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

# Authentication

API calls need to be authenticated and authorised. You can do this by providing your secret key in the Authorization header of every request you make. You should authenticate your API client with the following header `api-key: SECRET_KEY`

The secret keys however, are to be kept secret.