It doesn't exist yet.
Other toolkits I'd kill for
Easily being able to query your database, webservices, or more via an instant message. To me, it's bring back the command line to the real time web.
In other news, I've spotted what looks to be a highly interesting thing to play with in python, Nodel.
If I can get past today's workload, I feel some tinkering coming along :)