Hi HN! This is a side project I've been working on for a while now.

It's similar to https://jsonbin.io (which was an inspiration!), but focuses on the second step of prototyping with data - once you're editing JSON online, how do you make sure you don't break your app? npoint.io lets you enforce a structure using JSON schema (http://json-schema.org).

More background info: http://alexzirbel.com/npoint

Also, it's open source! https://www.github.com/azirbel/npoint

All feedback is super welcome. Also happy to answer any questions here.