Default Item Attributes - FoundryMC/Alembic GitHub Wiki

Alembic allows you to give items default attributes that exist on all instances of the item. datapack/data/alembic/alembic/item_stats/golden_chestplate.json

{
  "id": "minecraft:golden_chestplate",
  "modifiers": [
    {
      "type": "append",
      "attribute": "alembic:arcane_damage.resistance",
      "value": 6,
      "operation": "ADDITION",
      "uuid": "f8c3de3d-1fea-4d7c-a8b0-29f63c4c3454"
    }
  ],
  "equipment_slot": "CHEST"
}

• id is the item id to apply these attributes to.
• modifiers is a list of objects which must be one of the following types:

- append: Adds the attribute to the item

• attribute, the attribute ID to apply.
• value, the amount of the attribute to give the item.
• operation, the Attribute Modifier operation to apply.
• uuid a Java UUID for the unique instance of this attribute modifier.

- replace: Replaces the attribute with the given UUID with a different value and operation

{
  "type": "replace",
  "target": "minecraft:generic.attack_damage",
  "value": 6,
  "operation": "ADDITION",
  "uuid": "CB3F55D3-645C-4F38-A497-9C13A33DB5CF"
}

• target: the attribute ID to replace
• value: the value to replace it with
• operation: the operation to change to
• uuid: the UUID of the modifier to replace

- remove: Removes all modifiers for the given attribute

{
  "type": "remove",
  "target": "minecraft:generic.attack_damage"
}

• target: the attribute ID to remove

equipment_slot is the slot in which to apply these attributes to the player when equipped in. Valid values: MAINHAND, OFFHAND, HEAD, CHEST, LEGS, FEET. Curios slot identifiers can also be used as of 1.1.0.