@db0 hmm right, there’s nothing readily prepared for Python yet, so you’d have to work through the bindings yourself; I believe pyo3 is the standard way to do that.
Maybe Rauthy isn’t what’s best for you though, but rather any OIDC-compliant identity provider? Authentik seems like the go-to for Python projects. You could advocate for FedCM adoption there, pointing to the ongoing work in Rauthy: https://github.com/sebadob/rauthy/discussions/145#discussioncomment-8831943