call() — langchain Function Reference

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

Function python LangChainCore ApiManagement

Entity Profile

LangChainCore→ ApiManagement→ __call__() — langchain Function Reference

Dependency Diagram

graph TD
  701e3ebe_62e0_215f_49f1_8ac7cbb83d16["__call__()"]
  b9e1b200_d2c3_8c78_0ad5_22d36065f704["_CallableWithStateAndRuntime"]
  701e3ebe_62e0_215f_49f1_8ac7cbb83d16 -->|defined in| b9e1b200_d2c3_8c78_0ad5_22d36065f704
  style 701e3ebe_62e0_215f_49f1_8ac7cbb83d16 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/langchain/agents/middleware/types.py lines 804–808

    def __call__(
        self, state: StateT_contra, runtime: Runtime[ContextT]
    ) -> dict[str, Any] | Command[Any] | None | Awaitable[dict[str, Any] | Command[Any] | None]:
        """Perform some logic with the state and runtime."""
        ...