> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cortex.foundation/llms.txt
> Use this file to discover all available pages before exploring further.

# payload_too_large

> Payload too large. HTTP 413.

|           |                                                             |
| --------- | ----------------------------------------------------------- |
| HTTP      | `413`                                                       |
| `code`    | `payload_too_large`                                         |
| `type`    | `https://docs.cortex.foundation/problems/payload_too_large` |
| Retryable | no                                                          |

An upload was larger than the ceiling for the surface it arrived on. A chat or Library attachment can be at most 10 MB, a bug-report screenshot 4 MB, and a dictated audio clip 25 MiB.

```json theme={null}
{
  "type": "https://docs.cortex.foundation/problems/payload_too_large",
  "title": "Payload too large",
  "status": 413,
  "code": "payload_too_large",
  "request_id": "req_…"
}
```

## Related

* [Errors](/reference/errors) - how to branch on `code`, and what not to render from `detail`.
* [Problem catalog](/problems) - every code, its status, and whether retrying helps.
* [Troubleshooting](/getting-started/troubleshooting) - what a message in the product means.