I'm thinking about how I can connect to fedwiki as an API. I think as long as it's using the "friends" security type, I should be able to authenticate and make the same calls the front-end does.
I wonder about the feasibility of a separate app that uses fedwiki as a data source. It would use a superset syntax to define tuples that could be parsed (by the app) as RDF. However, you could still browse the wiki like normal, and all the text and links would make sense.