---
title: "Event"
---

## Example Usage

```python
from openrouter.components import Event

# Open enum: unrecognized values are captured as UnrecognizedStr
value: Event = "adapter_request"
```


## Values

This is an open enum. Unrecognized values will not fail type checks.

- `"adapter_request"`
- `"upstream_headers_received"`
- `"first_token_received"`
- `"upstream_body_ended"`