It's hard to say Creo has a scripting capability despite the large number of programming interfaces.
There's Mapkeys that are simple regurgitation; same with trail files.
Program is more like a family table without the grid - gross relations and feature/component inclusion/exclusion
For free, there's Web-link and J-Link, but those are software development tools that have high learning curves. Also free is the VB API, which shares the high learning curve.
None of these offers full content creation, but one can build work-arounds.
At the top of the heap is Toolkit, separately licensed.
There doesn't seem to be a middle place where scripting is usually found.
Do a Google search for "what-were-ptc-thinking-when-it-came-to-apis-for-proengineer-creo-elements" It's a good article, at least in matching my experience.