> For the complete documentation index, see [llms.txt](https://reseller-docs.flashproxy.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://reseller-docs.flashproxy.io/authorization.md).

# Authorization

All endpoints require authentication. You must pass your **API** **key** in the `Authorization` header, like below:

```
Authorization: Bearer <API_KEY>
```