fwiw, there is an OpenAI assistant built into the Supabase dashboard now -

https://supabase.com/blog/supabase-studio-2.0#supabase-ai--a...

I just pushed a new release. It should work now!

To install the new version, just restart the app. It should then prompt you to install the update.

Thanks for reporting. I'll have a look what's missing.