Mob Gear

Equipment for spawning mobs is defined in datapack loot tables rather than fixed in code, so a world can set different armor, held items and head pieces per mob type and place. The mod reads these tables on the server, and it extends the vanilla loot format with a combined group that behaves differently from a plain loot group. Each group carries weight, quality and luck fields, and a group with a resulting weight of zero or less is discarded.

The combined group also handles slots. A slot can only hold one item, and once it is taken, later entries for that slot are dropped, so a table can equip a full set of iron armor without items overlapping. Local difficulty, which the game derives from the place and time, can gate certain gear, so rarer equipment appears only where difficulty is high enough. The mod supports an animal body slot for horse armor and carpets. Examples in the documentation cover dual wielding wooden axes, a thirty percent chance for a zombie to drop an equipped head, and custom equipment for mobs below y=0 or inside a Stronghold.

Mob Gear is a server-side only Fabric mod for 1.21.5 and 1.21.6, and the current file, 1.0.1, targets 1.21.6. Players join without installing it. The code is open source under the CC0 1.0 Universal license, which places it in the public domain, and public source code and an issue tracker are available.