> For the complete documentation index, see [llms.txt](https://help.simplephones.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.simplephones.ai/developers/authentication.md).

# Authentication

To view or reset your API key, go to your account settings at simplephones.ai/settings

For all API requests, include your API key in the `Authorization` header like so:

```
Authorization: Bearer <API KEY>
```