I agree with API-spec first approach, yet I still love FastAPI. I try to get first iteration written in Markdown so we can change it easily. Once it is decided

I agree with API-spec first approach, yet I still love FastAPI. I try to get first iteration written in Markdown so we can change it easily. Once it is decided upon, FastAPI lets you build the actual implementation easily. It is priceless that the docs match the implementation by default.