SummaryResponseMiddleware Class — langchain Architecture

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_typing.py lines 172–186

class SummaryResponseMiddleware(
    AgentMiddleware[AgentState[SummaryResult], ContextT, SummaryResult]
):
    """Middleware with correctly specified SummaryResult response type."""

    def wrap_model_call(
        self,
        request: ModelRequest[ContextT],
        handler: Callable[[ModelRequest[ContextT]], ModelResponse[SummaryResult]],
    ) -> ModelResponse[SummaryResult]:
        response = handler(request)
        if response.structured_response is not None:
            _summary: str = response.structured_response.summary
            _points: list[str] = response.structured_response.key_points
        return response