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

# Authentication

folk's API uses API keys to authenticate requests. You can view and manage your API keys in your [workspace settings](https://app.folk.app/apps/contacts/network/settings/api-keys) under the "API" section.

To authenticate a request, you need to include the API key in the `Authorization` header using the bearer token scheme.

```
Authorization: Bearer <your-api-key>
```

API requests without authentication will fail with a `401 Unauthorized` status code.