The actual mediawiki work for this only really involves reading JSON and throwing bugs at us if anything breaks :)  So, should be easy, this was one of hour hopes as well, let's get to it!

By the way, to even better support this (with more performance / easier discovery), we plan on providing access to this api from the wiki-specific RESTBase URLs (eg. https://en.wikipedia.org/api/rest_v1/?doc).  That hasn't been deployed yet because we're discussing where the best place for it is there (opinions welcome).