GObject Introspection has landed in Grilo!
If you're using Grilo from git, last patches enabled improved GObject Introspection so you can start using Python with PyGObject to develop your applications.
A Python clone of the grilo-test-ui is provided, and should give you an idea of what can be done with these new bindings: basically enjoy all the power in Grilo without needing to touch C code, and without us having to maintain manually created bindings.
If you're a JavaScript user, then you need to watch bug #616961. As JavaScript doesn't support GParamSpecs yet (#626047), you'll need this patch which replaces GParamSpec annotations with uints. And now, time for unit testing with PyGObject!
Using Grilo bindings from Python console
grilo-test-ui using GObject Introspection bindings
Missing GParamSpec when accessing from JavaScript