# rate_limited

> The key (120 units a minute) or the agency (600 units a minute) used its budget for the current window.

**Rate limit reached** · HTTP 429

## What it means

The key (120 units a minute) or the agency (600 units a minute) used its budget for the current window.

## What to do

Wait the number of seconds in `Retry-After`, then retry. Spread bursts; read the `RateLimit` header to pace yourself.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/rate_limited",
  "title": "Rate limit reached",
  "status": 429,
  "detail": "The key (120 units a minute) or the agency (600 units a minute) used its budget for the current window.",
  "code": "rate_limited",
  "requestId": "req_…"
}
```

How to read any error: [Errors guide](https://api.bymundi.com/docs/guides/errors.md).