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

# Authentication

Cortex uses an API key to authenticate HTTP requests. Find your API key in the drop down of your profile where it says View API Keys.

<figure><img src="/files/OIOzRbK2XY9OkqBplhke" alt=""><figcaption></figcaption></figure>

API requests should include your API key in the HTTP header.

```http
Authorization: Bearer CORTEX_API_KEY
```