call() — langchain Function Reference

Architecture documentation for the __call__() function in human_in_the_loop.py from the langchain codebase.

Function python LangChainCore Runnables

Entity Profile

LangChainCore→ Runnables→ __call__() — langchain Function Reference

Dependency Diagram

graph TD
  0da3a597_00c9_cfe9_dfcb_c56fac9b75c0["__call__()"]
  2d94a030_06fd_9c42_9c78_19544d494627["_DescriptionFactory"]
  0da3a597_00c9_cfe9_dfcb_c56fac9b75c0 -->|defined in| 2d94a030_06fd_9c42_9c78_19544d494627
  style 0da3a597_00c9_cfe9_dfcb_c56fac9b75c0 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/langchain/agents/middleware/human_in_the_loop.py lines 111–115

    def __call__(
        self, tool_call: ToolCall, state: AgentState[Any], runtime: Runtime[ContextT]
    ) -> str:
        """Generate a description for a tool call."""
        ...