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

# Authentication

These tutorials describe how to connect fylr to authentication services that hold existing accounts. So that fylr will allow log in with these accounts.