I'm currently trying to make an Add-on that utilizes a custom entity for scanning blocks around the player. I want the player to be able to use the item (aka a re-textured spawn egg), and it will summon the entity. However, I want to make the item obtainable in survival mode. So, I was wondering if there's a way to determine the spawn egg ID's of an entity from an Add-on. This would help immensely in the crafting recipe for the Add-on. Thanks in advance.