iClip (http://www.irradiatedsoftware.com/iclip/), which has been around for over 10 years, will finally become scriptable.
If you are interested in testing its scriptability and give feedback, I’m happy to give you a free license if you so desire.
Contact me at thomas#irradiatedsoftware.com or leave a message here if you are interested.
(Yes, I know about macdeveloper.net, which I’ve also used in the past, but it’s still too early for that - I prefer scripting-specific feedback right now.)