Can you provide some more information behind what you are trying to accomplish? I would love to assist and I am sure the rest of community would as well if we had a better understanding of the ask. Is this for a custom admin view on Tableau Server that you are looking to create?
Yes for custom admin view, If I want to see permission set on a project we need to go the project and check it. We want to build a workbook which will show permissions set for publishers/interactors on various projects.
Sorry for the delay in my reply.
I would check out the following threads to gain some possibilities for the desired view: PostgreSQL User Tracking - Workbook and Extract for Each Site
Hope this helps!