Bedrock Edition level format/Item format

Item Stack[]

All items share this base:

• : The item's root tag.
  •  Block: (May not exist) What block is placed when placing a block item.
    • Tags common to block
  •  CanDestroy: (May not exist) Controls what block types this item can destroy.
    • : A block ID.
  •  CanPlaceOn: (May not exist) Controls what block types this block may be placed on.
    • : A block ID.
  •  Count: Number of items stacked in this inventory slot.
  •  Damage: The metadata value. Note that this tag does not store items' damage value.
  •  Name: The item ID.
  •  tag: (May not exist) Additional information about the item.
  •  WasPickedUp: Unknown.

General Tags[]

Items with durability store their damage value in NBT. Additionally, items can have custom display names and lore. There is also the RepairCost tag which tracks anvil usage for items, making them more costly with every use of the anvil.

•  tag: Parent tag.
  •  Damage: (May not exist) The damage value for this item. Defaults to 0.
  •  display: (May not exist) Display properties.
    •  Lore: (May not exist) List of strings to display as lore for the item.
      • : (May not exist) A line of text for the lore of an item.
    •  Name: (May not exist) The JSON text component to use to display the item name.
  •  minecraft:item_lock: 1 for "lock in slot". 2 for "lock in inventory".
  •  minecraft:keep_on_death: 1 if keeping on death.^{[needs testing]}
  •  RepairCost: (May not exist) Number of experience levels to add to the base level cost when repairing, combining, or renaming this item with an Anvil.
  •  Unbreakable: 1 or 0 (true/false) - (may not exist) if this item's durability is allowed to take damage.

Enchantment Tags[]

in Bedrock Edition, there's only one way to store enchantment NBTs: both enchanted items and Enchanted Book share the  ench tag.

•  tag: Parent tag.
  •  ench: Contains enchantments on this item.
    • : A single enchantment.
      •  id: The ID of the enchantment.
      •  lvl: The level of the enchantment, where 1 is level 1. Values are clamped between 0 and 255 when reading.

Armor Trim[]

Additional fields when an armor is trimmed:

•  tag: Parent tag.
  •  Trim: Properties of the armor trim.
    •  Material: The material which decides the color of armor trim.
    •  Pattern: The pattern of armor trim.

Book and Quills[]

Additional fields for book and quills:

•  tag: Parent tag.
  •  pages: (May not exist) The list of pages in the book.
    • : A single page in the book.
      •  photoname: Filename of a photo in this page if included.
      •  text: The text in this page.

Bucket of Aquatic Mob[]

Additional fields for bucket:

•  tag: Parent tag.
  • Tags common to entity
  • Additional tags unique to fish or axolotl entity.
  •  AppendCustomName: 1 or 0 (true/false) - true if the entity color, state, and id are used to generate the bucket item's name.
  •  BodyID: (May not exist) The translation key of entity's state. Used to generate the bucket item's name.
  •  ColorID: (May not exist) The translation key of a color. Used to generate the bucket item's name.
  •  Color2ID: (May not exist) The translation key of another color. Used to generate the bucket item's name.
  •  CustomName: (May not exist) The custom name of entity in it. Used to generate the bucket item's name.
  •  GroupName: (May not exist) Unknown. Used to generate the bucket item's name.

Crossbow[]

Additional fields for crossbow:

•  tag: Parent tag.
  •  chargedItem: The items this crossbow has charged.
    • Tags common to item stack

Filled Map[]

Additional fields for filled map:

•  tag: Parent tag.
  •  map_display_players: 1 or 0 (true/false) - (may not exist) true if the map displays player markers.
  •  map_is_init: (May not exist) Unknown.
  •  map_is_scaling: (May not exist) Unknown.
  •  map_name_index: The index of the map's name.
  •  map_scale: (May not exist) Unknown.
  •  map_uuid: The UUID of the map used in this item.

Firework Rocket[]

Additional fields for firework rocket:

•  tag: Parent tag.
  •  Fireworks
    •  Explosions: List of compounds representing each explosion this firework causes.
      • : A explosion effect.
        • Tags common to firework explosion
    •  Flight: Indicates the flight duration of the firework (equals the amount of gunpowder used in crafting the rocket). Can be anything from -128 to 127.

Firework Star[]

Additional fields for firework star:

•  tag: Parent tag.
  •  customColor: The color of this firework star.
  •  FireworksItem: The explosion effect contributed by this firework star.
    • Tags common to firework explosion

Glow Stick[]

Additional fields for glow stick:

• : Parent tag.
  •  active_time: (May not exist) Unknown.

Horse Armor[]

Additional fields for horse armor:

•  tag: Parent tag.
  •  customColor: (May not exist) The color of the leather armor.

Lodestone Compass[]

Additional fields for lodestone compass:

•  tag: Parent tag.
  •  trackingHandle: The ID of lodestone to track.

Potion[]

Additional fields for potion:

•  tag: Parent tag.
  •  wasJustBrewed: 1 or 0 (true/false) - (may not exist) true if item is brewed in brewing stand.

Shield[]

Additional fields for shield:

•  tag: Parent tag.
  •  Base: The base color of the banner on the shield. See Banner#Block_data.
  •  Patterns: (May not exist) List of all patterns applied to the banner on the shield.
    • : An individual pattern.
      •  Color: The base color of the pattern. See Banner#Block_data.
      •  Pattern: The pattern ID code. See Banner#Block_data.

Written Book[]

Additional fields for written book:

•  tag: Parent tag.
  •  author: The author of this book.
  •  generation: The copy tier of the book. 0 = Original, 1 = Copy of original, 2 = Copy of copy.
  •  pages: The list of pages in the book.
    • : A single page in the book.
      •  photoname: Filename of a photo in this page if included.
      •  text: The text in this page.
  •  title: The title of this book.
  •  xuid: Unknown.