[fam]

Cool! Anyone know of any open source JSON REST APIs built on Rails?

[sebastianz]

I just noticed one of the first apps listed, Gitlab has a json API implementation using the Grape gem, which looks very clean.

https://github.com/gitlabhq/gitlabhq (check out lib/api.rb and lib/api/*)

Maybe there's someone who can tell us about their experience with Grape.