Question how to access graphics compositor from script

I am trying to use the graphics compositor window to combine different layers of cameras and video footage. I want a behaviour script to change the composition parameters. How can I access this from a script?

 

In case anyone is wondering, I could not find a solution and used a Custom Pass Volume with fullscreen shader graph and render texture instead.

 

I have the same issue and would like how to access at least custom Composition Parameters.
CompositionProfile is available in the project but it is an internal class so it can not be accessed by a script. Edit: This is also true for the CompositionManager Script that is a hidden object in the scene. I was wondering were all of this was stored...

This feature is a good start but definietly needs some work. E.g. letting us adjust the resolution factor per layer which is easy with custom render textures. I hope that this compositor feature is still in development.