(from mailing list)
I imagine they would talk to the server
over XMLRPC and could check the status of a project, trigger builds,
etc. Maybe even get back output from a failed build and pinpoint
compile/test errors in code
there should shortly be a SOAP interface also, which may be easier.
If somebody wants to work on this we'll prioritise the documentation of the XMLRPC service, and help wherever we can.