GH python instantiate grasshopper components

I’m working on a little UI to do some math and some modeling using grasshopper python. Putting UI components (valuelist, slider, panel) on the canvas using python has been easy, they live in gh.Kernel.Special. I’d like to include some basic other grasshopper components like add and multiply, but they don’t seem to be anywhere in the API. Is there any way to instantiate them with a python script? How about instantiating another python script?

I can do all the math in python if I have to but the whole thing would be easier and more readable if I could just plop down a multiplier.

Well, I still can’t find it in the API but at least I have a workaround - manually place an object, locate it via NickName, and make a new one using copy().