Could you please add the node "echopet.pet.menu" to the PlayerInteractEvent as well?
It currently only blocks the "/pet menu" command if you negate it but you still can access the menu by rightclicking your pet. I want to be able to completly disable that.

Currently working on a better inventory menu system which will make this easier to support.

Sorry for the very very late reply :(

The commit above implements your first suggestion 😄

Even better would be:
Make the menu contents dependent on the permissions a player has.
Example: I negate "echopet.pet.ride.sheep" and the riding entry for sheeps no longer shows up in the menu.

I'm fine with both solutions but it would be nice to get at least the first one :) That's currently the only thing that prevents me from using the plugin.