> is there an endpoint or anyway I can lookup permissions as well? "Which permissions can subject X do in resource Y?"
No. In our experience, there isn't a good use case for such an endpoint. If you're displaying permissions in UI, you generally need context on what the permissions mean, so using a CheckBulk with a predefined list is better. If you're using it to check if a user has a specific set of permissions, CheckBulk is also preferred, since you likely don't need all of them