TL:DR; a quick article to help FastAPI users get SAML working on their application.

Getting Started

The code and instructions are found at https://github.com/ais-one/fastapi-saml

• Less than 100 lines of code
• Only 4 dependencies to install
• Requirements and setup are all documented

If there is a problem please raise an issue, so that documentation and code can be improved.

Summary

This may look like a very short article but to get this working took quite a lot of time and effort...

• searching on Google and Stack-Overflow
• choosing which library to use
• digging into the library itself to find out what went wrong
• many trial and error

Thank you and hope it is helpful to you.