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

# unauthorized

> Missing API credential. Send a vt_ token in the Authorization header.

|             |                                              |
| ----------- | -------------------------------------------- |
| HTTP status | `401 Unauthorized`                           |
| `code`      | `unauthorized`                               |
| `type`      | `https://docs.vturb.com/errors/unauthorized` |

Missing API credential. Send a vt\_ token in the Authorization header.

```json theme={null}
{
  "type": "https://docs.vturb.com/errors/unauthorized",
  "code": "unauthorized",
  "message": "Missing API credential. Send a vt_ token in the Authorization header.",
  "request_id": "0b5e7a1c-9f3d-4c2b-8e1a-7d6c5b4a3f21"
}
```