# is_xxh3_128_hexdigest

> **Function** in `langgraph`

📖 [View in docs](https://reference.langchain.com/python/langgraph/pregel/_utils/is_xxh3_128_hexdigest)

Check if the given string matches the format of xxh3_128_hexdigest.

## Signature

```python
is_xxh3_128_hexdigest(
    value: str,
) -> bool
```

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[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/644815f9e5bc52ad8f7a5227a456227e9c3e639b/libs/langgraph/langgraph/pregel/_utils.py#L289)