db agnostic admin for Flask?

[umchaselee at gmail.com]

I was considering building an admin that would consist of two components, a totally separate HTML/CSS/JS frontend that presumed API endpoints, and a backend written in Tornado (similar to Flask in a lot of ways) that caught all of the presumed endpoints and performed the db operations.  The idea of separating them is to make the frontend portable across backends so that a backend could be written in Tornado/Flask/Django/RoR(*shudder*)/whatever you want as long as it followed the conventions leading to the API endpoints.  I've seen a couple backends out there but haven't been too happy with any of them, and I haven't found any doing something like this.