# CustomStreamEvent

> **Class** in `langchain_core`

📖 [View in docs](https://reference.langchain.com/python/langchain-core/runnables/schema/CustomStreamEvent)

Custom stream event created by the user.

## Signature

```python
CustomStreamEvent()
```

## Extends

- `BaseStreamEvent`

## Properties

- `event`
- `name`
- `data`

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/9f232caa7a8fe1ca042a401942d5d90d54ceb1a6/libs/core/langchain_core/runnables/schema.py#L176)