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bind_tools() — langchain Function Reference

Architecture documentation for the bind_tools() function in test_tool_selection.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

Dependency Diagram

graph TD
  8c05d6e0_bec9_08ba_634c_28e62e666d85["bind_tools()"]
  3502e89c_e0e8_295a_749b_99c4941d1f17["FakeModel"]
  8c05d6e0_bec9_08ba_634c_28e62e666d85 -->|defined in| 3502e89c_e0e8_295a_749b_99c4941d1f17
  style 8c05d6e0_bec9_08ba_634c_28e62e666d85 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_tool_selection.py lines 59–94

    def bind_tools(
        self,
        tools: Sequence[dict[str, Any] | type[BaseModel] | Callable[..., Any] | BaseTool],
        **_kwargs: Any,
    ) -> Runnable[LanguageModelInput, AIMessage]:
        if len(tools) == 0:
            msg = "Must provide at least one tool"
            raise ValueError(msg)

        tool_dicts = []
        for tool_ in tools:
            if isinstance(tool_, dict):
                tool_dicts.append(tool_)
                continue
            if not isinstance(tool_, BaseTool):
                msg = "Only BaseTool and dict is supported by FakeToolCallingModel.bind_tools"
                raise TypeError(msg)

            # NOTE: this is a simplified tool spec for testing purposes only
            if self.tool_style == "openai":
                tool_dicts.append(
                    {
                        "type": "function",
                        "function": {
                            "name": tool_.name,
                        },
                    }
                )
            elif self.tool_style == "anthropic":
                tool_dicts.append(
                    {
                        "name": tool_.name,
                    }
                )

        return self.bind(tools=tool_dicts)

Domain

Subdomains

Defined In

Source

Frequently Asked Questions

What does bind_tools() do?
bind_tools() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_tool_selection.py.
Where is bind_tools() defined?
bind_tools() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_tool_selection.py at line 59.

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