> 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="https://3035252822-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FeiBCAl6qTuG0sZpeXLxC%2Fuploads%2FQf7qnhi8HvXIu1gJsT3K%2FAPIKey.png?alt=media&amp;token=13da1399-8787-4424-ada5-e86e00fa2314" alt=""><figcaption></figcaption></figure>

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

```http
Authorization: Bearer CORTEX_API_KEY
```