Access EPG via JSON-RPC

I'm looking for a way to "browse" the EPG, preferably through JSON-RPC. But i couldn't find anything - only some very basic channel-handling stuff in interfaces/json-rpc/PVROperations.

Is it somewhere on the feature-request- or to-do-list?

If I write it myself, should the Functions go to PVROperations or a separate RPC-namespace?

Tobias