AnalysisResponseMiddleware Class — langchain Architecture

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_typing.py lines 154–169

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

    def wrap_model_call(
        self,
        request: ModelRequest[ContextT],
        handler: Callable[[ModelRequest[ContextT]], ModelResponse[AnalysisResult]],
    ) -> ModelResponse[AnalysisResult]:
        response = handler(request)
        # Full type safety on structured_response
        if response.structured_response is not None:
            _sentiment: str = response.structured_response.sentiment
            _confidence: float = response.structured_response.confidence
        return response