# internal_call_metadata

> **Function** in `langchain`

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

Return metadata that marks a model call as internal to middleware.

## Signature

```python
internal_call_metadata() -> dict[str, Any]
```

## Returns

`dict[str, Any]`

A mapping to merge into a model call's `config["metadata"]`.

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/34489d61433cbf5044a630de2e7797e361672900/libs/langchain_v1/langchain/agents/middleware/internal_call_transformer.py#L34)