Attach a tag to a player or entity, for filtering later with @e[tag=...]
A tag is an invisible label in the game, used to "mark" a player or entity so the system can tell them apart — for example, tagging boss onto a single zombie, then targeting just that one with @e[tag=boss]
/tag @e[type=zombie,limit=1] add bossexecute as @e[tag=boss] run ...A single entity can hold multiple tags at once, and a tag stays until it is removed or the entity disappears.
The examples below come out of the same generator as the form above, so the commands and explanations always match what the tool produces. Copy one and adjust it from there
A tag is an invisible label you can filter on later, e.g. @a[tag=boss] inside another command
/tag @p add bossWhat it does Will add the tag "boss" to the nearest player — you can then select this group with @e[tag=boss].
Tags stay until you delete them — they do not clear themselves at the end of a round
/tag @a remove bossWhat it does Will remove the tag "boss" from all players.
Handy while debugging, when a tag-filtered command is not matching who you expected
/tag @s listWhat it does Will list all the tags themselves (whoever runs the command) currently has.
This is the first example above, run through every edition and version this tool supports. Versions that produce the same result share a row
Every version this tool supports produces the same result, so a command you copy works without version-specific edits
/tag @p add boss