Yeah, this is the next step. I first wanted to understand if this gets any traction. I think I will provide a dockerized version for the server part that you can just run with a simple command and maybe some interface to create api keys and distribute them to your users.

Fair enough from a business standpoint, but seeing as there are massive privacy/security risks involved in exposing your data to an opaque service, the open source component is probably a non-optional aspect of the value prop.