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86 lines
2.2 KiB
Python
86 lines
2.2 KiB
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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# All rights reserved.
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#
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# This source code is licensed under the terms described in the LICENSE file in
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# the root directory of this source tree.
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from typing import Any, Dict, List, Literal, Optional
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from llama_models.llama3.api.datatypes import ToolPromptFormat
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from llama_models.schema_utils import json_schema_type
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from pydantic import BaseModel, Field
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from typing_extensions import Protocol, runtime_checkable
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from llama_stack.apis.resource import Resource
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from llama_stack.providers.utils.telemetry.trace_protocol import trace_protocol
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@json_schema_type
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class ToolParameter(BaseModel):
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"""Represents a parameter in a tool's function signature"""
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name: str
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type_hint: str
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description: str
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required: bool = True
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default: Optional[Any] = None
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@json_schema_type
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class ToolReturn(BaseModel):
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"""Represents the return type and description of a tool"""
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type_hint: str
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description: str
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@json_schema_type
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class Tool(Resource):
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"""Represents a tool that can be provided by different providers"""
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resource_type: Literal["tool"] = "tool"
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name: str
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description: str
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parameters: List[ToolParameter]
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returns: ToolReturn
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provider_metadata: Optional[Dict[str, Any]] = None
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tool_prompt_format: Optional[ToolPromptFormat] = Field(
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default=ToolPromptFormat.json
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)
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@runtime_checkable
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@trace_protocol
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class Tools(Protocol):
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async def register_tool(
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self,
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tool_id: str,
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name: str,
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description: str,
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parameters: List[ToolParameter],
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returns: ToolReturn,
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provider_metadata: Optional[Dict[str, Any]] = None,
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tool_prompt_format: Optional[ToolPromptFormat] = None,
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) -> Tool:
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"""Register a tool with provider-specific metadata"""
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...
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async def get_tool(
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self,
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identifier: str,
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) -> Tool: ...
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async def list_tools(
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self,
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provider_id: Optional[str] = None,
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) -> List[Tool]:
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"""List tools with optional provider"""
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@runtime_checkable
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@trace_protocol
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class ToolRuntime(Protocol):
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def invoke_tool(self, tool_id: str, args: Dict[str, Any]) -> Any:
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"""Run a tool with the given arguments"""
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...
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