You have interfaces to a lot of languages. As Ruby, and especially Rails, are growing: could you offer an interface to that?

There are several third party Rails plugins that already exist for this purpose, such as Princely.

You could also use http://docraptor.com. There is a gem (https://github.com/expectedbehavior/doc_raptor_gem)!

Note: I am one of the owners of DocRaptor.

Update: add link to gem