt-format -m Llama3.2-3B-Instruct
```
![alt text](../../../resources/prompt-format.png)
You will be shown a Markdown formatted description of the model interface and how prompts / messages are formatted for various scenarios.
**NOTE**: Outputs in terminal are color printed to show special tokens.
### Remove model
You can run `llama model remove` to remove an unnecessary model:
```
llama model remove -m Llama-Guard-3-8B-int8
```

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@ -0,0 +1,589 @@
# llama (client-side) CLI Reference
The `llama-stack-client` CLI allows you to query information about the distribution.
## Basic Commands
### `llama-stack-client`
```bash
llama-stack-client
Usage: llama-stack-client [OPTIONS] COMMAND [ARGS]...
Welcome to the llama-stack-client CLI - a command-line interface for
interacting with Llama Stack
Options:
--version Show the version and exit.
--endpoint TEXT Llama Stack distribution endpoint
--api-key TEXT Llama Stack distribution API key
--config TEXT Path to config file
--help Show this message and exit.
Commands:
configure Configure Llama Stack Client CLI.
datasets Manage datasets.
eval Run evaluation tasks.
eval_tasks Manage evaluation tasks.
inference Inference (chat).
inspect Inspect server configuration.
models Manage GenAI models.
post_training Post-training.
providers Manage API providers.
scoring_functions Manage scoring functions.
shields Manage safety shield services.
toolgroups Manage available tool groups.
vector_dbs Manage vector databases.
```
### `llama-stack-client configure`
Configure Llama Stack Client CLI.
```bash
llama-stack-client configure
> Enter the host name of the Llama Stack distribution server: localhost
> Enter the port number of the Llama Stack distribution server: 8321
Done! You can now use the Llama Stack Client CLI with endpoint http://localhost:8321
```
Optional arguments:
- `--endpoint`: Llama Stack distribution endpoint
- `--api-key`: Llama Stack distribution API key
## `llama-stack-client inspect version`
Inspect server configuration.
```bash
llama-stack-client inspect version
```
```bash
VersionInfo(version='0.2.14')
```
### `llama-stack-client providers list`
Show available providers on distribution endpoint
```bash
llama-stack-client providers list
```
```
+-----------+----------------+-----------------+
| API | Provider ID | Provider Type |
+===========+================+=================+
| scoring | meta0 | meta-reference |
+-----------+----------------+-----------------+
| datasetio | meta0 | meta-reference |
+-----------+----------------+-----------------+
| inference | tgi0 | remote::tgi |
+-----------+----------------+-----------------+
| memory | meta-reference | meta-reference |
+-----------+----------------+-----------------+
| agents | meta-reference | meta-reference |
+-----------+----------------+-----------------+
| telemetry | meta-reference | meta-reference |
+-----------+----------------+-----------------+
| safety | meta-reference | meta-reference |
+-----------+----------------+-----------------+
```
### `llama-stack-client providers inspect`
Show specific provider configuration on distribution endpoint
```bash
llama-stack-client providers inspect <provider_id>
```
## Inference
Inference (chat).
### `llama-stack-client inference chat-completion`
Show available inference chat completion endpoints on distribution endpoint
```bash
llama-stack-client inference chat-completion --message <message> [--stream] [--session] [--model-id]
```
```bash
OpenAIChatCompletion(
id='chatcmpl-aacd11f3-8899-4ec5-ac5b-e655132f6891',
choices=[
OpenAIChatCompletionChoice(
finish_reason='stop',
index=0,
message=OpenAIChatCompletionChoiceMessageOpenAIAssistantMessageParam(
role='assistant',
content='The captain of the whaleship Pequod in Nathaniel Hawthorne\'s novel "Moby-Dick" is Captain
Ahab. He\'s a vengeful and obsessive old sailor who\'s determined to hunt down and kill the white sperm whale
Moby-Dick, whom he\'s lost his leg to in a previous encounter.',
name=None,
tool_calls=None,
refusal=None,
annotations=None,
audio=None,
function_call=None
),
logprobs=None
)
],
created=1752578797,
model='llama3.2:3b-instruct-fp16',
object='chat.completion',
service_tier=None,
system_fingerprint='fp_ollama',
usage={
'completion_tokens': 67,
'prompt_tokens': 33,
'total_tokens': 100,
'completion_tokens_details': None,
'prompt_tokens_details': None
}
)
```
Required arguments:
**Note:** At least one of these parameters is required for chat completion
- `--message`: Message
- `--session`: Start a Chat Session
Optional arguments:
- `--stream`: Stream
- `--model-id`: Model ID
## Model Management
Manage GenAI models.
### `llama-stack-client models list`
Show available llama models at distribution endpoint
```bash
llama-stack-client models list
```
```
Available Models
┏━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━┳━━━━━━━━━━━━━┓
┃ model_type ┃ identifier ┃ provider_resource_id ┃ metadata ┃ provider_id ┃
┡━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━╇━━━━━━━━━━━━━┩
│ llm │ meta-llama/Llama-3.2-3B-Instruct │ llama3.2:3b-instruct-fp16 │ │ ollama │
└──────────────┴──────────────────────────────────────┴──────────────────────────────┴───────────┴─────────────┘
Total models: 1
```
### `llama-stack-client models get`
Show details of a specific model at the distribution endpoint
```bash
llama-stack-client models get Llama3.1-8B-Instruct
```
```
+----------------------+----------------------+----------------------------------------------------------+---------------+
| identifier | llama_model | metadata | provider_id |
+======================+======================+==========================================================+===============+
| Llama3.1-8B-Instruct | Llama3.1-8B-Instruct | {'huggingface_repo': 'meta-llama/Llama-3.1-8B-Instruct'} | tgi0 |
+----------------------+----------------------+----------------------------------------------------------+---------------+
```
```bash
llama-stack-client models get Random-Model
Model RandomModel is not found at distribution endpoint host:port. Please ensure endpoint is serving specified model.
```
### `llama-stack-client models register`
Register a new model at distribution endpoint
```bash
llama-stack-client models register <model_id> [--provider-id <provider_id>] [--provider-model-id <provider_model_id>] [--metadata <metadata>] [--model-type <model_type>]
```
Required arguments:
- `MODEL_ID`: Model ID
- `--provider-id`: Provider ID for the model
Optional arguments:
- `--provider-model-id`: Provider's model ID
- `--metadata`: JSON metadata for the model
- `--model-type`: Model type: `llm`, `embedding`
### `llama-stack-client models unregister`
Unregister a model from distribution endpoint
```bash
llama-stack-client models unregister <model_id>
```
## Vector DB Management
Manage vector databases.
### `llama-stack-client vector_dbs list`
Show available vector dbs on distribution endpoint
```bash
llama-stack-client vector_dbs list
```
```
┏━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ identifier ┃ provider_id ┃ provider_resource_id ┃ vector_db_type ┃ params ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┩
│ my_demo_vector_db │ faiss │ my_demo_vector_db │ │ embedding_dimension: 384 │
│ │ │ │ │ embedding_model: all-MiniLM-L6-v2 │
│ │ │ │ │ type: vector_db │
│ │ │ │ │ │
└──────────────────────────┴─────────────┴──────────────────────────┴────────────────┴───────────────────────────────────┘
```
### `llama-stack-client vector_dbs register`
Create a new vector db
```bash
llama-stack-client vector_dbs register <vector-db-id> [--provider-id <provider-id>] [--provider-vector-db-id <provider-vector-db-id>] [--embedding-model <embedding-model>] [--embedding-dimension <embedding-dimension>]
```
Required arguments:
- `VECTOR_DB_ID`: Vector DB ID
Optional arguments:
- `--provider-id`: Provider ID for the vector db
- `--provider-vector-db-id`: Provider's vector db ID
- `--embedding-model`: Embedding model to use. Default: `all-MiniLM-L6-v2`
- `--embedding-dimension`: Dimension of embeddings. Default: 384
### `llama-stack-client vector_dbs unregister`
Delete a vector db
```bash
llama-stack-client vector_dbs unregister <vector-db-id>
```
Required arguments:
- `VECTOR_DB_ID`: Vector DB ID
## Shield Management
Manage safety shield services.
### `llama-stack-client shields list`
Show available safety shields on distribution endpoint
```bash
llama-stack-client shields list
```
```
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ identifier ┃ provider_alias ┃ params ┃ provider_id ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┩
│ ollama │ ollama/llama-guard3:1b │ │ llama-guard │
└──────────────────────────────────┴───────────────────────────────────────────────────────────────────────┴───────────────────────┴────────────────────────────────────┘
```
### `llama-stack-client shields register`
Register a new safety shield
```bash
llama-stack-client shields register --shield-id <shield-id> [--provider-id <provider-id>] [--provider-shield-id <provider-shield-id>] [--params <params>]
```
Required arguments:
- `--shield-id`: ID of the shield
Optional arguments:
- `--provider-id`: Provider ID for the shield
- `--provider-shield-id`: Provider's shield ID
- `--params`: JSON configuration parameters for the shield
## Eval execution
Run evaluation tasks.
### `llama-stack-client eval run-benchmark`
Run a evaluation benchmark task
```bash
llama-stack-client eval run-benchmark <eval-task-id1> [<eval-task-id2> ...] --eval-task-config <config-file> --output-dir <output-dir> --model-id <model-id> [--num-examples <num>] [--visualize] [--repeat-penalty <repeat-penalty>] [--top-p <top-p>] [--max-tokens <max-tokens>]
```
Required arguments:
- `--eval-task-config`: Path to the eval task config file in JSON format
- `--output-dir`: Path to the directory where evaluation results will be saved
- `--model-id`: model id to run the benchmark eval on
Optional arguments:
- `--num-examples`: Number of examples to evaluate (useful for debugging)
- `--visualize`: If set, visualizes evaluation results after completion
- `--repeat-penalty`: repeat-penalty in the sampling params to run generation
- `--top-p`: top-p in the sampling params to run generation
- `--max-tokens`: max-tokens in the sampling params to run generation
- `--temperature`: temperature in the sampling params to run generation
Example benchmark_config.json:
```json
{
"type": "benchmark",
"eval_candidate": {
"type": "model",
"model": "Llama3.1-405B-Instruct",
"sampling_params": {
"strategy": "greedy",
}
}
}
```
### `llama-stack-client eval run-scoring`
Run scoring from application datasets
```bash
llama-stack-client eval run-scoring <eval-task-id> --output-dir <output-dir> [--num-examples <num>] [--visualize]
```
Required arguments:
- `--output-dir`: Path to the directory where scoring results will be saved
Optional arguments:
- `--num-examples`: Number of examples to evaluate (useful for debugging)
- `--visualize`: If set, visualizes scoring results after completion
- `--scoring-params-config`: Path to the scoring params config file in JSON format
- `--dataset-id`: Pre-registered dataset_id to score (from llama-stack-client datasets list)
- `--dataset-path`: Path to the dataset file to score
## Eval Tasks
Manage evaluation tasks.
### `llama-stack-client eval_tasks list`
Show available eval tasks on distribution endpoint
```bash
llama-stack-client eval_tasks list
```
### `llama-stack-client eval_tasks register`
Register a new eval task
```bash
llama-stack-client eval_tasks register --eval-task-id <eval-task-id> --dataset-id <dataset-id> --scoring-functions <scoring-functions> [--provider-id <provider-id>] [--provider-eval-task-id <provider-eval-task-id>] [--metadata <metadata>]
```
Required arguments:
- `--eval-task-id`: ID of the eval task
- `--dataset-id`: ID of the dataset to evaluate
- `--scoring-functions`: Scoring functions to use for evaluation
Optional arguments:
- `--provider-id`: Provider ID for the eval task
- `--provider-eval-task-id`: Provider's eval task ID
## Tool Group Management
Manage available tool groups.
### `llama-stack-client toolgroups list`
Show available llama toolgroups at distribution endpoint
```bash
llama-stack-client toolgroups list
```
```
+---------------------------+------------------+------+---------------+
| identifier | provider_id | args | mcp_endpoint |
+===========================+==================+======+===============+
| builtin::rag | rag-runtime | None | None |
+---------------------------+------------------+------+---------------+
| builtin::websearch | tavily-search | None | None |
+---------------------------+------------------+------+---------------+
```
### `llama-stack-client toolgroups get`
Get available llama toolgroups by id
```bash
llama-stack-client toolgroups get <toolgroup_id>
```
Shows detailed information about a specific toolgroup. If the toolgroup is not found, displays an error message.
Required arguments:
- `TOOLGROUP_ID`: ID of the tool group
### `llama-stack-client toolgroups register`
Register a new toolgroup at distribution endpoint
```bash
llama-stack-client toolgroups register <toolgroup_id> [--provider-id <provider-id>] [--provider-toolgroup-id <provider-toolgroup-id>] [--mcp-config <mcp-config>] [--args <args>]
```
Required arguments:
- `TOOLGROUP_ID`: ID of the tool group
Optional arguments:
- `--provider-id`: Provider ID for the toolgroup
- `--provider-toolgroup-id`: Provider's toolgroup ID
- `--mcp-config`: JSON configuration for the MCP endpoint
- `--args`: JSON arguments for the toolgroup
### `llama-stack-client toolgroups unregister`
Unregister a toolgroup from distribution endpoint
```bash
llama-stack-client toolgroups unregister <toolgroup_id>
```
Required arguments:
- `TOOLGROUP_ID`: ID of the tool group
## Datasets Management
Manage datasets.
### `llama-stack-client datasets list`
Show available datasets on distribution endpoint
```bash
llama-stack-client datasets list
```
### `llama-stack-client datasets register`
```bash
llama-stack-client datasets register --dataset_id <dataset_id> --purpose <purpose> [--url <url] [--dataset-path <dataset-path>] [--dataset-id <dataset-id>] [--metadata <metadata>]
```
Required arguments:
- `--dataset_id`: Id of the dataset
- `--purpose`: Purpose of the dataset
Optional arguments:
- `--metadata`: Metadata of the dataset
- `--url`: URL of the dataset
- `--dataset-path`: Local file path to the dataset. If specified, upload dataset via URL
### `llama-stack-client datasets unregister`
Remove a dataset
```bash
llama-stack-client datasets unregister <dataset-id>
```
Required arguments:
- `DATASET_ID`: Id of the dataset
## Scoring Functions Management
Manage scoring functions.
### `llama-stack-client scoring_functions list`
Show available scoring functions on distribution endpoint
```bash
llama-stack-client scoring_functions list
```
```
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━┓
┃ identifier ┃ provider_id ┃ description ┃ type ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━┩
│ basic::docvqa │ basic │ DocVQA Visual Question & Answer scoring function │ scoring_function │
│ basic::equality │ basic │ Returns 1.0 if the input is equal to the target, 0.0 │ scoring_function │
│ │ │ otherwise. │ │
└────────────────────────────────────────────┴──────────────┴───────────────────────────────────────────────────────────────┴──────────────────┘
```
### `llama-stack-client scoring_functions register`
Register a new scoring function
```bash
llama-stack-client scoring_functions register --scoring-fn-id <scoring-fn-id> --description <description> --return-type <return-type> [--provider-id <provider-id>] [--provider-scoring-fn-id <provider-scoring-fn-id>] [--params <params>]
```
Required arguments:
- `--scoring-fn-id`: Id of the scoring function
- `--description`: Description of the scoring function
- `--return-type`: Return type of the scoring function
Optional arguments:
- `--provider-id`: Provider ID for the scoring function
- `--provider-scoring-fn-id`: Provider's scoring function ID
- `--params`: Parameters for the scoring function in JSON format
## Post Training Management
Post-training.
### `llama-stack-client post_training list`
Show the list of available post training jobs
```bash
llama-stack-client post_training list
```
```bash
["job-1", "job-2", "job-3"]
```
### `llama-stack-client post_training artifacts`
Get the training artifacts of a specific post training job
```bash
llama-stack-client post_training artifacts --job-uuid <job-uuid>
```
```bash
JobArtifactsResponse(checkpoints=[], job_uuid='job-1')
```
Required arguments:
- `--job-uuid`: Job UUID
### `llama-stack-client post_training supervised_fine_tune`
Kick off a supervised fine tune job
```bash
llama-stack-client post_training supervised_fine_tune --job-uuid <job-uuid> --model <model> --algorithm-config <algorithm-config> --training-config <training-config> [--checkpoint-dir <checkpoint-dir>]
```
Required arguments:
- `--job-uuid`: Job UUID
- `--model`: Model ID
- `--algorithm-config`: Algorithm Config
- `--training-config`: Training Config
Optional arguments:
- `--checkpoint-dir`: Checkpoint Config
### `llama-stack-client post_training status`
Show the status of a specific post training job
```bash
llama-stack-client post_training status --job-uuid <job-uuid>
```
```bash
JobStatusResponse(
checkpoints=[],
job_uuid='job-1',
status='completed',
completed_at="",
resources_allocated="",
scheduled_at="",
started_at=""
)
```
Required arguments:
- `--job-uuid`: Job UUID
### `llama-stack-client post_training cancel`
Cancel the training job
```bash
llama-stack-client post_training cancel --job-uuid <job-uuid>
```
```bash
# This functionality is not yet implemented for llama-stack-client
╭────────────────────────────────────────────────────────────╮
│ Failed to post_training cancel_training_job │
│ │
│ Error Type: InternalServerError │
│ Details: Error code: 501 - {'detail': 'Not implemented: '} │
╰────────────────────────────────────────────────────────────╯
```
Required arguments:
- `--job-uuid`: Job UUID

View file

@ -0,0 +1,462 @@
# Python SDK Reference
## Shared Types
```python
from llama_stack_client.types import (
AgentConfig,
BatchCompletion,
CompletionMessage,
ContentDelta,
Document,
InterleavedContent,
InterleavedContentItem,
Message,
ParamType,
QueryConfig,
QueryResult,
ReturnType,
SafetyViolation,
SamplingParams,
ScoringResult,
SystemMessage,
ToolCall,
ToolParamDefinition,
ToolResponseMessage,
URL,
UserMessage,
)
```
## Toolgroups
Types:
```python
from llama_stack_client.types import (
ListToolGroupsResponse,
ToolGroup,
ToolgroupListResponse,
)
```
Methods:
- <code title="get /v1/toolgroups">client.toolgroups.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/toolgroups.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/toolgroup_list_response.py">ToolgroupListResponse</a></code>
- <code title="get /v1/toolgroups/{toolgroup_id}">client.toolgroups.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/toolgroups.py">get</a>(toolgroup_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_group.py">ToolGroup</a></code>
- <code title="post /v1/toolgroups">client.toolgroups.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/toolgroups.py">register</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/toolgroup_register_params.py">params</a>) -> None</code>
- <code title="delete /v1/toolgroups/{toolgroup_id}">client.toolgroups.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/toolgroups.py">unregister</a>(toolgroup_id) -> None</code>
## Tools
Types:
```python
from llama_stack_client.types import ListToolsResponse, Tool, ToolListResponse
```
Methods:
- <code title="get /v1/tools">client.tools.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/tools.py">list</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_list_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_list_response.py">ToolListResponse</a></code>
- <code title="get /v1/tools/{tool_name}">client.tools.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/tools.py">get</a>(tool_name) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool.py">Tool</a></code>
## ToolRuntime
Types:
```python
from llama_stack_client.types import ToolDef, ToolInvocationResult
```
Methods:
- <code title="post /v1/tool-runtime/invoke">client.tool_runtime.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/tool_runtime/tool_runtime.py">invoke_tool</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_runtime_invoke_tool_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_invocation_result.py">ToolInvocationResult</a></code>
- <code title="get /v1/tool-runtime/list-tools">client.tool_runtime.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/tool_runtime/tool_runtime.py">list_tools</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_runtime_list_tools_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_def.py">JSONLDecoder[ToolDef]</a></code>
### RagTool
Methods:
- <code title="post /v1/tool-runtime/rag-tool/insert">client.tool_runtime.rag_tool.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/tool_runtime/rag_tool.py">insert</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_runtime/rag_tool_insert_params.py">params</a>) -> None</code>
- <code title="post /v1/tool-runtime/rag-tool/query">client.tool_runtime.rag_tool.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/tool_runtime/rag_tool.py">query</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/tool_runtime/rag_tool_query_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/shared/query_result.py">QueryResult</a></code>
## Agents
Types:
```python
from llama_stack_client.types import (
InferenceStep,
MemoryRetrievalStep,
ShieldCallStep,
ToolExecutionStep,
ToolResponse,
AgentCreateResponse,
)
```
Methods:
- <code title="post /v1/agents">client.agents.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/agents/agents.py">create</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agent_create_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agent_create_response.py">AgentCreateResponse</a></code>
- <code title="delete /v1/agents/{agent_id}">client.agents.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/agents/agents.py">delete</a>(agent_id) -> None</code>
### Session
Types:
```python
from llama_stack_client.types.agents import Session, SessionCreateResponse
```
Methods:
- <code title="post /v1/agents/{agent_id}/session">client.agents.session.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/agents/session.py">create</a>(agent_id, \*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agents/session_create_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agents/session_create_response.py">SessionCreateResponse</a></code>
- <code title="get /v1/agents/{agent_id}/session/{session_id}">client.agents.session.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/agents/session.py">retrieve</a>(session_id, \*, agent_id, \*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agents/session_retrieve_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agents/session.py">Session</a></code>
- <code title="delete /v1/agents/{agent_id}/session/{session_id}">client.agents.session.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/agents/session.py">delete</a>(session_id, \*, agent_id) -> None</code>
### Steps
Types:
```python
from llama_stack_client.types.agents import StepRetrieveResponse
```
Methods:
- <code title="get /v1/agents/{agent_id}/session/{session_id}/turn/{turn_id}/step/{step_id}">client.agents.steps.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/agents/steps.py">retrieve</a>(step_id, \*, agent_id, session_id, turn_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agents/step_retrieve_response.py">StepRetrieveResponse</a></code>
### Turn
Types:
```python
from llama_stack_client.types.agents import Turn, TurnCreateResponse
```
Methods:
- <code title="post /v1/agents/{agent_id}/session/{session_id}/turn">client.agents.turn.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/agents/turn.py">create</a>(session_id, \*, agent_id, \*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agents/turn_create_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agents/turn_create_response.py">TurnCreateResponse</a></code>
- <code title="get /v1/agents/{agent_id}/session/{session_id}/turn/{turn_id}">client.agents.turn.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/agents/turn.py">retrieve</a>(turn_id, \*, agent_id, session_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/agents/turn.py">Turn</a></code>
## BatchInference
Types:
```python
from llama_stack_client.types import BatchInferenceChatCompletionResponse
```
Methods:
- <code title="post /v1/batch-inference/chat-completion">client.batch_inference.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/batch_inference.py">chat_completion</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/batch_inference_chat_completion_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/batch_inference_chat_completion_response.py">BatchInferenceChatCompletionResponse</a></code>
- <code title="post /v1/batch-inference/completion">client.batch_inference.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/batch_inference.py">completion</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/batch_inference_completion_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/shared/batch_completion.py">BatchCompletion</a></code>
## Datasets
Types:
```python
from llama_stack_client.types import (
ListDatasetsResponse,
DatasetRetrieveResponse,
DatasetListResponse,
)
```
Methods:
- <code title="get /v1/datasets/{dataset_id}">client.datasets.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/datasets.py">retrieve</a>(dataset_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/dataset_retrieve_response.py">Optional[DatasetRetrieveResponse]</a></code>
- <code title="get /v1/datasets">client.datasets.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/datasets.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/dataset_list_response.py">DatasetListResponse</a></code>
- <code title="post /v1/datasets">client.datasets.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/datasets.py">register</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/dataset_register_params.py">params</a>) -> None</code>
- <code title="delete /v1/datasets/{dataset_id}">client.datasets.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/datasets.py">unregister</a>(dataset_id) -> None</code>
## Eval
Types:
```python
from llama_stack_client.types import EvaluateResponse, Job
```
Methods:
- <code title="post /v1/eval/tasks/{benchmark_id}/evaluations">client.eval.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/eval/eval.py">evaluate_rows</a>(benchmark_id, \*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/eval_evaluate_rows_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/evaluate_response.py">EvaluateResponse</a></code>
- <code title="post /v1/eval/tasks/{benchmark_id}/jobs">client.eval.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/eval/eval.py">run_eval</a>(benchmark_id, \*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/eval_run_eval_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/job.py">Job</a></code>
### Jobs
Types:
```python
from llama_stack_client.types.eval import JobStatusResponse
```
Methods:
- <code title="get /v1/eval/tasks/{benchmark_id}/jobs/{job_id}/result">client.eval.jobs.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/eval/jobs.py">retrieve</a>(job_id, \*, benchmark_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/evaluate_response.py">EvaluateResponse</a></code>
- <code title="delete /v1/eval/tasks/{benchmark_id}/jobs/{job_id}">client.eval.jobs.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/eval/jobs.py">cancel</a>(job_id, \*, benchmark_id) -> None</code>
- <code title="get /v1/eval/tasks/{benchmark_id}/jobs/{job_id}">client.eval.jobs.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/eval/jobs.py">status</a>(job_id, \*, benchmark_id) -> Optional[JobStatusResponse]</code>
## Inspect
Types:
```python
from llama_stack_client.types import HealthInfo, ProviderInfo, RouteInfo, VersionInfo
```
Methods:
- <code title="get /v1/health">client.inspect.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/inspect.py">health</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/health_info.py">HealthInfo</a></code>
- <code title="get /v1/version">client.inspect.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/inspect.py">version</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/version_info.py">VersionInfo</a></code>
## Inference
Types:
```python
from llama_stack_client.types import (
CompletionResponse,
EmbeddingsResponse,
TokenLogProbs,
InferenceChatCompletionResponse,
InferenceCompletionResponse,
)
```
Methods:
- <code title="post /v1/inference/chat-completion">client.inference.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/inference.py">chat_completion</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/inference_chat_completion_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/inference_chat_completion_response.py">InferenceChatCompletionResponse</a></code>
- <code title="post /v1/inference/completion">client.inference.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/inference.py">completion</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/inference_completion_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/inference_completion_response.py">InferenceCompletionResponse</a></code>
- <code title="post /v1/inference/embeddings">client.inference.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/inference.py">embeddings</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/inference_embeddings_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/embeddings_response.py">EmbeddingsResponse</a></code>
## VectorIo
Types:
```python
from llama_stack_client.types import QueryChunksResponse
```
Methods:
- <code title="post /v1/vector-io/insert">client.vector_io.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/vector_io.py">insert</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/vector_io_insert_params.py">params</a>) -> None</code>
- <code title="post /v1/vector-io/query">client.vector_io.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/vector_io.py">query</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/vector_io_query_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/query_chunks_response.py">QueryChunksResponse</a></code>
## VectorDBs
Types:
```python
from llama_stack_client.types import (
ListVectorDBsResponse,
VectorDBRetrieveResponse,
VectorDBListResponse,
VectorDBRegisterResponse,
)
```
Methods:
- <code title="get /v1/vector-dbs/{vector_db_id}">client.vector_dbs.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/vector_dbs.py">retrieve</a>(vector_db_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/vector_db_retrieve_response.py">Optional[VectorDBRetrieveResponse]</a></code>
- <code title="get /v1/vector-dbs">client.vector_dbs.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/vector_dbs.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/vector_db_list_response.py">VectorDBListResponse</a></code>
- <code title="post /v1/vector-dbs">client.vector_dbs.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/vector_dbs.py">register</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/vector_db_register_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/vector_db_register_response.py">VectorDBRegisterResponse</a></code>
- <code title="delete /v1/vector-dbs/{vector_db_id}">client.vector_dbs.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/vector_dbs.py">unregister</a>(vector_db_id) -> None</code>
## Models
Types:
```python
from llama_stack_client.types import ListModelsResponse, Model, ModelListResponse
```
Methods:
- <code title="get /v1/models/{model_id}">client.models.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/models.py">retrieve</a>(model_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/model.py">Optional[Model]</a></code>
- <code title="get /v1/models">client.models.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/models.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/model_list_response.py">ModelListResponse</a></code>
- <code title="post /v1/models">client.models.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/models.py">register</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/model_register_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/model.py">Model</a></code>
- <code title="delete /v1/models/{model_id}">client.models.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/models.py">unregister</a>(model_id) -> None</code>
## PostTraining
Types:
```python
from llama_stack_client.types import ListPostTrainingJobsResponse, PostTrainingJob
```
Methods:
- <code title="post /v1/post-training/preference-optimize">client.post_training.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/post_training/post_training.py">preference_optimize</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training_preference_optimize_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training_job.py">PostTrainingJob</a></code>
- <code title="post /v1/post-training/supervised-fine-tune">client.post_training.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/post_training/post_training.py">supervised_fine_tune</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training_supervised_fine_tune_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training_job.py">PostTrainingJob</a></code>
### Job
Types:
```python
from llama_stack_client.types.post_training import (
JobListResponse,
JobArtifactsResponse,
JobStatusResponse,
)
```
Methods:
- <code title="get /v1/post-training/jobs">client.post_training.job.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/post_training/job.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training/job_list_response.py">JobListResponse</a></code>
- <code title="get /v1/post-training/job/artifacts">client.post_training.job.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/post_training/job.py">artifacts</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training/job_artifacts_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training/job_artifacts_response.py">Optional[JobArtifactsResponse]</a></code>
- <code title="post /v1/post-training/job/cancel">client.post_training.job.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/post_training/job.py">cancel</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training/job_cancel_params.py">params</a>) -> None</code>
- <code title="get /v1/post-training/job/status">client.post_training.job.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/post_training/job.py">status</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training/job_status_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/post_training/job_status_response.py">Optional[JobStatusResponse]</a></code>
## Providers
Types:
```python
from llama_stack_client.types import ListProvidersResponse, ProviderListResponse
```
Methods:
- <code title="get /v1/inspect/providers">client.providers.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/providers.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/provider_list_response.py">ProviderListResponse</a></code>
## Routes
Types:
```python
from llama_stack_client.types import ListRoutesResponse, RouteListResponse
```
Methods:
- <code title="get /v1/inspect/routes">client.routes.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/routes.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/route_list_response.py">RouteListResponse</a></code>
## Safety
Types:
```python
from llama_stack_client.types import RunShieldResponse
```
Methods:
- <code title="post /v1/safety/run-shield">client.safety.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/safety.py">run_shield</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/safety_run_shield_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/run_shield_response.py">RunShieldResponse</a></code>
## Shields
Types:
```python
from llama_stack_client.types import ListShieldsResponse, Shield, ShieldListResponse
```
Methods:
- <code title="get /v1/shields/{identifier}">client.shields.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/shields.py">retrieve</a>(identifier) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/shield.py">Optional[Shield]</a></code>
- <code title="get /v1/shields">client.shields.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/shields.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/shield_list_response.py">ShieldListResponse</a></code>
- <code title="post /v1/shields">client.shields.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/shields.py">register</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/shield_register_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/shield.py">Shield</a></code>
## SyntheticDataGeneration
Types:
```python
from llama_stack_client.types import SyntheticDataGenerationResponse
```
Methods:
- <code title="post /v1/synthetic-data-generation/generate">client.synthetic_data_generation.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/synthetic_data_generation.py">generate</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/synthetic_data_generation_generate_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/synthetic_data_generation_response.py">SyntheticDataGenerationResponse</a></code>
## Telemetry
Types:
```python
from llama_stack_client.types import (
QuerySpansResponse,
SpanWithStatus,
Trace,
TelemetryGetSpanResponse,
TelemetryGetSpanTreeResponse,
TelemetryQuerySpansResponse,
TelemetryQueryTracesResponse,
)
```
Methods:
- <code title="get /v1/telemetry/traces/{trace_id}/spans/{span_id}">client.telemetry.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/telemetry.py">get_span</a>(span_id, \*, trace_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_get_span_response.py">TelemetryGetSpanResponse</a></code>
- <code title="get /v1/telemetry/spans/{span_id}/tree">client.telemetry.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/telemetry.py">get_span_tree</a>(span_id, \*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_get_span_tree_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_get_span_tree_response.py">TelemetryGetSpanTreeResponse</a></code>
- <code title="get /v1/telemetry/traces/{trace_id}">client.telemetry.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/telemetry.py">get_trace</a>(trace_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/trace.py">Trace</a></code>
- <code title="post /v1/telemetry/events">client.telemetry.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/telemetry.py">log_event</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_log_event_params.py">params</a>) -> None</code>
- <code title="get /v1/telemetry/spans">client.telemetry.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/telemetry.py">query_spans</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_query_spans_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_query_spans_response.py">TelemetryQuerySpansResponse</a></code>
- <code title="get /v1/telemetry/traces">client.telemetry.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/telemetry.py">query_traces</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_query_traces_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_query_traces_response.py">TelemetryQueryTracesResponse</a></code>
- <code title="post /v1/telemetry/spans/export">client.telemetry.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/telemetry.py">save_spans_to_dataset</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/telemetry_save_spans_to_dataset_params.py">params</a>) -> None</code>
## Datasetio
Types:
```python
from llama_stack_client.types import PaginatedRowsResult
```
Methods:
- <code title="post /v1/datasetio/rows">client.datasetio.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/datasetio.py">append_rows</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/datasetio_append_rows_params.py">params</a>) -> None</code>
- <code title="get /v1/datasetio/rows">client.datasetio.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/datasetio.py">get_rows_paginated</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/datasetio_get_rows_paginated_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/paginated_rows_result.py">PaginatedRowsResult</a></code>
## Scoring
Types:
```python
from llama_stack_client.types import ScoringScoreResponse, ScoringScoreBatchResponse
```
Methods:
- <code title="post /v1/scoring/score">client.scoring.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/scoring.py">score</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/scoring_score_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/scoring_score_response.py">ScoringScoreResponse</a></code>
- <code title="post /v1/scoring/score-batch">client.scoring.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/scoring.py">score_batch</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/scoring_score_batch_params.py">params</a>) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/scoring_score_batch_response.py">ScoringScoreBatchResponse</a></code>
## ScoringFunctions
Types:
```python
from llama_stack_client.types import (
ListScoringFunctionsResponse,
ScoringFn,
ScoringFunctionListResponse,
)
```
Methods:
- <code title="get /v1/scoring-functions/{scoring_fn_id}">client.scoring_functions.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/scoring_functions.py">retrieve</a>(scoring_fn_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/scoring_fn.py">Optional[ScoringFn]</a></code>
- <code title="get /v1/scoring-functions">client.scoring_functions.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/scoring_functions.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/scoring_function_list_response.py">ScoringFunctionListResponse</a></code>
- <code title="post /v1/scoring-functions">client.scoring_functions.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/scoring_functions.py">register</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/scoring_function_register_params.py">params</a>) -> None</code>
## Benchmarks
Types:
```python
from llama_stack_client.types import (
Benchmark,
ListBenchmarksResponse,
BenchmarkListResponse,
)
```
Methods:
- <code title="get /v1/eval-tasks/{benchmark_id}">client.benchmarks.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/benchmarks.py">retrieve</a>(benchmark_id) -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/benchmark.py">Optional[Benchmark]</a></code>
- <code title="get /v1/eval-tasks">client.benchmarks.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/benchmarks.py">list</a>() -> <a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/benchmark_list_response.py">BenchmarkListResponse</a></code>
- <code title="post /v1/eval-tasks">client.benchmarks.<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/resources/benchmarks.py">register</a>(\*\*<a href="https://github.com/meta-llama/llama-stack-client-python/tree/main/src/llama_stack_client/types/benchmark_register_params.py">params</a>) -> None</code>