yes, i'm the same guy who answered on the other thread.
everything the API does, it does through AE as a plug-in.
so if you have AE running (even just the renderer), your project loaded and your plug-in present, you can access all the data you described with no problem, and export it out in whatever way you want. (a plug-in is actually a DLL, so you can do anything you want, even on an OS level)
you can access the data on all elements of the project including comps, layers, footage, render queue, ect...
having said that, you can do all of this using a script instead of a plug-in.
scripts are much easier to build.
perhaps there's even a script out there that does what you're looking for, or something very close that could easily be adjusted.