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feat: RFC: tools API rework
# What does this PR do?
This PR proposes updates to the tools API in Inference and Agent.
Goals:
1. Agent's tool specification should be consistent with Inference's tool spec, but with add-ons.
2. Formal types should be defined for built in tools. Currently Agent tools args are untyped, e.g. how does one know that `builtin::rag_tool` takes a `vector_db_ids` param or even how to know 'builtin::rag_tool' is even available (in code, outside of docs)?
Inference:
1. BuiltinTool is to be removed and replaced by a formal `type` parameter.
2. 'brave_search' is replaced by 'web_search' to be more generic. It will still be translated back to brave_search when the prompt is constructed to be consistent with model training.
3. I'm not sure what `photogen` is. Maybe it can be removed?
Agent:
1. Uses the same format as in Inference for builtin tools.
2. New tools types are added, i.e. knowledge_sesarch (currently rag_tool), and MCP tool.
3. Toolgroup as a concept will be removed since it's really only used for MCP.
4. Instead MCPTool is its own type and available tools provided by the server will be expanded by default. Users can specify a subset of tool names if desired.
Example snippet:
```
agent = Agent(
client,
model=model_id,
instructions="You are a helpful assistant. Use the tools you have access to for providing relevant answers.",
tools=[
KnowledgeSearchTool(vector_store_id="1234"),
KnowledgeSearchTool(vector_store_id="5678", name="paper_search", description="Search research papers"),
KnowledgeSearchTool(vector_store_id="1357", name="wiki_search", description="Search wiki pages"),
# no need to register toolgroup, just pass in the server uri
# all available tools will be used
MCPTool(server_uri="http://localhost:8000/sse"),
# can specify a subset of available tools
MCPTool(server_uri="http://localhost:8000/sse", tool_names=["list_directory"]),
MCPTool(server_uri="http://localhost:8000/sse", tool_names=["list_directory"]),
# custom tool
my_custom_tool,
]
)
```
## Test Plan
# What does this PR do?
## Test Plan
# What does this PR do?
## Test Plan
This commit is contained in:
Eric Huang
parent
39e094736f
commit
7027b537e0
22 changed files with 951 additions and 525 deletions
251
docs/_static/llama-stack-spec.html
vendored
251
docs/_static/llama-stack-spec.html
vendored
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@ -3798,6 +3798,21 @@
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],
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"title": "AppendRowsRequest"
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},
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"CodeInterpreterTool": {
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"type": "object",
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"properties": {
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"type": {
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"type": "string",
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"const": "code_interpreter",
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"default": "code_interpreter"
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}
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},
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"additionalProperties": false,
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"required": [
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"type"
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],
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"title": "CodeInterpreterTool"
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},
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"CompletionMessage": {
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"type": "object",
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"properties": {
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@ -3837,6 +3852,34 @@
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"title": "CompletionMessage",
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"description": "A message containing the model's (assistant) response in a chat conversation."
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},
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"FunctionTool": {
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"type": "object",
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"properties": {
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"type": {
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"type": "string",
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"const": "function",
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"default": "function"
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},
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"name": {
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"type": "string"
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},
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"description": {
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"type": "string"
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},
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"parameters": {
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"type": "object",
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"additionalProperties": {
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"$ref": "#/components/schemas/ToolParamDefinition"
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}
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}
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},
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"additionalProperties": false,
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"required": [
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"type",
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"name"
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],
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"title": "FunctionTool"
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},
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"GrammarResponseFormat": {
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"type": "object",
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"properties": {
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@ -4138,25 +4181,21 @@
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"ToolCall": {
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"type": "object",
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"properties": {
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"type": {
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"type": "string",
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"enum": [
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"function",
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"web_search",
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"wolfram_alpha",
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"code_interpreter"
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],
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"title": "ToolType"
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},
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"call_id": {
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"type": "string"
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},
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"tool_name": {
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"oneOf": [
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{
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"type": "string",
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"enum": [
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"brave_search",
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"wolfram_alpha",
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"photogen",
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"code_interpreter"
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],
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"title": "BuiltinTool"
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},
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{
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"type": "string"
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}
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]
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"type": "string"
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},
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"arguments": {
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"oneOf": [
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@ -4237,48 +4276,13 @@
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},
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"additionalProperties": false,
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"required": [
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"type",
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"call_id",
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"tool_name",
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"arguments"
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],
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"title": "ToolCall"
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},
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"ToolDefinition": {
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"type": "object",
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"properties": {
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"tool_name": {
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"oneOf": [
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{
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"type": "string",
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"enum": [
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"brave_search",
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"wolfram_alpha",
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"photogen",
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"code_interpreter"
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],
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"title": "BuiltinTool"
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},
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{
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"type": "string"
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}
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]
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},
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"description": {
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"type": "string"
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},
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"parameters": {
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"type": "object",
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"additionalProperties": {
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"$ref": "#/components/schemas/ToolParamDefinition"
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}
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}
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},
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"additionalProperties": false,
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"required": [
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"tool_name"
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],
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"title": "ToolDefinition"
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},
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"ToolParamDefinition": {
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"type": "object",
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"properties": {
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@ -4428,6 +4432,36 @@
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"title": "UserMessage",
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"description": "A message from the user in a chat conversation."
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},
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"WebSearchTool": {
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"type": "object",
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"properties": {
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"type": {
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"type": "string",
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"const": "web_search",
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"default": "web_search"
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}
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},
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"additionalProperties": false,
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"required": [
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"type"
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],
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"title": "WebSearchTool"
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},
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"WolframAlphaTool": {
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"type": "object",
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"properties": {
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"type": {
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"type": "string",
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"const": "wolfram_alpha",
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"default": "wolfram_alpha"
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}
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},
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"additionalProperties": false,
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"required": [
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"type"
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],
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"title": "WolframAlphaTool"
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},
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"BatchChatCompletionRequest": {
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"type": "object",
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"properties": {
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@ -4449,7 +4483,29 @@
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"tools": {
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"type": "array",
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"items": {
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"$ref": "#/components/schemas/ToolDefinition"
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"oneOf": [
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{
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"$ref": "#/components/schemas/WebSearchTool"
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},
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{
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"$ref": "#/components/schemas/WolframAlphaTool"
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},
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{
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"$ref": "#/components/schemas/CodeInterpreterTool"
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},
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{
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"$ref": "#/components/schemas/FunctionTool"
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}
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],
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"discriminator": {
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"propertyName": "type",
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"mapping": {
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"web_search": "#/components/schemas/WebSearchTool",
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"wolfram_alpha": "#/components/schemas/WolframAlphaTool",
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"code_interpreter": "#/components/schemas/CodeInterpreterTool",
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"function": "#/components/schemas/FunctionTool"
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}
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}
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}
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},
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"tool_choice": {
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@ -4734,6 +4790,41 @@
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"title": "ToolConfig",
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"description": "Configuration for tool use."
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},
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"ToolDefinitionDeprecated": {
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"type": "object",
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"properties": {
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"tool_name": {
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"oneOf": [
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{
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"type": "string",
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"enum": [
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"brave_search",
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"wolfram_alpha",
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"code_interpreter"
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],
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"title": "BuiltinTool"
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},
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{
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"type": "string"
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}
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]
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},
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"description": {
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"type": "string"
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},
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"parameters": {
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"type": "object",
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"additionalProperties": {
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"$ref": "#/components/schemas/ToolParamDefinition"
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}
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}
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},
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"additionalProperties": false,
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"required": [
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"tool_name"
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],
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"title": "ToolDefinitionDeprecated"
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},
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"ChatCompletionRequest": {
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"type": "object",
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"properties": {
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@ -4753,10 +4844,42 @@
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"description": "Parameters to control the sampling strategy"
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},
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"tools": {
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"type": "array",
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"items": {
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"$ref": "#/components/schemas/ToolDefinition"
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},
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"oneOf": [
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{
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"type": "array",
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"items": {
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"oneOf": [
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{
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"$ref": "#/components/schemas/WebSearchTool"
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},
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{
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"$ref": "#/components/schemas/WolframAlphaTool"
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},
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{
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"$ref": "#/components/schemas/CodeInterpreterTool"
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},
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{
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"$ref": "#/components/schemas/FunctionTool"
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}
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],
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"discriminator": {
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"propertyName": "type",
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"mapping": {
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"web_search": "#/components/schemas/WebSearchTool",
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"wolfram_alpha": "#/components/schemas/WolframAlphaTool",
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"code_interpreter": "#/components/schemas/CodeInterpreterTool",
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"function": "#/components/schemas/FunctionTool"
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}
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}
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}
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},
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{
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"type": "array",
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"items": {
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"$ref": "#/components/schemas/ToolDefinitionDeprecated"
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}
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}
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],
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"description": "(Optional) List of tool definitions available to the model"
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},
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"tool_choice": {
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@ -5630,21 +5753,7 @@
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"type": "string"
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},
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"tool_name": {
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"oneOf": [
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{
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"type": "string",
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"enum": [
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"brave_search",
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"wolfram_alpha",
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"photogen",
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"code_interpreter"
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],
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"title": "BuiltinTool"
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},
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{
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"type": "string"
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}
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]
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"type": "string"
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},
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"content": {
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"$ref": "#/components/schemas/InterleavedContent"
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