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

# authentication_required

> Authentication required: HTTP 401 from the Rask API v3. What it means, what to do and which operations return it.

| Status | `retry` | `recommendation` |
| - | - | - |
| 401 | `none` | `fix_request` |

## What happened

Authentication required. For example: No bearer credential was sent.

## What to do

Send 'Authorization: Bearer \<API key>'; SDKs read RASK\_API\_KEY.

[Authentication](https://docs.api.rask.ai/authentication.md#what-each-401-means) covers every 401. Keys are created in the web app, under [**Settings -> API keys**](https://app.rask.ai/account/api-keys).

`fix_request`: change the request or its inputs; sent unchanged it fails again.

`none`: do not retry the request unchanged.

## Example

```json theme={null}
{
  "type": "https://docs.api.rask.ai/errors/authentication_required",
  "title": "Authentication required",
  "status": 401,
  "detail": "No bearer credential was sent.",
  "instance": "urn:uuid:7d5c0e9a-3f1b-4c2e-9a8d-6b4f2e1c0d93",
  "code": "authentication_required",
  "retryable": false,
  "retry": "none",
  "recommendation": "fix_request",
  "hint": "Send 'Authorization: Bearer <API key>'; SDKs read RASK_API_KEY.",
  "errors": []
}
```

## Operations that return it

Most operations: 82 of 82 declare it. The reference page of each operation lists its errors.


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