Has a saved value
Whether anything is saved under a key against the server, a player, an entity, an item, a block or the menu.
A Minecraft element (a check) in Saved data. Needs the Basic plan or higher to go live; building and testing are free.
Example
When a player right-clicks an entity → If Has a saved value entity, owner → Answer: Already tamed.
Also called
has, is saved, exists, has data, has tag
Works as a data pack?
Yes. A vanilla data pack does this exactly as the plugin does.
What you give it
- Player
- Entity
- Block