> For the complete documentation index, see [llms.txt](https://docs.chatastra.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chatastra.ai/astrapay-api-docs/getting-started/rate-limits.md).

# Rate Limits

| Limit        | Window     | Scope       |
| ------------ | ---------- | ----------- |
| 100 requests | 60 seconds | Per API key |

When exceeded, the API returns `429 RATE_LIMIT_EXCEEDED`:

```json
{
  "error": {
    "code": "RATE_LIMIT_EXCEEDED",
    "message": "Too many requests",
    "status": 429
  }
}
```

Implement exponential backoff when you receive a `429`. Start with a 1s delay and double on each retry, up to a maximum of 60s.