# ProgressCallback

> **Class** in `langchain_mcp_adapters`

📖 [View in docs](https://reference.langchain.com/python/langchain-mcp-adapters/callbacks/ProgressCallback)

Light wrapper around the mcp.shared.session.ProgressFnT.

Injects callback context as the last argument.

## Signature

```python
ProgressCallback()
```

## Extends

- `Protocol`

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[View source on GitHub](https://github.com/langchain-ai/langchain-mcp-adapters/blob/d0cb74e2a7a821bb3f4978b270c7add5a3940666/langchain_mcp_adapters/callbacks.py#L52)