llama-stack/docs/cli_reference.md

Llama CLI Reference

The llama CLI tool helps you setup and use the Llama toolchain & agentic systems. It should be available on your path after installing the llama-toolchain package.

$ llama --help

Welcome to the Llama CLI

Usage: llama [-h] {download,inference,model} ...


Options:
  -h, --help            Show this help message and exit


Subcommands:
  {download,inference,model}

Step 1. Get the models

First, you need models locally. You can get the models from HuggingFace or directly from Meta. The download command streamlines the process.

$ llama download --help
usage: llama download [-h] [--hf-token HF_TOKEN] [--ignore-patterns IGNORE_PATTERNS] repo_id

Download a model from the Hugging Face Hub

positional arguments:
  repo_id               Name of the repository on Hugging Face Hub eg. llhf/Meta-Llama-3.1-70B-Instruct

options:
  -h, --help            show this help message and exit
  --hf-token HF_TOKEN   Hugging Face API token. Needed for gated models like Llama2. Will also try to read environment variable `HF_TOKEN` as default.
  --ignore-patterns IGNORE_PATTERNS
                        If provided, files matching any of the patterns are not downloaded. Defaults to ignoring safetensors files to avoid downloading duplicate weights.

# Here are some examples on how to use this command:

llama download --repo-id meta-llama/Llama-2-7b-hf --hf-token <HF_TOKEN>
llama download --repo-id meta-llama/Llama-2-7b-hf --output-dir /data/my_custom_dir --hf-token <HF_TOKEN>
HF_TOKEN=<HF_TOKEN> llama download --repo-id meta-llama/Llama-2-7b-hf

The output directory will be used to load models and tokenizers for inference.

1. Create and get a Hugging Face access token here
2. Set the HF_TOKEN environment variable

export HF_TOKEN=YOUR_TOKEN_HERE
llama download meta-llama/Meta-Llama-3.1-70B-Instruct

Step 2: Understand the models

The llama model command helps you explore the model’s interface.

$ llama model --help
usage: llama model [-h] {template} ...


Describe llama model interfaces


options:
  -h, --help  show this help message and exit


model_subcommands:
  {template}


Example: llama model <subcommand> <options>

You can run llama model template see all of the templates and their tokens:

$ llama model template


system-message-builtin-and-custom-tools
system-message-builtin-tools-only
system-message-custom-tools-only
system-message-default
assistant-message-builtin-tool-call
assistant-message-custom-tool-call
assistant-message-default
tool-message-failure
tool-message-success
user-message-default

And fetch an example by passing it to --name:

llama model template --name tool-message-success


llama model template --name tool-message-success
<|start_header_id|>ipython<|end_header_id|>


completed
[stdout]{"results":["something something"]}[/stdout]<|eot_id|>

Step 3. Start the inference server

Once you have a model, the magic begins with inference. The llama inference command can help you configure and launch the Llama Stack inference server.

$ llama inference --help


usage: llama inference [-h] {start,configure} ...


Run inference on a llama model


options:
  -h, --help         show this help message and exit


inference_subcommands:
  {start,configure}


Example: llama inference start <options>

Run llama inference configure to setup your configuration at ~/.llama/configs/inference.yaml. You’ll set up variables like:

• the directory where you stored the models you downloaded from step 1
• the model parallel size (1 for 8B models, 8 for 70B/405B)

Once you’ve configured the inference server, run llama inference start. The model will load into GPU and you’ll be able to send requests once you see the server ready.

If you want to use a different model, re-run llama inference configure to update the model path and llama inference start to start again.

Run llama inference --help for more information.

Step 4. Start the agentic system

The llama agentic_system command sets up the configuration file the agentic client code expects.

For example, let’s run the included chat app:

llama agentic_system configure
mesop app/main.py

For more information run llama agentic_system --help.