can I use the postgres source with supabase?

Hmm, I don't know enough to give you a confident answer yet. The knowledge sources provided do not mention Supabase specifically. However, Airbyte does support PostgreSQL as a source, and if your Supabase project is using PostgreSQL, it might be possible to connect it. You would need to ensure that the necessary permissions and connection parameters are correctly set up. For more information on setting up a PostgreSQL source in Airbyte, you can refer to the [official documentation](https://docs.airbyte.com/integrations/sources/postgres#quick-start).