As mentioned below I have been building the 'read' side of this: a data publication platform. I wanted to avoid any server side components. The communication / write part and updating the server-side sqlite database would need running components on the server which I wanted to avoid.
The 'write' part would technically be very doable and not that different from other back-ends.
The 'write' part would technically be very doable and not that different from other back-ends.
https://github.com/GhentCDH/Pihka