Is this vertexAI related or in general, I find googles oauth flow to be extremely well documented and easy to setup…

should have used ai to write the integrations...

thats with AI

as there are so many variations out there the AI gets majorly confused, as a matter of fact, the google oauth part is the one thing that gemini 2.5 pro cant code

should be its own benchmark

Maybe you should just read the docs and use the examples there. I have used all kinds of GCP services for many years and auth is not remotely complicated imo.

I got claude to write me an auth layer using only python http.client and cryptography. One shot no problem, now I can get a token from the service key any time, just have to track expiration. Annoying that they don't follow industry standard though.