API is confusing

I'm trying to do some API accesses with an user that have admin access. I want to be able to:

• Capture permission changes events (team_lost_access, team_gained_access, etc) to make an audit log. But API result don't show who lost or gained access, just who made the action.
• As a team account admin user, I'm not able to access events from repositories I own. Is this correct? It seems that the feed exposed is much more complete of information, but harder to parse.

What do you suggest to solve this, I don't fully rely on the documentation, which is outdated. For example, where is the documentation of /users/

/events?

So far, I'm very frustraded with the API.