Positioned Item Stack - apace100/origins-fabric GitHub Wiki
Data type used to specify new item stacks, optionally in combination with a numerical slot ID.
Fields:
item
, string: ID of the item.
amount
, int, default = 1: Size of the item stack.
tag
, string, optional: NBT data of the item.
slot
, int, optional: A numerical slot ID, used to position the stack in inventories.