User:WinX64/Slot Data

The Slot data structure defines how an item is represented when inside an inventory window of any kind, such as a chest or furnace.

This page presents the new Slot data structure, using structured components. You can find the documentation of the old structure, that utilizes raw NBT data, here.

Format

Some description does here.

Name		Type		Meaning
Item Count		VarInt		The item count. Every following field is only present if this value is greater than zero.
Item ID		Optional VarInt		The item ID. Item IDs are distinct from block IDs; see Data Generators for more information.
Number of components to add		Optional VarInt		Number of elements present in the first data component array
Number of components to remove		Optional VarInt		Number of elements present in the second data component array. This serve as a way to remove the default component values that are present on some items.
Components to add	Component type	Optional Array	Optional VarInt Enum	The type of component. See Structured components for more detail.
	Component data		Optional Varies	The component-dependent data. See Structured components for more detail.
Components to remove	Component type	Optional Array	Optional VarInt Enum	The type of component. See Structured components for more detail.

Structured components

The complete list of available components is described below. Items marked in blue cause no noticeable impact on the client, and mainly concern server-side operations.

For a more in-depth description, and information on how the items below are encoded with the NBT format, check here.

Type	Name	Description	Data
0	minecraft:custom_data	Customizable data that doesn't fit any specific component.	As follows: Name Type Description Data NBT Always a Compound Tag.
1	minecraft:max_stack_size	Maximum stack size for the item.	As follows: Name Type Description Max stack size VarInt Ranges from 1 to 99.
2	minecraft:max_damage	The maximum damage the item can take before breaking.	As follows: Name Type Description Max damage VarInt
3	minecraft:damage	The current damage of the item.	As follows: Name Type Description Damage VarInt
4	minecraft:unbreakable	Description here.	As follows: Name Type Description Show in tooltip Boolean Whether the Unbreakable indicator should be shown on the item's tooltip.
5	minecraft:custom_name	Item's custom name. Normally shown in italic, and changeable at an anvil.	As follows: Name Type Description Name Text Component
6	minecraft:item_name	Override for the item's default name. Shown when the item has no custom name.	As follows: Name Type Description Name Text Component
7	minecraft:lore	Description here.	Data here.
8	minecraft:rarity	Description here.	Data here.
9	minecraft:enchantments	Description here.	Data here.
10	minecraft:can_place_on	Description here.	Data here.
11	minecraft:can_break	Description here.	Data here.
12	minecraft:attribute_modifiers	Description here.	Data here.
13	minecraft:custom_model_data	Description here.	Data here.
14	minecraft:hide_additional_tooltip	Description here.	None.
15	minecraft:hide_tooltip	Description here.	None.
16	minecraft:repair_cost	Description here.	Data here.
17	minecraft:creative_slot_lock	Description here.	None.
18	minecraft:enchantment_glint_override	Description here.	Data here.
19	minecraft:intangible_projectile	Description here.	Data here.
20	minecraft:food	Description here.	Data here.
21	minecraft:fire_resistant	Description here.	None.
22	minecraft:tool	Description here.	Data here.
23	minecraft:stored_enchantments	Description here.	Data here.
24	minecraft:dyed_color	Description here.	Data here.
25	minecraft:map_color	Description here.	Data here.
26	minecraft:map_id	Description here.	Data here.
27	minecraft:map_decorations	Description here.	Data here.
28	minecraft:map_post_processing	Description here.	Data here.
29	minecraft:charged_projectiles	Description here.	Data here.
30	minecraft:bundle_contents	Description here.	Data here.
31	minecraft:potion_contents	Description here.	Data here.
32	minecraft:suspicious_stew_effects	Description here.	Data here.
33	minecraft:writable_book_content	Description here.	Data here.
34	minecraft:written_book_content	Description here.	Data here.
35	minecraft:trim	Description here.	Data here.
36	minecraft:debug_stick_state	Description here.	Data here.
37	minecraft:entity_data	Description here.	Data here.
38	minecraft:bucket_entity_data	Description here.	Data here.
39	minecraft:block_entity_data	Description here.	Data here.
40	minecraft:instrument	Description here.	Data here.
41	minecraft:ominous_bottle_amplifier	Description here.	Data here.
42	minecraft:recipes	Description here.	Data here.
43	minecraft:lodestone_tracker	Description here.	Data here.
44	minecraft:firework_explosion	Description here.	Data here.
45	minecraft:fireworks	Description here.	Data here.
46	minecraft:profile	Description here.	Data here.
47	minecraft:note_block_sound	Description here.	Data here.
48	minecraft:banner_patterns	Description here.	Data here.
49	minecraft:base_color	Description here.	Data here.
50	minecraft:pot_decorations	Description here.	Data here.
51	minecraft:container	Description here.	Data here.
52	minecraft:block_state	Description here.	Data here.
53	minecraft:bees	Description here.	Data here.
54	minecraft:lock	Description here.	Data here.
55	minecraft:container_loot	Description here.	Data here.

Other types

Common types used in multiple components can be described here.