WrongResponseFieldsMiddleware Class — langchain Architecture

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_type_errors.py lines 135–148

class WrongResponseFieldsMiddleware(
    AgentMiddleware[AgentState[AnalysisResult], ContextT, AnalysisResult]
):
    def wrap_model_call(
        self,
        request: ModelRequest[ContextT],
        handler: Callable[[ModelRequest[ContextT]], ModelResponse[AnalysisResult]],
    ) -> ModelResponse[AnalysisResult]:
        response = handler(request)
        if response.structured_response is not None:
            # TYPE ERROR: 'summary' doesn't exist on AnalysisResult
            summary: str = response.structured_response.summary  # type: ignore[attr-defined]
            _ = summary
        return response