Can you be more specific about what you're trying to push? "Keychain Items" can be several things, like generic saved passwords, saved network passwords, certificates, identity preferences, and so on.
We're trying to do the same thing...we need to push individual certificates out to mac users....I went through the JAMF API doc but it wasn't clear which one(s) we would need to use. In the UI it seems like you create a config profile with that users cert and push it to that users....so I'm guessing I'll need to do something similar with that API but couldn't quite match the 2 together.
