[Flenser]

With some conventions how the api is structured it's possible to have loose coupling the between client and server. This video demonstrates how it is possible to make changes in structure of the API that the client detects automatically:

http://oredev.org/2010/sessions/hypermedia-apis

And he's release a Java library for creating such a client:

https://github.com/cimlabs/hypermedia-client-java