One way would be to make a device that exposes the clip properties you are interested in modulating, and then use the LFO device to modulate them.
Transpose, detune, and clip gain are all properties listed in the Live Object Model (LOM), which is in the Max help system. The LOM is like the master list of everything in Live that Max can get its hands on.
If you don't know already, you'll need to learn how to use the LOM and how to navigate through Live's hierarchy in order to expose those parameters.
Arokhsar is correct. These properties can all be exposed by navigating through the API using the LOM (I love acronyms). I'm at work right now, otherwise i'd throw you a patch that I'd made just for this purpose. But it would behoove you to familiarize yourself with the process, if you want to do work like this in the future.