You will likely have to compete with Supabase's diagram editor (there might be other competitors too), which has AI integrated. You can check it out and see if you can improve your system. Their product is open source as well, so you can review the code.
The simplest monetization path would be to keep it free and charge users for AI access. However, don’t hire a team, as it may not be viable against other big players in the long run.