# middleware

> **Module** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/middleware)

Middleware for making it easier to do distributed tracing.

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/19dc497a3d89638e4cc35db72ea1c29cad35cbbf/python/langsmith/middleware.py)