The Slot data structure is how Minecraft represents an item and its associated data in the Minecraft Protocol.
|Item ID||Short|| The . A value of |
|Item Count||Optional Byte|| Not present if Item ID is |
|NBT||Optional NBT|| Not present if Item ID is |
COMPOUND '' LIST 'StoredEnchantments' COMPOUND SHORT 'id' SHORT 'lvl' END COMPOUND ... END ... END INT 'Unbreakable' ... END
See NBT for more information about the NBT format, and for the contained information and its format. Note that tool durability is included in NBT, among other things.
ff ff | empty slot 01 16 01 00 | a diamond pickaxe 01 16 01 01 04 CA FE BA BE | a diamond pickaxe with (made-up) NBT data