Key	Name
Type	vec3f
Type	vec4f
Type	vec3f64
Type	SlotComponentType
Type	SlotComponent
Type	Slot
Type	FireworkExplosion
Type	BookPage
Type	EffectDetail
Type	BlockSet
Type	BlockProperty
Type	BlockPredicate
Type	Particle
Type	ingredient
Type	soundSource
Type	packedChunkPos
Type	previousMessages
Type	entityMetadataEntry
Type	minecraft_simple_recipe_format
Type	minecraft_smelting_format
Type	tags
Type	chunkBlockEntity
Type	chat_session?
Type	game_profile
Type	command_node
Type	packet_common_cookie_request
Type	packet_common_store_cookie
Type	packet_common_transfer
Type	packet_common_cookie_response
Type	packet_common_select_known_packs

Datatype

Field Name	Field Type	Notes
x	f32
y	f32
z	f32

Type

vec4f

Datatype

Field Name	Field Type	Notes
x	f32
y	f32
z	f32
w	f32

Type

vec3f64

Datatype

Field Name	Field Type	Notes
x	f64
y	f64
z	f64

Type

SlotComponentType

Datatype

Field Name Field Type Notes

SlotComponentType

varint enum

0	custom data
1	max stack size
2	max damage
3	damage
4	unbreakable
5	custom name
6	item name
7	lore
8	rarity
9	enchantments
10	can place on
11	can break
12	attribute modifiers
13	custom model data
14	hide additional tooltip
15	hide tooltip
16	repair cost
17	creative slot lock
18	enchantment glint override
19	intangible projectile
20	food
21	fire resistant
22	tool
23	stored enchantments
24	dyed color
25	map color
26	map id
27	map decorations
28	map post processing
29	charged projectiles
30	bundle contents
31	potion contents
32	suspicious stew effects
33	writable book content
34	written book content
35	trim
36	debug stick state
37	entity data
38	bucket entity data
39	block entity data
40	instrument
41	ominous bottle amplifier
42	recipes
43	lodestone tracker
44	firework explosion
45	fireworks
46	profile
47	note block sound
48	banner patterns
49	base color
50	pot decorations
51	container
52	block state
53	bees
54	lock
55	container loot

Type

SlotComponent

Datatype

Field Name Field Type Notes

type SlotComponentType

data

if type

is custom data

anonymousNbt

TODO: look into how nbt works here

is max stack size varint

is max damage varint

is damage varint

is unbreakable bool

is custom name anonymousNbt

is item name anonymousNbt

is lore length varint

is lore

array

anonOptionalNbt

is rarity

varint enum

0	common
1	uncommon
2	rare
3	epic

is enchantments

enchantments length varint

enchantments

array

id	varint
level	varint

showTooltip bool

is can place on or can break

predicates length	varint
predicates array	BlockPredicate
showTooltip	bool

is attribute modifiers

attributes length varint

attributes

array

typeId varint

uniqueId UUID

name string

value f64

operation

varint enum

0	add
1	multiply base
2	multiply total

slot

varint enum

0	any
1	main hand
2	off hand
3	hand
4	feet
5	legs
6	chest
7	head
8	armor
9	body

showTooltip bool

is custom model data varint

is hide additional tooltip void

is hide tooltip void

is repair cost varint

is creative slot lock void

is enchantment glint override bool

is intangible projectile void

is food

nutrition

varint

Name Type Description Nutrition VarInt Non-negative Saturation Modifier Float How much saturation will be given after consuming the item. Can Always Eat Boolean Whether the item can always be eaten, even at full hunger. Seconds To Eat Float How long it takes to consume the item. Using converts to Slot Data This specifies the item produced after consuming the current item. In the Notchian server, this is used for stews, which turn into bowls. Set this to Air if the item should be consumed normally without leaving any other item after. Number of effects VarInt Number of elements in the following array. Effect Type ID Array Potion Effect The potion effect. See Potion Effect. Probability Float The probability for this effect to be chosen.

saturationModifier f32

canAlwaysEat bool

secondsToEat f32

usingConvertsTo Slot

effects length varint

effects

array

effect	varint
probability	f32

is fire resistant void

is tool

rules length

varint

Name Type Description Number of Rules VarInt The number of elements in the following array. Rule Blocks Array Block Set The block this rule applies to. See Block Set. Has Speed Boolean
Speed Optional Float The speed at which the tool breaks this rules' blocks. Only present if Has Speed is true. Has Correct Drop For Blocks Boolean
Correct Drop For Blocks Optional Boolean Whether items should drop only if this is the correct tool. Only present if Has Correct Drop For Blocks is true. Default Mining Speed Float The mining speed in case none of the previous rule were matched. Damage Per Block VarInt The amount of damage the item takes per block break.

rules

array

blocks length	varint
blocks array	BlockSet
hasSpeed	bool
speed	f32
hasCorrectDropForBlocks	bool
correctDropForBlocks	bool

defaultMiningSpeed f32

damagePerBlock varint

is stored enchantments

enchantments length

varint

Name Type Description Number of enchantments VarInt Number of elements in the following array. Enchantment Type ID Array VarInt Enum The ID of the enchantment in the enchantment registry. Level VarInt The level of the enchantment. Show In Tooltip Boolean Whether the list of enchantments should be shown on the item's tooltip.

enchantments

array

id	varint
level	varint

showInTooltip bool

is dyed color

color	varint
showTooltip	bool

is map color varint

is map id varint

is map decorations anonOptionalNbt

is map post processing varint

is charged projectiles

projectiles length	varint
projectiles array	Slot

is bundle contents

contents length	varint
contents array	Slot

is potion contents

hasPotionId

bool

Name Type Description Has Potion ID Boolean Whether this potion has an ID in the potion registry. If true, it has the default effects associated with the potion type. Potion ID Optional VarInt The ID of the potion type in the potion registry. Only present if Has Potion ID is true. Has Custom Color Boolean Whether this potion has a custom color. If false, it uses the default color associated with the potion type. Custom Color Optional Int The RGB components of the color, encoded as an integer. Only present if Has Custom Color is true. Number Of Custom Effects VarInt The number of elements in the following array. Custom Effects Array of Potion Effect Any custom effects the potion might have. See Potion Effect.

potionId optvarint

hasCustomColor bool

customColor optvarint

customEffects length varint

customEffects

array

effect	varint
details	EffectDetail

is suspicious stew effects

effects length

varint

Name Type Description Number Of Effects VarInt Number of elements in the following array. Effect Type ID Array VarInt Enum The ID of the effect in the potion effect type registry. Duration VarInt The duration of the effect.

effects

array

effect	varint
duration	varint

is writable book content

pages length	varint	Name Type Description Number Of Pages VarInt Number of elements in the following array. Page Raw Content Array (100) String (1024) The raw text of the page. Has Filtered Content Boolean Filtered Content Optional String (1024) The content after passing through chat filters. Only present if Has Filtered Content is true.
pages array	BookPage

is written book content

rawTitle	string	Name Type Description Raw Title String (32) The raw title of the book. Has Filtered Title Boolean Filtered Title Optional String (32) The title after going through chat filters. Only present if Has Filtered Title is true. Author String Generation VarInt Number Of Pages VarInt Number of elements in the following array. Page Raw Content Array (100) TextComponent (1024) The raw text of the page. Has Filtered Content Boolean Filtered Content Optional Text Component (1024) The content after passing through chat filters. Only present if Has Filtered Content is true. Resolved Boolean Whether entity selectors have already been resolved.
filteredTitle optional	string
author	string
generation	varint
pages length	varint
pages array	BookPage
resolved	bool	Whether entity selectors have already been resolved.

is trim

materialType

varint

Name Type Description Trim Material Type VarInt Identifier used to determine the data that follows. It can be either: 0 - Directly represents a trim material, with the necessary data following. Anything else - References a trim material in its registry, by the ID of Trim Material Type - 1. Asset Name Optional String See Armor Trim Material Registry. Only present if Trim Material Type is 0. Ingredient Optional VarInt See Armor Trim Material Registry. Only present if Trim Material Type is 0. Item Model Index Optional Float See Armor Trim Material Registry. Only present if Trim Material Type is 0. Number of Overrides Optional VarInt See Armor Trim Material Registry. Only present if Trim Material Type is 0. Override Armor Material Type Optional Array VarInt Enum See Armor Trim Material Registry. Only present if Trim Material Type is 0. Overriden Asset Name String See Armor Trim Material Registry. Only present if Trim Material Type is 0. Description Optional Text Component See Armor Trim Material Registry. Only present if Trim Material Type is 0. Trim Pattern Type VarInt Identifier used to determine the data that follows. It can be either: 0 - Directly represents a trim pattern, with the necessary data following. Anything else - References a trim pattern in its registry, by the ID of Trim Pattern Type - 1. Asset Name Optional String See Armor Trim Pattern Registry. Only present if Trim Pattern Type is 0. Template Item Optional VarInt See Armor Trim Pattern Registry. Only present if Trim Pattern Type is 0. Description Optional Text Component See Armor Trim Pattern Registry. Only present if Trim Pattern Type is 0. Decal Optional Boolean See Armor Trim Pattern Registry. Only present if Trim Pattern Type is 0. Show In Tooltip Boolean Whether the trim information should be shown on the item's tooltip. Identifier used to determine the data that follows. It can be either: 0 - Directly represents a trim material, with the necessary data following. Anything else - References a trim material in its registry, by the ID of Trim Material Type - 1.

🔁

if materialType

is 0

assetName string

ingredientId varint

itemModelIndex f32

numberOfOverrides optvarint

override length varint

override

array

armorMaterialType	varint
overridenAssetName	string

description string

trimPatternType varint

🔁

if trimPatternType

is 0

assetName	string
templateItem	varint
description	string
decal	bool

showInTooltip bool

is debug stick state anonymousNbt

is entity data anonymousNbt

is bucket entity data anonymousNbt

is block entity data anonymousNbt

is instrument

instrumentType

varint

Name Type Description Instrument Type VarInt Identifier used to determine the data that follows. It can be either: 0 - Directly represents an instrument, with the necessary data following. Anything else - References an instrument in its registry, by the ID of Instrument Type - 1. Sound Event Optional Sound Event The sound to be played. Only present if Instrument Type is 0. Use duration Optional Float The maximum range of the sound. Only present if Instrument Type is 0. Range Optional Float The range of the instrument. Only present if Instrument Type is 0.

🔁

if instrumentType

is 0

soundEvent	string
useDuration	f32
range	f32

is ominous bottle amplifier varint

is recipes anonymousNbt

is lodestone tracker

globalPosition

optional

dimension	string	Name Type Description Has Global Position Boolean Whether this lodestone points to a position, otherwise it spins randomly. Dimension Identifier The dimension the compass points to. Only present if Has Global Position is true. Position Position The position the compass points to. Only present if Has Global Position is true. Tracked Boolean Whether the component is removed when the associated lodestone is broken.
position	vec3f

tracked bool

is firework explosion

FireworkExplosion

Name Type Description Shape VarInt Enum Can be one of the following: 0 - Small ball 1 - Large ball 2 - Star 3 - Creeper 4 - Burst Number Of Colors VarInt The number of elements in the following array. Colors Array of Int The RGB components of the color, encoded as an integer. Number Of Fade Colors VarInt The number of elements in the following array. Fade Colors Array of Int The RGB components of the color, encoded as an integer. Has Trail Boolean
Has Twinkle Boolean

is fireworks

flightDuration	varint
explosions length	varint
explosions array	FireworkExplosion

is profile

hasName

bool

Name Type Description Has Name Boolean
Name Optional String (16) Only present if Has Name is true. Has Unique ID Boolean
Unique ID Optional UUID Only present if Has Unique ID is true. Number of Properties VarInt Number of elements in the following array. Property Name Array String (64)
Value String
Has Signature Boolean
Signature String (1024) Only present if Has Signature is true.

name string

hasUniqueId bool

uniqueId UUID

properties length varint

properties

array

property	string
value	string
hasSignature	bool
signature	string

is note block sound string

is banner patterns

layers length

varint

Name Type Description Number of Layers VarInt Number of elements in the following array. Layer Pattern Type Array VarInt Identifier used to determine the data that follows. It can be either: 0 - Directly represents a pattern, with the necessary data following. Anything else - References a pattern in its registry, by the ID of Pattern Type - 1. Asset ID Optional Identifier Identifier of the asset. Only present if Pattern Type is 0. Translation Key Optional String Only present if Pattern Type is 0. Color Dye Color See Dye Color.

layers

array

patternType varint

🔁

if patternType

is 0

assetId	string
translationKey	string

color varint

is base color varint

is pot decorations

decorations length	varint	The ID of the items in the item registry.
decorations array	varint	The ID of the items in the item registry.

is container

contents length	varint
contents array	Slot

is block state

properties length

varint

Name Type Description Number of Properties VarInt Number of elements in the following array. Property Name Array String
Value String

properties

array

property	string
value	string

is bees

bees length

varint

Name Type Description Number of Bees VarInt Number of elements in the following array. Bee Entity Data Array NBT
Ticks In Hive VarInt
Min Ticks In Hive VarInt

bees

array

nbtData	anonymousNbt	Custom data for the entity, always a Compound Tag. Same structure as the minecraft:custom_data component.
ticksInHive	varint
minTicksInHive	varint

is lock anonymousNbt

is container loot anonymousNbt

Type

Slot

Datatype

Field Name Field Type Notes

itemCount i8

🔁

if itemCount

is 0 void

default

itemId varint

addedComponentCount

varint

https://wiki.vg/SlotData#Structuredcomponents

public static final DataComponentType CUSTOM_DATA = new DataComponentType<>(ItemCodecHelper::readAnyTag, ItemCodecHelper::writeAnyTag, ObjectDataComponent::new);
public static final IntComponentType MAXSTACKSIZE = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final IntComponentType MAX_DAMAGE = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final IntComponentType DAMAGE = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final BooleanComponentType UNBREAKABLE = new BooleanComponentType(ByteBuf::readBoolean, ByteBuf::writeBoolean, BooleanDataComponent::new);
public static final DataComponentType CUSTOM_NAME = new DataComponentType<>(ItemCodecHelper::readComponent, ItemCodecHelper::writeComponent, ObjectDataComponent::new);
public static final DataComponentType ITEM_NAME = new DataComponentType<>(ItemCodecHelper::readComponent, ItemCodecHelper::writeComponent, ObjectDataComponent::new);
public static final DataComponentType> LORE = new DataComponentType<>(listReader(ItemCodecHelper::readComponent), listWriter(ItemCodecHelper::writeComponent), ObjectDataComponent::new);
public static final IntComponentType RARITY = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final DataComponentType ENCHANTMENTS = new DataComponentType<>(ItemCodecHelper::readItemEnchantments, ItemCodecHelper::writeItemEnchantments, ObjectDataComponent::new);
public static final DataComponentType CANPLACEON = new DataComponentType<>(ItemCodecHelper::readAdventureModePredicate, ItemCodecHelper::writeAdventureModePredicate, ObjectDataComponent::new);
public static final DataComponentType CAN_BREAK = new DataComponentType<>(ItemCodecHelper::readAdventureModePredicate, ItemCodecHelper::writeAdventureModePredicate, ObjectDataComponent::new);
public static final DataComponentType ATTRIBUTE_MODIFIERS = new DataComponentType<>(ItemCodecHelper::readItemAttributeModifiers, ItemCodecHelper::writeItemAttributeModifiers, ObjectDataComponent::new);
public static final IntComponentType CUSTOMMODELDATA = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final DataComponentType HIDEADDITIONALTOOLTIP = new DataComponentType<>(unitReader(), unitWriter(), ObjectDataComponent::new);
public static final DataComponentType HIDE_TOOLTIP = new DataComponentType<>(unitReader(), unitWriter(), ObjectDataComponent::new);
public static final IntComponentType REPAIR_COST = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final DataComponentType CREATIVESLOTLOCK = new DataComponentType<>(unitReader(), unitWriter(), ObjectDataComponent::new);
public static final BooleanComponentType ENCHANTMENTGLINTOVERRIDE = new BooleanComponentType(ByteBuf::readBoolean, ByteBuf::writeBoolean, BooleanDataComponent::new);
public static final DataComponentType INTANGIBLE_PROJECTILE = new DataComponentType<>(ItemCodecHelper::readAnyTag, ItemCodecHelper::writeAnyTag, ObjectDataComponent::new);
public static final DataComponentType FOOD = new DataComponentType<>(ItemCodecHelper::readFoodProperties, ItemCodecHelper::writeFoodProperties, ObjectDataComponent::new);
public static final DataComponentType FIRE_RESISTANT = new DataComponentType<>(unitReader(), unitWriter(), ObjectDataComponent::new);
public static final DataComponentType TOOL = new DataComponentType<>(ItemCodecHelper::readToolData, ItemCodecHelper::writeToolData, ObjectDataComponent::new);
public static final DataComponentType STORED_ENCHANTMENTS = new DataComponentType<>(ItemCodecHelper::readItemEnchantments, ItemCodecHelper::writeItemEnchantments, ObjectDataComponent::new);
public static final DataComponentType DYED_COLOR = new DataComponentType<>(ItemCodecHelper::readDyedItemColor, ItemCodecHelper::writeDyedItemColor, ObjectDataComponent::new);
public static final IntComponentType MAP_COLOR = new IntComponentType((helper, input) -> input.readInt(), (helper, output, value) -> output.writeInt(value), IntDataComponent::new);
public static final IntComponentType MAP_ID = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final DataComponentType MAP_DECORATIONS = new DataComponentType<>(ItemCodecHelper::readAnyTag, ItemCodecHelper::writeAnyTag, ObjectDataComponent::new);
public static final IntComponentType MAPPOSTPROCESSING = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final DataComponentType> CHARGED_PROJECTILES = new DataComponentType<>(listReader(ItemCodecHelper::readItemStack), listWriter(ItemCodecHelper::writeItemStack), ObjectDataComponent::new);
public static final DataComponentType> BUNDLE_CONTENTS = new DataComponentType<>(listReader(ItemCodecHelper::readItemStack), listWriter(ItemCodecHelper::writeItemStack), ObjectDataComponent::new);
public static final DataComponentType POTION_CONTENTS = new DataComponentType<>(ItemCodecHelper::readPotionContents, ItemCodecHelper::writePotionContents, ObjectDataComponent::new);
public static final DataComponentType> SUSPICIOUSSTEWEFFECTS = new DataComponentType<>(listReader(ItemCodecHelper::readStewEffect), listWriter(ItemCodecHelper::writeStewEffect), ObjectDataComponent::new);
public static final DataComponentType WRITABLEBOOKCONTENT = new DataComponentType<>(ItemCodecHelper::readWritableBookContent, ItemCodecHelper::writeWritableBookContent, ObjectDataComponent::new);
public static final DataComponentType WRITTENBOOKCONTENT = new DataComponentType<>(ItemCodecHelper::readWrittenBookContent, ItemCodecHelper::writeWrittenBookContent, ObjectDataComponent::new);
public static final DataComponentType TRIM = new DataComponentType<>(ItemCodecHelper::readArmorTrim, ItemCodecHelper::writeArmorTrim, ObjectDataComponent::new);
public static final DataComponentType DEBUGSTICKSTATE = new DataComponentType<>(ItemCodecHelper::readAnyTag, ItemCodecHelper::writeAnyTag, ObjectDataComponent::new);
public static final DataComponentType ENTITY_DATA = new DataComponentType<>(ItemCodecHelper::readAnyTag, ItemCodecHelper::writeAnyTag, ObjectDataComponent::new);
public static final DataComponentType BUCKETENTITYDATA = new DataComponentType<>(ItemCodecHelper::readAnyTag, ItemCodecHelper::writeAnyTag, ObjectDataComponent::new);
public static final DataComponentType BLOCKENTITYDATA = new DataComponentType<>(ItemCodecHelper::readAnyTag, ItemCodecHelper::writeAnyTag, ObjectDataComponent::new);
public static final DataComponentType> INSTRUMENT = new DataComponentType<>(ItemCodecHelper::readInstrument, ItemCodecHelper::writeInstrument, ObjectDataComponent::new);
public static final IntComponentType OMINOUSBOTTLEAMPLIFIER = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final DataComponentType RECIPES = new DataComponentType<>(ItemCodecHelper::readRecipes, ItemCodecHelper::writeRecipes, ObjectDataComponent::new);
public static final DataComponentType LODESTONE_TRACKER = new DataComponentType<>(ItemCodecHelper::readLodestoneTarget, ItemCodecHelper::writeLodestoneTarget, ObjectDataComponent::new);
public static final DataComponentType FIREWORK_EXPLOSION = new DataComponentType<>(ItemCodecHelper::readFireworkExplosion, ItemCodecHelper::writeFireworkExplosion, ObjectDataComponent::new);
public static final DataComponentType FIREWORKS = new DataComponentType<>(ItemCodecHelper::readFireworks, ItemCodecHelper::writeFireworks, ObjectDataComponent::new);
public static final DataComponentType PROFILE = new DataComponentType<>(ItemCodecHelper::readResolvableProfile, ItemCodecHelper::writeResolvableProfile, ObjectDataComponent::new);
public static final DataComponentType NOTEBLOCKSOUND = new DataComponentType<>(ItemCodecHelper::readResourceLocation, ItemCodecHelper::writeResourceLocation, ObjectDataComponent::new);
public static final DataComponentType> BANNER_PATTERNS = new DataComponentType<>(listReader(ItemCodecHelper::readBannerPatternLayer), listWriter(ItemCodecHelper::writeBannerPatternLayer), ObjectDataComponent::new);
public static final IntComponentType BASE_COLOR = new IntComponentType(ItemCodecHelper::readVarInt, ItemCodecHelper::writeVarInt, IntDataComponent::new);
public static final DataComponentType> POT_DECORATIONS = new DataComponentType<>(listReader(ItemCodecHelper::readVarInt), listWriter(ItemCodecHelper::writeVarInt), ObjectDataComponent::new);
public static final DataComponentType> CONTAINER = new DataComponentType<>(listReader(ItemCodecHelper::readOptionalItemStack), listWriter(MinecraftCodecHelper::writeOptionalItemStack), ObjectDataComponent::new);
public static final DataComponentType BLOCK_STATE = new DataComponentType<>(ItemCodecHelper::readBlockStateProperties, ItemCodecHelper::writeBlockStateProperties, ObjectDataComponent::new);
public static final DataComponentType> BEES = new DataComponentType<>(listReader(ItemCodecHelper::readBeehiveOccupant), listWriter(ItemCodecHelper::writeBeehiveOccupant), ObjectDataComponent::new);
public static final DataComponentType LOCK = new DataComponentType<>(ItemCodecHelper::readLock, ItemCodecHelper::writeLock, ObjectDataComponent::new);
public static final DataComponentType CONTAINER_LOOT = new DataComponentType<>(ItemCodecHelper::readAnyTag, ItemCodecHelper::writeAnyTag, ObjectDataComponent::new);

removedComponentCount varint

Length for components below is addedComponentCount from above

components

array

SlotComponent

Length for removeComponents below is removedComponentCount from above

removeComponents

array

type SlotComponentType

Type

FireworkExplosion

Datatype

Field Name Field Type Notes

shape

varint enum

0	small ball
1	large ball
2	star
3	creeper
4	burst

colors length varint

colors

array

i32

fadeColors length varint

fadeColors

array

i32

hasTrail bool

hasTwinkle bool

Type

BookPage

Datatype

Field Name	Field Type	Notes
content	string
filteredContent optional	string

Type

EffectDetail

Datatype

Field Name	Field Type	Notes
amplifier	varint
duration	varint
ambient	bool
showParticles	bool
showIcon	bool
hiddenEffect optional	EffectDetail

Type

BlockSet

Datatype

Field Name Field Type Notes

type varint

name

if type

is 0	string
default	void

blockIds

if type

is 0

void

TODO: This will require a custom type ; we need type - 1 length of blockIds

Type

BlockProperty

Datatype

Field Name	Field Type	Notes
name	string	Name of the block state property.
isExactMatch	bool	Whether this is an exact value match, as opposed to ranged.
exactValue optional	string	Value of the block state property. Only present in exact match mode.
minValue optional	string	Minimum value of the block state property range. Only present in ranged match mode.
maxValue optional	string	Maximum value of the block state property range. Only present in ranged match mode.

Type

BlockPredicate

Datatype

Field Name	Field Type	Notes
blockSet length	varint
blockSet array	BlockSet
properties length	varint
properties array	BlockProperty
nbt	anonOptionalNbt

Type

Particle

Datatype

Field Name Field Type Notes

type

varint enum

0	angry villager	See client/net/minecraft/core/particles/ParticleTypes.java
1	block
2	block marker
3	bubble
4	cloud
5	crit
6	damage indicator
7	dragon breath
8	dripping lava
9	falling lava
10	landing lava
11	dripping water
12	falling water
13	dust
14	dust color transition
15	effect
16	elder guardian
17	enchanted hit
18	enchant
19	end rod
20	entity effect
21	explosion emitter
22	explosion
23	gust
24	small gust
25	gust emitter large
26	gust emitter small
27	sonic boom
28	falling dust
29	firework
30	fishing
31	flame
32	infested
33	cherry leaves
34	sculk soul
35	sculk charge
36	sculk charge pop
37	soul fire flame
38	soul
39	flash
40	happy villager
41	composter
42	heart
43	instant effect
44	item
45	vibration
46	item slime
47	item cobweb
48	item snowball
49	large smoke
50	lava
51	mycelium
52	note
53	poof
54	portal
55	rain
56	smoke
57	white smoke
58	sneeze
59	spit
60	squid ink
61	sweep attack
62	totem of undying
63	underwater
64	splash
65	witch
66	bubble pop
67	current down
68	bubble column up
69	nautilus
70	dolphin
71	campfire cosy smoke
72	campfire signal smoke
73	dripping honey
74	falling honey
75	landing honey
76	falling nectar
77	falling spore blossom
78	ash
79	crimson spore
80	warped spore
81	spore blossom air
82	dripping obsidian tear
83	falling obsidian tear
84	landing obsidian tear
85	reverse portal
86	white ash
87	small flame
88	snowflake
89	dripping dripstone lava
90	falling dripstone lava
91	dripping dripstone water
92	falling dripstone water
93	glow squid ink
94	glow
95	wax on
96	wax off
97	electric spark
98	scrape
99	shriek
100	egg crack
101	dust plume
102	trial spawner detected player
103	trial spawner detected player ominous
104	vault connection
105	dust pillar
106	ominous spawning
107	raid omen
108	trial omen

data

if type

is block or block marker or falling dust or dust pillar varint

is dust

red	f32
green	f32
blue	f32
scale	f32

is dust color transition

fromRed	f32
fromGreen	f32
fromBlue	f32
scale	f32
toRed	f32
toGreen	f32
toBlue	f32

is entity effect i32

is item Slot

is sculk charge f32

is shriek varint

is vibration

position	string
entityId	varint

Type

soundSource

Datatype

Field Name Field Type Notes

soundSource

varint enum

0	master
1	music
2	record
3	weather
4	block
5	hostile
6	neutral
7	player
8	ambient
9	voice

Type

packedChunkPos

Datatype

Field Name	Field Type	Notes
z	i32
x	i32

Type

previousMessages

Datatype

Field Name Field Type Notes

previousMessages length varint

previousMessages

array

id varint

signature

if id

default void

Type

entityMetadataEntry

Datatype

Field Name Field Type Notes

key u8

type

varint enum

0	byte
1	int
2	long
3	float
4	string
5	component
6	optional component
7	item stack
8	boolean
9	rotations
10	block pos
11	optional block pos
12	direction
13	optional uuid
14	block state
15	optional block state
16	compound tag
17	particle
18	particles
19	villager data
20	optional unsigned int
21	pose
22	cat variant
23	wolf variant
24	frog variant
25	optional global pos
26	painting variant
27	sniffer state
28	armadillo state
29	vector3
30	quaternion

value

if type

is byte i8

is int varint

is long varlong

is float f32

is string string

is component anonymousNbt

is item stack Slot

is boolean bool

is rotations

pitch	f32
yaw	f32
roll	f32

is block pos position

is direction varint

is block state varint

is optional block state optvarint

is compound tag anonymousNbt

is particle Particle

is particles length varint

is particles

array

Particle

is villager data

villagerType	varint
villagerProfession	varint
level	varint

is optional unsigned int optvarint

is pose varint

is cat variant varint

is wolf variant varint

is frog variant varint

is painting variant varint

is sniffer state varint

is armadillo state varint

is vector3 vec3f

is quaternion vec4f

Type

minecraft simple recipe format

Datatype

Field Name	Field Type	Notes
category	varint

Type

minecraft smelting format

Datatype

Field Name	Field Type	Notes
group	string
category	varint
ingredient	ingredient
result	Slot
experience	f32
cookTime	varint

Type

tags

Datatype

Field Name Field Type Notes

tags length varint

tags

array

tagName	string
entries length	varint
entries array	varint

Type

chunkBlockEntity

Datatype

Field Name	Field Type	Notes
y	i16
type	varint
nbtData	anonOptionalNbt

Type

chat session

Datatype

Field Name Field Type Notes

uuid UUID

publicKey

expireTime i64

Type

game profile

Datatype

Field Name Field Type Notes

name string

properties length varint

properties

array

key	string
value	string
signature optional	string

Type

command node

Datatype

Field Name Field Type Notes

children length varint

children

array

varint

redirectNode

if flags/has redirect node

is 1	varint
default	void

extraNodeData

if flags/command node type

is 0 void

is 1

name string

is 2

name string

parser

varint enum

0	brigadier:bool
1	brigadier:float
2	brigadier:double
3	brigadier:integer
4	brigadier:long
5	brigadier:string
6	minecraft:entity
7	minecraft:game profile
8	minecraft:block pos
9	minecraft:column pos
10	minecraft:vec3
11	minecraft:vec2
12	minecraft:block state
13	minecraft:block predicate
14	minecraft:item stack
15	minecraft:item predicate
16	minecraft:color
17	minecraft:component
18	minecraft:style
19	minecraft:message
20	minecraft:nbt
21	minecraft:nbt tag
22	minecraft:nbt path
23	minecraft:objective
24	minecraft:objective criteria
25	minecraft:operation
26	minecraft:particle
27	minecraft:angle
28	minecraft:rotation
29	minecraft:scoreboard slot
30	minecraft:score holder
31	minecraft:swizzle
32	minecraft:team
33	minecraft:item slot
34	minecraft:item slots
35	minecraft:resource location
36	minecraft:function
37	minecraft:entity anchor
38	minecraft:int range
39	minecraft:float range
40	minecraft:dimension
41	minecraft:gamemode
42	minecraft:time
43	minecraft:resource or tag
44	minecraft:resource or tag key
45	minecraft:resource
46	minecraft:resource key
47	minecraft:template mirror
48	minecraft:template rotation
49	minecraft:heightmap
50	minecraft:loot table
51	minecraft:loot predicate
52	minecraft:loot modifier
53	minecraft:uuid

properties

if parser

is brigadier:bool void

is brigadier:float

min

if flags/min present

is 1	f32
default	void

max

if flags/max present

is 1	f32
default	void

is brigadier:double

min

if flags/min present

is 1	f64
default	void

max

if flags/max present

is 1	f64
default	void

is brigadier:integer

min

if flags/min present

is 1	i32
default	void

max

if flags/max present

is 1	i32
default	void

is brigadier:long

min

if flags/min present

is 1	i64
default	void

max

if flags/max present

is 1	i64
default	void

is brigadier:string

varint enum

0	SINGLE WORD
1	QUOTABLE PHRASE
2	GREEDY PHRASE

is minecraft:game profile void

is minecraft:block pos void

is minecraft:column pos void

is minecraft:vec3 void

is minecraft:vec2 void

is minecraft:block state void

is minecraft:block predicate void

is minecraft:item stack void

is minecraft:item predicate void

is minecraft:color void

is minecraft:component void

is minecraft:message void

is minecraft:nbt void

is minecraft:nbt path void

is minecraft:objective void

is minecraft:objective criteria void

is minecraft:operation void

is minecraft:particle void

is minecraft:angle void

is minecraft:rotation void

is minecraft:scoreboard slot void

is minecraft:swizzle void

is minecraft:team void

is minecraft:item slot void

is minecraft:resource location void

is minecraft:function void

is minecraft:entity anchor void

is minecraft:int range void

is minecraft:float range void

is minecraft:dimension void

is minecraft:gamemode void

is minecraft:time

min i32

is minecraft:resource or tag

registry string

is minecraft:resource or tag key

registry string

is minecraft:resource

registry string

is minecraft:resource key

registry string

is minecraft:template mirror void

is minecraft:template rotation void

is minecraft:heightmap void

is minecraft:uuid void

suggestionType

if ../flags/has custom suggestions

is 1	string
default	void

Shared Packets

These are packets that are shared between multiple states. They are defined here to avoid duplication.

Type

packet common cookie request

Datatype

MC: ClientboundCookieRequestPacket

Field Name	Field Type	Notes
cookie	string

Type

packet common store cookie

Datatype

MC: ClientboundStoreCookiePacket

Field Name	Field Type	Notes
key	string
value	ByteArray

Type

packet common transfer

Datatype

MC: ClientboundTransferPacket

Field Name	Field Type	Notes
host	string
port	varint

Type

packet common cookie response

Datatype

MC: ServerboundCookieResponsePacket

Field Name	Field Type	Notes
key	string
value	ByteArray

Type

packet common select known packs

Datatype

MC: ServerboundSelectKnownPacks MC: ClientboundSelectKnownPacks

Field Name Field Type Notes

packs length varint

packs

array

namespace	string
id	string
version	string

Key	Name
Type	packet

Type

packet

Datatype

Field Name Field Type Notes

name

varint enum

Key	Name
Type	packet_set_protocol
0xfe	packet_legacy_server_list_ping
Type	packet

packet set protocol

handshaking / toServer / packet_set_protocol (0x00)

Field Name	Field Type	Notes
protocolVersion	varint
serverHost	string
serverPort	u16
nextState	varint

254

packet legacy server list ping

handshaking / toServer / packet_legacy_server_list_ping (0xfe)

Field Name	Field Type	Notes
payload	u8

Type

packet

handshaking / toServer / packet

Field Name Field Type Notes

name

varint enum

0	set protocol
254	legacy server list ping

params

if name

is set protocol	packet_set_protocol
is legacy server list ping	packet_legacy_server_list_ping

Key	Name
Type	packet_server_info
0x1	packet_ping
Type	packet

packet server info

status / toClient / packet_server_info (0x00)

MC: ClientboundStatusResponsePacket

Field Name	Field Type	Notes
response	string

packet ping

status / toClient / packet_ping (0x01)

MC: ClientboundPongResponsePacket

Field Name	Field Type	Notes
time	i64

Type

packet

status / toClient / packet

Field Name Field Type Notes

name

varint enum

0	server info
1	ping

params

if name

is server info	packet_server_info
is ping	packet_ping

Key	Name
Type	packet_ping_start
0x1	packet_ping
Type	packet

packet ping start

status / toServer / packet_ping_start (0x00)

MC: ServerboundStatusRequestPacket

Field Name	Field Type	Notes

packet ping

status / toServer / packet_ping (0x01)

Empty MC: ServerboundPingRequestPacket

Field Name	Field Type	Notes
time	i64

Type

packet

status / toServer / packet

Field Name Field Type Notes

name

varint enum

0	ping start
1	ping

params

if name

is ping start	packet_ping_start
is ping	packet_ping

Key	Name
Type	packet_disconnect
0x1	packet_encryption_begin
0x2	packet_success
0x3	packet_compress
0x4	packet_login_plugin_request
Type	packet

MC: ClientboundLoginDisconnectPacket

Field Name	Field Type	Notes
reason	string

MC: ClientboundHelloPacket

Field Name	Field Type	Notes
serverId	string
shouldAuthenticate	bool

MC: ClientboundGameProfilePacket

Field Name Field Type Notes

uuid UUID

username string

properties length varint

properties

array

name	string
value	string
signature optional	string

strictErrorHandling bool

MC: ClientboundLoginCompressionPacket

Field Name	Field Type	Notes
threshold	varint

MC: ClientboundCustomQueryPacket

Field Name	Field Type	Notes
messageId	varint
channel	string
data	restBuffer

Field Name Field Type Notes

name

varint enum

0	disconnect
1	encryption begin
2	success
3	compress
4	login plugin request
5	cookie request

params

if name

is disconnect	packet_disconnect
is encryption begin	packet_encryption_begin
is success	packet_success
is compress	packet_compress
is login plugin request	packet_login_plugin_request
is cookie request	packet_common_cookie_request

Key	Name
Type	packet_login_start
0x1	packet_encryption_begin
0x2	packet_login_plugin_response
0x3	packet_login_acknowledged
Type	packet

MC: ServerboundHelloPacket

Field Name	Field Type	Notes
username	string
playerUUID	UUID

MC: ServerboundKeyPacket

Field Name	Field Type	Notes

MC: ServerboundCustomQueryAnswerPacket

Field Name	Field Type	Notes
messageId	varint
data optional	restBuffer

MC: ServerboundLoginAcknowledgedPacket

Field Name	Field Type	Notes

Empty

Field Name Field Type Notes

name

varint enum

0	login start
1	encryption begin
2	login plugin response
3	login acknowledged
4	cookie response

params

if name

is login start	packet_login_start
is encryption begin	packet_encryption_begin
is login plugin response	packet_login_plugin_response
is login acknowledged	packet_login_acknowledged
is cookie response	packet_common_cookie_response

Key	Name
0x1	packet_custom_payload
0x2	packet_disconnect
0x3	packet_finish_configuration
0x4	packet_keep_alive
0x5	packet_ping
0x6	packet_reset_chat
0x7	packet_registry_data
0x8	packet_remove_resource_pack
0x9	packet_add_resource_pack
0xc	packet_feature_flags
0xd	packet_tags
Type	packet

packet custom payload

configuration / toClient / packet_custom_payload (0x01)

MC: ClientboundCustomPayloadPacket

Field Name	Field Type	Notes
channel	string
data	restBuffer

packet disconnect

configuration / toClient / packet_disconnect (0x02)

MC: ClientboundDisconnectPacket

Field Name	Field Type	Notes
reason	anonymousNbt

packet finish configuration

configuration / toClient / packet_finish_configuration (0x03)

MC: ClientboundFinishConfigurationPacket

Field Name	Field Type	Notes

packet keep alive

configuration / toClient / packet_keep_alive (0x04)

Empty MC: ClientboundKeepAlivePacket

Field Name	Field Type	Notes
keepAliveId	i64

packet ping

configuration / toClient / packet_ping (0x05)

MC: ClientboundPingPacket

Field Name	Field Type	Notes
id	i32

packet reset chat

configuration / toClient / packet_reset_chat (0x06)

MC: ClientboundResetChatPacket

Field Name	Field Type	Notes

packet registry data

configuration / toClient / packet_registry_data (0x07)

Empty MC: ClientboundRegistryDataPacket

Field Name Field Type Notes

string

The server can send multiple registries

entries length varint

entries

array

key	string
value optional	anonymousNbt

packet remove resource pack

configuration / toClient / packet_remove_resource_pack (0x08)

MC: ClientboundResourcePackPopPacket

Field Name	Field Type	Notes
uuid optional	UUID

packet add resource pack

configuration / toClient / packet_add_resource_pack (0x09)

MC: ClientboundResourcePackPushPacket

Field Name	Field Type	Notes
uuid	UUID
url	string
hash	string
forced	bool
promptMessage optional	anonymousNbt

packet feature flags

configuration / toClient / packet_feature_flags (0x0c)

MC: ClientboundUpdateEnabledFeaturesPacket

Field Name	Field Type	Notes
features length	varint
features array	string

packet tags

configuration / toClient / packet_tags (0x0d)

MC: ClientboundUpdateTagsPacket

Field Name Field Type Notes

tags length varint

tags

array

tagType	string
tags	tags

Type

packet

configuration / toClient / packet

Field Name Field Type Notes

name

varint enum

0	cookie request
1	custom payload
2	disconnect
3	finish configuration
4	keep alive
5	ping
6	reset chat
7	registry data
8	remove resource pack
9	add resource pack
10	store cookie
11	transfer
12	feature flags
13	tags
14	select known packs

params

if name

is cookie request	packet_common_cookie_request
is custom payload	packet_custom_payload
is disconnect	packet_disconnect
is finish configuration	packet_finish_configuration
is keep alive	packet_keep_alive
is ping	packet_ping
is reset chat	packet_reset_chat
is registry data	packet_registry_data
is remove resource pack	packet_remove_resource_pack
is add resource pack	packet_add_resource_pack
is store cookie	packet_common_store_cookie
is transfer	packet_common_transfer
is feature flags	packet_feature_flags
is tags	packet_tags
is select known packs	packet_common_select_known_packs

Key	Name
Type	packet_settings
0x2	packet_custom_payload
0x3	packet_finish_configuration
0x4	packet_keep_alive
0x5	packet_pong
0x6	packet_resource_pack_receive
Type	packet

packet settings

configuration / toServer / packet_settings (0x00)

MC: ServerboundClientInformationPacket

Field Name	Field Type	Notes
locale	string
viewDistance	i8
chatFlags	varint
chatColors	bool
skinParts	u8
mainHand	varint
enableTextFiltering	bool
enableServerListing	bool

packet custom payload

configuration / toServer / packet_custom_payload (0x02)

MC: ServerboundCustomPayloadPacket

Field Name	Field Type	Notes
channel	string
data	restBuffer

packet finish configuration

configuration / toServer / packet_finish_configuration (0x03)

MC: ServerboundFinishConfigurationPacket

Field Name	Field Type	Notes

packet keep alive

configuration / toServer / packet_keep_alive (0x04)

Empty MC: ServerboundKeepAlivePacket

Field Name	Field Type	Notes
keepAliveId	i64

packet pong

configuration / toServer / packet_pong (0x05)

MC: ServerboundPongPacket

Field Name	Field Type	Notes
id	i32

packet resource pack receive

configuration / toServer / packet_resource_pack_receive (0x06)

MC: ServerboundResourcePackPacket

Field Name	Field Type	Notes
uuid	UUID
result	varint

Type

packet

configuration / toServer / packet

Field Name Field Type Notes

name

varint enum

0	settings
1	cookie response
2	custom payload
3	finish configuration
4	keep alive
5	pong
6	resource pack receive
7	select known packs

params

if name

is settings	packet_settings
is cookie response	packet_common_cookie_response
is custom payload	packet_custom_payload
is finish configuration	packet_finish_configuration
is keep alive	packet_keep_alive
is pong	packet_pong
is resource pack receive	packet_resource_pack_receive
is select known packs	packet_common_select_known_packs

Key	Name
Type	SpawnInfo
0x1	packet_spawn_entity
0x2	packet_spawn_entity_experience_orb
0x3	packet_animation
0x4	packet_statistics
0x5	packet_acknowledge_player_digging
0x6	packet_block_break_animation
0x7	packet_tile_entity_data
0x8	packet_block_action
0x9	packet_block_change
0xa	packet_boss_bar
0xb	packet_difficulty
0xc	packet_chunk_batch_finished
0xd	packet_chunk_batch_start
0xe	packet_chunk_biomes
0xf	packet_clear_titles
0x10	packet_tab_complete
0x11	packet_declare_commands
0x12	packet_close_window
0x13	packet_window_items
0x14	packet_craft_progress_bar
0x15	packet_set_slot
0x17	packet_set_cooldown
0x18	packet_chat_suggestions
0x19	packet_custom_payload
0x1a	packet_damage_event
0x1b	packet_debug_sample
0x1c	packet_hide_message
0x1d	packet_kick_disconnect
0x1e	packet_profileless_chat
0x1f	packet_entity_status
0x20	packet_explosion
0x21	packet_unload_chunk
0x22	packet_game_state_change
0x23	packet_open_horse_window
0x24	packet_hurt_animation
0x25	packet_initialize_world_border
0x26	packet_keep_alive
0x27	packet_map_chunk
0x28	packet_world_event
0x29	packet_world_particles
0x2a	packet_update_light
0x2b	packet_login
0x2c	packet_map
0x2d	packet_trade_list
0x2e	packet_rel_entity_move
0x2f	packet_entity_move_look
0x30	packet_entity_look
0x31	packet_vehicle_move
0x32	packet_open_book
0x33	packet_open_window
0x34	packet_open_sign_entity
0x35	packet_ping
0x36	packet_ping_response
0x37	packet_craft_recipe_response
0x38	packet_abilities
0x39	packet_player_chat
0x3a	packet_end_combat_event
0x3b	packet_enter_combat_event
0x3c	packet_death_combat_event
0x3d	packet_player_remove
0x3e	packet_player_info
0x3f	packet_face_player
0x40	packet_position
0x41	packet_unlock_recipes
0x42	packet_entity_destroy
0x43	packet_remove_entity_effect
0x44	packet_reset_score
0x45	packet_remove_resource_pack
0x46	packet_add_resource_pack
0x47	packet_respawn
0x48	packet_entity_head_rotation
0x49	packet_multi_block_change
0x4a	packet_select_advancement_tab
0x4b	packet_server_data
0x4c	packet_action_bar
0x4d	packet_world_border_center
0x4e	packet_world_border_lerp_size
0x4f	packet_world_border_size
0x50	packet_world_border_warning_delay
0x51	packet_world_border_warning_reach
0x52	packet_camera
0x53	packet_held_item_slot
0x54	packet_update_view_position
0x55	packet_update_view_distance
0x56	packet_spawn_position
0x57	packet_scoreboard_display_objective
0x58	packet_entity_metadata
0x59	packet_attach_entity
0x5a	packet_entity_velocity
0x5b	packet_entity_equipment
0x5c	packet_experience
0x5d	packet_update_health
0x5e	packet_scoreboard_objective
0x5f	packet_set_passengers
0x60	packet_teams
0x61	packet_scoreboard_score
0x62	packet_simulation_distance
0x63	packet_set_title_subtitle
0x64	packet_update_time
0x65	packet_set_title_text
0x66	packet_set_title_time
0x67	packet_entity_sound_effect
0x68	packet_sound_effect
0x69	packet_start_configuration
0x6a	packet_stop_sound
0x6c	packet_system_chat
0x6d	packet_playerlist_header
0x6e	packet_nbt_query_response
0x6f	packet_collect
0x70	packet_entity_teleport
0x71	packet_set_ticking_state
0x72	packet_step_tick
0x74	packet_advancements
0x75	packet_entity_update_attributes
0x76	packet_entity_effect
0x77	packet_declare_recipes
0x78	packet_tags
Type	packet_set_projectile_power
Type	packet

Type

SpawnInfo

play / toClient / SpawnInfo

World state information for spawn and respawn packets

Field Name Field Type Notes

dimension varint

name string

hashedSeed i64

gamemode

i8 enum

0	survival
1	creative
2	adventure
3	spectator

previousGamemode u8

isDebug bool

isFlat bool

death

optional

dimensionName	string
location	position

portalCooldown varint

packet spawn entity

play / toClient / packet_spawn_entity (0x01)

MC: ClientboundAddEntityPacket

Field Name	Field Type	Notes
entityId	varint
objectUUID	UUID
type	varint
x	f64
y	f64
z	f64
pitch	i8
yaw	i8
headPitch	i8
objectData	varint
velocityX	i16
velocityY	i16
velocityZ	i16

packet spawn entity experience orb

play / toClient / packet_spawn_entity_experience_orb (0x02)

MC: ClientboundAddExperienceOrbPacket

Field Name	Field Type	Notes
entityId	varint
x	f64
y	f64
z	f64
count	i16

packet animation

play / toClient / packet_animation (0x03)

MC: ClientboundAnimatePacket

Field Name	Field Type	Notes
entityId	varint
animation	u8

packet statistics

play / toClient / packet_statistics (0x04)

MC: ClientboundAwardStatsPacket

Field Name Field Type Notes

entries length varint

entries

array

categoryId	varint
statisticId	varint
value	varint

packet acknowledge player digging

play / toClient / packet_acknowledge_player_digging (0x05)

MC: ClientboundBlockChangedAckPacket

Field Name	Field Type	Notes
sequenceId	varint

packet block break animation

play / toClient / packet_block_break_animation (0x06)

MC: ClientboundBlockDestructionPacket

Field Name	Field Type	Notes
entityId	varint
location	position
destroyStage	i8

packet tile entity data

play / toClient / packet_tile_entity_data (0x07)

MC: ClientboundBlockEntityDataPacket

Field Name	Field Type	Notes
location	position
action	varint
nbtData	anonOptionalNbt

packet block action

play / toClient / packet_block_action (0x08)

MC: ClientboundBlockEventPacket

Field Name	Field Type	Notes
location	position
byte1	u8
byte2	u8
blockId	varint

packet block change

play / toClient / packet_block_change (0x09)

MC: ClientboundBlockUpdatePacket

Field Name	Field Type	Notes
location	position
type	varint

packet boss bar

play / toClient / packet_boss_bar (0x0a)

MC: ClientboundBossEventPacket

Field Name Field Type Notes

entityUUID UUID

action varint

title

if action

is 0	anonymousNbt
is 3	anonymousNbt
default	void

health

if action

is 0	f32
is 2	f32
default	void

color

if action

is 0	varint
is 4	varint
default	void

dividers

if action

is 0	varint
is 4	varint
default	void

flags

if action

is 0	u8
is 5	u8
default	void

packet difficulty

play / toClient / packet_difficulty (0x0b)

MC: ClientboundChangeDifficultyPacket

Field Name	Field Type	Notes
difficulty	u8
difficultyLocked	bool

packet chunk batch finished

play / toClient / packet_chunk_batch_finished (0x0c)

MC: ClientboundChunkBatchFinishedPacket

Field Name	Field Type	Notes
batchSize	varint

packet chunk batch start

play / toClient / packet_chunk_batch_start (0x0d)

MC: ClientboundChunkBatchStartPacket

Field Name	Field Type	Notes

packet chunk biomes

play / toClient / packet_chunk_biomes (0x0e)

Empty MC: ClientboundChunksBiomesPacket

Field Name Field Type Notes

biomes length varint

biomes

array

position	packedChunkPos
data	ByteArray

packet clear titles

play / toClient / packet_clear_titles (0x0f)

MC: ClientboundClearTitlesPacket

Field Name	Field Type	Notes
reset	bool

packet tab complete

play / toClient / packet_tab_complete (0x10)

MC: ClientboundCommandSuggestionsPacket

Field Name Field Type Notes

transactionId varint

start varint

length varint

matches length varint

matches

array

match	string
tooltip optional	anonymousNbt

packet declare commands

play / toClient / packet_declare_commands (0x11)

MC: ClientboundCommandsPacket

Field Name	Field Type	Notes
nodes length	varint
nodes array	command_node
rootIndex	varint

packet close window

play / toClient / packet_close_window (0x12)

MC: ClientboundContainerClosePacket

Field Name	Field Type	Notes
windowId	u8

packet window items

play / toClient / packet_window_items (0x13)

MC: ClientboundContainerSetContentPacket

Field Name	Field Type	Notes
windowId	u8
stateId	varint
items length	varint
items array	Slot
carriedItem	Slot

packet craft progress bar

play / toClient / packet_craft_progress_bar (0x14)

MC: ClientboundContainerSetDataPacket

Field Name	Field Type	Notes
windowId	u8
property	i16
value	i16

packet set slot

play / toClient / packet_set_slot (0x15)

MC: ClientboundContainerSetSlotPacket

Field Name	Field Type	Notes
windowId	i8
stateId	varint
slot	i16
item	Slot

packet set cooldown

play / toClient / packet_set_cooldown (0x17)

MC: ClientboundCooldownPacket

Field Name	Field Type	Notes
itemID	varint
cooldownTicks	varint

packet chat suggestions

play / toClient / packet_chat_suggestions (0x18)

MC: ClientboundCustomChatCompletionsPacket

Field Name	Field Type	Notes
action	varint
entries length	varint
entries array	string

packet custom payload

play / toClient / packet_custom_payload (0x19)

MC: ClientboundCustomPayloadPacket

Field Name	Field Type	Notes
channel	string
data	restBuffer

packet damage event

play / toClient / packet_damage_event (0x1a)

MC: ClientboundDamageEventPacket

Field Name	Field Type	Notes
entityId	varint
sourceTypeId	varint
sourceCauseId	varint
sourceDirectId	varint
sourcePosition optional	vec3f64

packet debug sample

play / toClient / packet_debug_sample (0x1b)

MC: ClientboundDebugSamplePacket

Field Name	Field Type	Notes
sample length	varint
sample array	i64
type	varint

packet hide message

play / toClient / packet_hide_message (0x1c)

MC: ClientboundDeleteChatPacket

Field Name Field Type Notes

id varint

signature

if id

default void

packet kick disconnect

play / toClient / packet_kick_disconnect (0x1d)

MC: ClientboundDisconnectPacket

Field Name	Field Type	Notes
reason	anonymousNbt

packet profileless chat

play / toClient / packet_profileless_chat (0x1e)

MC: ClientboundDisguisedChatPacket

Field Name	Field Type	Notes
message	anonymousNbt
type	varint
name	anonymousNbt
target optional	anonymousNbt

packet entity status

play / toClient / packet_entity_status (0x1f)

MC: ClientboundEntityEventPacket

Field Name	Field Type	Notes
entityId	i32
entityStatus	i8

packet explosion

play / toClient / packet_explosion (0x20)

MC: ClientboundExplodePacket

Field Name Field Type Notes

x f64

y f64

z f64

radius f32

affectedBlockOffsets length varint

affectedBlockOffsets

array

x	i8
y	i8
z	i8

playerMotionX f32

playerMotionY f32

playerMotionZ f32

block interaction type varint

small explosion particle Particle

large explosion particle Particle

soundId varint

🔁

if soundId

is 0

soundName	string
range optional	f32

default

packet unload chunk

play / toClient / packet_unload_chunk (0x21)

MC: ClientboundForgetLevelChunkPacket

Field Name	Field Type	Notes
chunkZ	i32
chunkX	i32

packet game state change

play / toClient / packet_game_state_change (0x22)

MC: ClientboundGameEventPacket

Field Name	Field Type	Notes
reason	u8
gameMode	f32

packet open horse window

play / toClient / packet_open_horse_window (0x23)

MC: ClientboundHorseScreenOpenPacket

Field Name	Field Type	Notes
windowId	u8
nbSlots	varint
entityId	i32

packet hurt animation

play / toClient / packet_hurt_animation (0x24)

MC: ClientboundHurtAnimationPacket

Field Name	Field Type	Notes
entityId	varint
yaw	f32

packet initialize world border

play / toClient / packet_initialize_world_border (0x25)

MC: ClientboundInitializeBorderPacket

Field Name	Field Type	Notes
x	f64
z	f64
oldDiameter	f64
newDiameter	f64
speed	varint
portalTeleportBoundary	varint
warningBlocks	varint
warningTime	varint

packet keep alive

play / toClient / packet_keep_alive (0x26)

MC: ClientboundKeepAlivePacket

Field Name	Field Type	Notes
keepAliveId	i64

packet map chunk

play / toClient / packet_map_chunk (0x27)

MC: ClientboundLevelChunkWithLightPacket

Field Name Field Type Notes

x i32

z i32

heightmaps anonymousNbt

blockEntities length varint

blockEntities

array

chunkBlockEntity

skyLightMask length varint

skyLightMask

array

i64

blockLightMask length varint

blockLightMask

array

i64

emptySkyLightMask length varint

emptySkyLightMask

array

i64

emptyBlockLightMask length varint

emptyBlockLightMask

array

i64

skyLight length varint

skyLight

array

__1722 length	varint
__1722 array	u8

blockLight length varint

blockLight

array

__1724 length	varint
__1724 array	u8

packet world event

play / toClient / packet_world_event (0x28)

MC: ClientboundLevelEventPacket

Field Name	Field Type	Notes
effectId	i32
location	position
data	i32
global	bool

packet world particles

play / toClient / packet_world_particles (0x29)

MC: ClientboundLevelParticlesPacket

Field Name	Field Type	Notes
longDistance	bool
x	f64
y	f64
z	f64
offsetX	f32
offsetY	f32
offsetZ	f32
velocityOffset	f32
amount	i32
particle	Particle

packet update light

play / toClient / packet_update_light (0x2a)

MC: ClientboundLightUpdatePacket

Field Name Field Type Notes

chunkX varint

chunkZ varint

skyLightMask length varint

skyLightMask

array

i64

blockLightMask length varint

blockLightMask

array

i64

emptySkyLightMask length varint

emptySkyLightMask

array

i64

emptyBlockLightMask length varint

emptyBlockLightMask

array

i64

skyLight length varint

skyLight

array

__1752 length	varint
__1752 array	u8

blockLight length varint

blockLight

array

__1754 length	varint
__1754 array	u8

packet login

play / toClient / packet_login (0x2b)

MC: ClientboundLoginPacket

Field Name	Field Type	Notes
entityId	i32
isHardcore	bool
worldNames length	varint
worldNames array	string
maxPlayers	varint
viewDistance	varint
simulationDistance	varint
reducedDebugInfo	bool
enableRespawnScreen	bool
doLimitedCrafting	bool
worldState	SpawnInfo
enforcesSecureChat	bool

packet map

play / toClient / packet_map (0x2c)

MC: ClientboundMapItemDataPacket

Field Name Field Type Notes

itemDamage varint

scale i8

locked bool

icons length varint

icons

array

type	varint
x	i8
z	i8
direction	u8
displayName optional	anonymousNbt

columns u8

rows

if columns

is 0	void
default	u8

x

if columns

is 0	void
default	u8

y

if columns

is 0	void
default	u8

data

if columns

is 0 void

packet trade list

play / toClient / packet_trade_list (0x2d)

MC: ClientboundMerchantOffersPacket

Field Name Field Type Notes

windowId varint

trades length varint

trades

array

inputItem1

itemId	varint
itemCount	varint
addedComponentCount	varint
Length for components below is addedComponentCount* from above*
components array	SlotComponent

outputItem Slot

inputItem2

optional

itemId	varint
itemCount	varint
addedComponentCount	varint
Length for components below is addedComponentCount* from above*
components array	SlotComponent

tradeDisabled bool

nbTradeUses i32

maximumNbTradeUses i32

xp i32

specialPrice i32

priceMultiplier f32

demand i32

villagerLevel varint

experience varint

isRegularVillager bool

canRestock bool

packet rel entity move

play / toClient / packet_rel_entity_move (0x2e)

MC: ClientboundMoveEntityPacket.Pos

Field Name	Field Type	Notes
entityId	varint
dX	i16
dY	i16
dZ	i16
onGround	bool

packet entity move look

play / toClient / packet_entity_move_look (0x2f)

MC: ClientboundMoveEntityPacket.PosRot

Field Name	Field Type	Notes
entityId	varint
dX	i16
dY	i16
dZ	i16
yaw	i8
pitch	i8
onGround	bool

packet entity look

play / toClient / packet_entity_look (0x30)

MC: ClientboundMoveEntityPacket.Rot

Field Name	Field Type	Notes
entityId	varint
yaw	i8
pitch	i8
onGround	bool

packet vehicle move

play / toClient / packet_vehicle_move (0x31)

MC: ClientboundMoveVehiclePacket

Field Name	Field Type	Notes
x	f64
y	f64
z	f64
yaw	f32
pitch	f32

packet open book

play / toClient / packet_open_book (0x32)

MC: ClientboundOpenBookPacket

Field Name	Field Type	Notes
hand	varint

packet open window

play / toClient / packet_open_window (0x33)

MC: ClientboundOpenScreenPacket

Field Name	Field Type	Notes
windowId	varint
inventoryType	varint
windowTitle	anonymousNbt

packet open sign entity

play / toClient / packet_open_sign_entity (0x34)

MC: ClientboundOpenSignEditorPacket

Field Name	Field Type	Notes
location	position
isFrontText	bool

packet ping

play / toClient / packet_ping (0x35)

MC: ClientboundPingPacket

Field Name	Field Type	Notes
id	i32

packet ping response

play / toClient / packet_ping_response (0x36)

MC: ClientboundPongResponsePacket

Field Name	Field Type	Notes
id	i64

packet craft recipe response

play / toClient / packet_craft_recipe_response (0x37)

MC: ClientboundPlaceGhostRecipePacket

Field Name	Field Type	Notes
windowId	i8
recipe	string

packet abilities

play / toClient / packet_abilities (0x38)

MC: ClientboundPlayerAbilitiesPacket

Field Name	Field Type	Notes
flags	i8
flyingSpeed	f32
walkingSpeed	f32

packet player chat

play / toClient / packet_player_chat (0x39)

MC: ClientboundPlayerChatPacket

Field Name Field Type Notes

senderUuid UUID

index varint

plainMessage string

timestamp i64

salt i64

previousMessages previousMessages

unsignedChatContent

optional

anonymousNbt

filterType varint

filterTypeMask

if filterType

is 2 length	varint
is 2 array	i64
default	void

type varint

networkName anonymousNbt

networkTargetName

optional

anonymousNbt

packet end combat event

play / toClient / packet_end_combat_event (0x3a)

MC: ClientboundPlayerCombatEndPacket

Field Name	Field Type	Notes
duration	varint

packet enter combat event

play / toClient / packet_enter_combat_event (0x3b)

MC: ClientboundPlayerCombatEnterPacket

Field Name	Field Type	Notes

packet death combat event

play / toClient / packet_death_combat_event (0x3c)

Empty MC: ClientboundPlayerCombatKillPacket

Field Name	Field Type	Notes
playerId	varint
message	anonymousNbt

packet player remove

play / toClient / packet_player_remove (0x3d)

MC: ClientboundPlayerInfoRemovePacket

Field Name	Field Type	Notes
players length	varint
players array	UUID

packet player info

play / toClient / packet_player_info (0x3e)

MC: ClientboundPlayerInfoUpdatePacket

Field Name Field Type Notes

action i8

data length varint

data

array

uuid UUID

player

if ../action

is 1	game_profile
is 3	game_profile
is 5	game_profile
is 7	game_profile
is 9	game_profile
is 11	game_profile
is 13	game_profile
is 15	game_profile
is 17	game_profile
is 19	game_profile
is 21	game_profile
is 23	game_profile
is 25	game_profile
is 27	game_profile
is 29	game_profile
is 31	game_profile
is 33	game_profile
is 35	game_profile
is 37	game_profile
is 39	game_profile
is 41	game_profile
is 43	game_profile
is 45	game_profile
is 47	game_profile
is 49	game_profile
is 51	game_profile
is 53	game_profile
is 55	game_profile
is 57	game_profile
is 59	game_profile
is 61	game_profile
is 63	game_profile
default	void

chatSession

if ../action

is 2	chat_session
is 3	chat_session
is 6	chat_session
is 7	chat_session
is 10	chat_session
is 11	chat_session
is 14	chat_session
is 15	chat_session
is 18	chat_session
is 19	chat_session
is 22	chat_session
is 23	chat_session
is 26	chat_session
is 27	chat_session
is 30	chat_session
is 31	chat_session
is 34	chat_session
is 35	chat_session
is 38	chat_session
is 39	chat_session
is 42	chat_session
is 43	chat_session
is 46	chat_session
is 47	chat_session
is 50	chat_session
is 51	chat_session
is 54	chat_session
is 55	chat_session
is 58	chat_session
is 59	chat_session
is 62	chat_session
is 63	chat_session
default	void

gamemode

if ../action

is 4	varint
is 5	varint
is 6	varint
is 7	varint
is 12	varint
is 13	varint
is 14	varint
is 15	varint
is 20	varint
is 21	varint
is 22	varint
is 23	varint
is 28	varint
is 29	varint
is 30	varint
is 31	varint
is 36	varint
is 37	varint
is 38	varint
is 39	varint
is 44	varint
is 45	varint
is 46	varint
is 47	varint
is 52	varint
is 53	varint
is 54	varint
is 55	varint
is 60	varint
is 61	varint
is 62	varint
is 63	varint
default	void

listed

if ../action

is 8	bool
is 9	bool
is 10	bool
is 11	bool
is 12	bool
is 13	bool
is 14	bool
is 15	bool
is 24	bool
is 25	bool
is 26	bool
is 27	bool
is 28	bool
is 29	bool
is 30	bool
is 31	bool
is 40	bool
is 41	bool
is 42	bool
is 43	bool
is 44	bool
is 45	bool
is 46	bool
is 47	bool
is 56	bool
is 57	bool
is 58	bool
is 59	bool
is 60	bool
is 61	bool
is 62	bool
is 63	bool
default	void

latency

if ../action

is 16	varint
is 17	varint
is 18	varint
is 19	varint
is 20	varint
is 21	varint
is 22	varint
is 23	varint
is 24	varint
is 25	varint
is 26	varint
is 27	varint
is 28	varint
is 29	varint
is 30	varint
is 31	varint
is 48	varint
is 49	varint
is 50	varint
is 51	varint
is 52	varint
is 53	varint
is 54	varint
is 55	varint
is 56	varint
is 57	varint
is 58	varint
is 59	varint
is 60	varint
is 61	varint
is 62	varint
is 63	varint
default	void

displayName

if ../action

default void

packet face player

play / toClient / packet_face_player (0x3f)

MC: ClientboundPlayerLookAtPacket

Field Name Field Type Notes

feet eyes varint

x f64

y f64

z f64

isEntity bool

entityId

if isEntity

is true	varint
default	void

entity feet eyes

if isEntity

is true	varint
default	void

packet position

play / toClient / packet_position (0x40)

MC: ClientboundPlayerPositionPacket

Field Name	Field Type	Notes
x	f64
y	f64
z	f64
yaw	f32
pitch	f32
flags	i8
teleportId	varint

packet unlock recipes

play / toClient / packet_unlock_recipes (0x41)

MC: ClientboundRecipePacket

Field Name Field Type Notes

action varint

craftingBookOpen bool

filteringCraftable bool

smeltingBookOpen bool

filteringSmeltable bool

blastFurnaceOpen bool

filteringBlastFurnace bool

smokerBookOpen bool

filteringSmoker bool

recipes1 length varint

recipes1

array

string

recipes2

if action

is 0 length	varint
is 0 array	string
default	void

packet entity destroy

play / toClient / packet_entity_destroy (0x42)

MC: ClientboundRemoveEntitiesPacket

Field Name	Field Type	Notes
entityIds length	varint
entityIds array	varint

packet remove entity effect

play / toClient / packet_remove_entity_effect (0x43)

MC: ClientboundRemoveMobEffectPacket

Field Name	Field Type	Notes
entityId	varint
effectId	varint

packet reset score

play / toClient / packet_reset_score (0x44)

MC: ClientboundResetScorePacket

Field Name	Field Type	Notes
entity name	string
objective name optional	string

packet remove resource pack

play / toClient / packet_remove_resource_pack (0x45)

MC: ClientboundResourcePackPopPacket

Field Name	Field Type	Notes
uuid optional	UUID

packet add resource pack

play / toClient / packet_add_resource_pack (0x46)

MC: ClientboundResourcePackPushPacket

Field Name	Field Type	Notes
uuid	UUID
url	string
hash	string
forced	bool
promptMessage optional	anonymousNbt

packet respawn

play / toClient / packet_respawn (0x47)

MC: ClientboundRespawnPacket

Field Name	Field Type	Notes
worldState	SpawnInfo
copyMetadata	bool

packet entity head rotation

play / toClient / packet_entity_head_rotation (0x48)

MC: ClientboundRotateHeadPacket

Field Name	Field Type	Notes
entityId	varint
headYaw	i8

packet multi block change

play / toClient / packet_multi_block_change (0x49)

MC: ClientboundSectionBlocksUpdatePacket

Field Name	Field Type	Notes
records length	varint
records array	varint

packet select advancement tab

play / toClient / packet_select_advancement_tab (0x4a)

MC: ClientboundSelectAdvancementsTabPacket

Field Name	Field Type	Notes
id optional	string

packet server data

play / toClient / packet_server_data (0x4b)

MC: ClientboundServerDataPacket

Field Name	Field Type	Notes
motd	anonymousNbt
iconBytes optional	ByteArray

packet action bar

play / toClient / packet_action_bar (0x4c)

MC: ClientboundSetActionBarTextPacket

Field Name	Field Type	Notes
text	anonymousNbt

packet world border center

play / toClient / packet_world_border_center (0x4d)

MC: ClientboundSetBorderCenterPacket

Field Name	Field Type	Notes
x	f64
z	f64

packet world border lerp size

play / toClient / packet_world_border_lerp_size (0x4e)

MC: ClientboundSetBorderLerpSizePacket

Field Name	Field Type	Notes
oldDiameter	f64
newDiameter	f64
speed	varint

packet world border size

play / toClient / packet_world_border_size (0x4f)

MC: ClientboundSetBorderSizePacket

Field Name	Field Type	Notes
diameter	f64

packet world border warning delay

play / toClient / packet_world_border_warning_delay (0x50)

MC: ClientboundSetBorderWarningDelayPacket

Field Name	Field Type	Notes
warningTime	varint

packet world border warning reach

play / toClient / packet_world_border_warning_reach (0x51)

MC: ClientboundSetBorderWarningDistancePacket

Field Name	Field Type	Notes
warningBlocks	varint

packet camera

play / toClient / packet_camera (0x52)

MC: ClientboundSetCameraPacket

Field Name	Field Type	Notes
cameraId	varint

packet held item slot

play / toClient / packet_held_item_slot (0x53)

MC: ClientboundSetCarriedItemPacket

Field Name	Field Type	Notes
slot	i8

packet update view position

play / toClient / packet_update_view_position (0x54)

MC: ClientboundSetChunkCacheCenterPacket

Field Name	Field Type	Notes
chunkX	varint
chunkZ	varint

packet update view distance

play / toClient / packet_update_view_distance (0x55)

MC: ClientboundSetChunkCacheRadiusPacket

Field Name	Field Type	Notes
viewDistance	varint

packet spawn position

play / toClient / packet_spawn_position (0x56)

MC: ClientboundSetDefaultSpawnPositionPacket

Field Name	Field Type	Notes
location	position
angle	f32

packet scoreboard display objective

play / toClient / packet_scoreboard_display_objective (0x57)

MC: ClientboundSetDisplayObjectivePacket

Field Name	Field Type	Notes
position	varint
name	string

packet entity metadata

play / toClient / packet_entity_metadata (0x58)

MC: ClientboundSetEntityDataPacket

Field Name	Field Type	Notes
entityId	varint
metadata	entityMetadata

packet attach entity

play / toClient / packet_attach_entity (0x59)

MC: ClientboundSetEntityLinkPacket

Field Name	Field Type	Notes
entityId	i32
vehicleId	i32

packet entity velocity

play / toClient / packet_entity_velocity (0x5a)

MC: ClientboundSetEntityMotionPacket

Field Name	Field Type	Notes
entityId	varint
velocityX	i16
velocityY	i16
velocityZ	i16

packet entity equipment

play / toClient / packet_entity_equipment (0x5b)

MC: ClientboundSetEquipmentPacket

Field Name	Field Type	Notes
entityId	varint

packet experience

play / toClient / packet_experience (0x5c)

MC: ClientboundSetExperiencePacket

Field Name	Field Type	Notes
experienceBar	f32
level	varint
totalExperience	varint

packet update health

play / toClient / packet_update_health (0x5d)

MC: ClientboundSetHealthPacket

Field Name	Field Type	Notes
health	f32
food	varint
foodSaturation	f32

packet scoreboard objective

play / toClient / packet_scoreboard_objective (0x5e)

MC: ClientboundSetObjectivePacket

Field Name Field Type Notes

name string

action i8

displayText

if action

is 0	anonymousNbt
is 2	anonymousNbt
default	void

type

if action

is 0	varint
is 2	varint
default	void

number format

if action

default void

styling

if action

if 0

if number format

is 1	anonymousNbt
is 2	anonymousNbt
default	void

if 2

if number format

is 1	anonymousNbt
is 2	anonymousNbt
default	void

default void

packet set passengers

play / toClient / packet_set_passengers (0x5f)

MC: ClientboundSetPassengersPacket

Field Name	Field Type	Notes
entityId	varint
passengers length	varint
passengers array	varint

packet teams

play / toClient / packet_teams (0x60)

MC: ClientboundSetPlayerTeamPacket

Field Name Field Type Notes

team string

mode i8

name

if mode

is 0	anonymousNbt
is 2	anonymousNbt
default	void

friendlyFire

if mode

is 0	i8
is 2	i8
default	void

nameTagVisibility

if mode

is 0	string
is 2	string
default	void

collisionRule

if mode

is 0	string
is 2	string
default	void

formatting

if mode

is 0	varint
is 2	varint
default	void

prefix

if mode

is 0	anonymousNbt
is 2	anonymousNbt
default	void

suffix

if mode

is 0	anonymousNbt
is 2	anonymousNbt
default	void

players

if mode

is 0 length	varint
is 0 array	string
is 3 length	varint
is 3 array	string
is 4 length	varint
is 4 array	string
default	void

packet scoreboard score

play / toClient / packet_scoreboard_score (0x61)

MC: ClientboundSetScorePacket

Field Name Field Type Notes

itemName string

scoreName string

value varint

display name

optional

anonymousNbt

number format

optional

varint

styling

if number format

is 1	anonymousNbt
is 2	anonymousNbt
default	void

packet simulation distance

play / toClient / packet_simulation_distance (0x62)

MC: ClientboundSetSimulationDistancePacket

Field Name	Field Type	Notes
distance	varint

packet set title subtitle

play / toClient / packet_set_title_subtitle (0x63)

MC: ClientboundSetSubtitleTextPacket

Field Name	Field Type	Notes
text	anonymousNbt

100

packet update time

play / toClient / packet_update_time (0x64)

MC: ClientboundSetTimePacket

Field Name	Field Type	Notes
age	i64
time	i64

101

packet set title text

play / toClient / packet_set_title_text (0x65)

MC: ClientboundSetTitleTextPacket

Field Name	Field Type	Notes
text	anonymousNbt

102

packet set title time

play / toClient / packet_set_title_time (0x66)

MC: ClientboundSetTitlesAnimationPacket

Field Name	Field Type	Notes
fadeIn	i32
stay	i32
fadeOut	i32

103

packet entity sound effect

play / toClient / packet_entity_sound_effect (0x67)

MC: ClientboundSoundEntityPacket

Field Name Field Type Notes

soundId varint

soundEvent

if soundId

is 0

resource	string
range optional	f32

default void

soundCategory soundSource

entityId varint

volume f32

pitch f32

seed i64

104

packet sound effect

play / toClient / packet_sound_effect (0x68)

MC: ClientboundSoundPacket

Field Name Field Type Notes

soundId varint

soundEvent

if soundId

is 0

resource	string
range optional	f32

soundCategory soundSource

x i32

y i32

z i32

volume f32

pitch f32

seed i64

105

packet start configuration

play / toClient / packet_start_configuration (0x69)

MC: ClientboundStartConfigurationPacket

Field Name	Field Type	Notes

106

packet stop sound

play / toClient / packet_stop_sound (0x6a)

Empty MC: ClientboundStopSoundPacket

Field Name Field Type Notes

flags i8

source

if flags

is 1	varint
is 3	varint
default	void

sound

if flags

is 2	string
is 3	string
default	void

108

packet system chat

play / toClient / packet_system_chat (0x6c)

MC: ClientboundSystemChatPacket

Field Name	Field Type	Notes
content	anonymousNbt
isActionBar	bool

109

packet playerlist header

play / toClient / packet_playerlist_header (0x6d)

MC: ClientboundTabListPacket

Field Name	Field Type	Notes
header	anonymousNbt
footer	anonymousNbt

110

packet nbt query response

play / toClient / packet_nbt_query_response (0x6e)

MC: ClientboundTagQueryPacket

Field Name	Field Type	Notes
transactionId	varint
nbt	anonOptionalNbt

111

packet collect

play / toClient / packet_collect (0x6f)

MC: ClientboundTakeItemEntityPacket

Field Name	Field Type	Notes
collectedEntityId	varint
collectorEntityId	varint
pickupItemCount	varint

112

packet entity teleport

play / toClient / packet_entity_teleport (0x70)

MC: ClientboundTeleportEntityPacket

Field Name	Field Type	Notes
entityId	varint
x	f64
y	f64
z	f64
yaw	i8
pitch	i8
onGround	bool

113

packet set ticking state

play / toClient / packet_set_ticking_state (0x71)

MC: ClientboundTickingStatePacket

Field Name	Field Type	Notes
tick rate	f32
is frozen	bool

114

packet step tick

play / toClient / packet_step_tick (0x72)

MC: ClientboundTickingStepPacket

Field Name	Field Type	Notes
tick steps	varint

116

packet advancements

play / toClient / packet_advancements (0x74)

MC: ClientboundUpdateAdvancementsPacket

Field Name Field Type Notes

reset bool

advancementMapping length varint

advancementMapping

array

key string

value

parentId

optional

string

displayData

optional

title anonymousNbt

description anonymousNbt

icon Slot

frameType varint

backgroundTexture

if flags/has background texture

is 1	string
default	void

xCord f32

yCord f32

requirements length varint

requirements

array

__2592 length	varint
__2592 array	string

sendsTelemtryData bool

identifiers length varint

identifiers

array

string

progressMapping length varint

progressMapping

array

key string

value length varint

value

array

criterionIdentifier	string
criterionProgress optional	i64

117

packet entity update attributes

play / toClient / packet_entity_update_attributes (0x75)

MC: ClientboundUpdateAttributesPacket

Field Name Field Type Notes

entityId varint

properties length varint

properties

array

key

varint enum

0	generic.armor
1	generic.armor toughness
2	generic.attack damage
3	generic.attack knockback
4	generic.attack speed
5	player.block break speed
6	player.block interaction range
7	player.entity interaction range
8	generic.fall damage multiplier
9	generic.flying speed
10	generic.follow range
11	generic.gravity
12	generic.jump strength
13	generic.knockback resistance
14	generic.luck
15	generic.max absorption
16	generic.max health
17	generic.movement speed
18	generic.safe fall distance
19	generic.scale
20	zombie.spawn reinforcements
21	generic.step height

value f64

modifiers length varint

modifiers

array

uuid	UUID
amount	f64
operation	i8

118

packet entity effect

play / toClient / packet_entity_effect (0x76)

MC: ClientboundUpdateMobEffectPacket

Field Name	Field Type	Notes
entityId	varint
effectId	varint
amplifier	varint
duration	varint
flags	u8	a bitfield of 0x01 for ambient, 0x02 for show particles flags: ["bitfield", [ { "name": "unused", "size": 4 }, { "name": "ambient", "size": 1 }, { "name": "showParticles", "size": 1 }, { "name": "showIcon", "size": 1 }, { "name": "blend", "size": 1 } ]]

119

packet declare recipes

play / toClient / packet_declare_recipes (0x77)

MC: ClientboundUpdateRecipesPacket

Field Name Field Type Notes

recipes length varint

recipes

array

name string

type

varint enum

0	minecraft:crafting shaped
1	minecraft:crafting shapeless
2	minecraft:crafting special armordye
3	minecraft:crafting special bookcloning
4	minecraft:crafting special mapcloning
5	minecraft:crafting special mapextending
6	minecraft:crafting special firework rocket
7	minecraft:crafting special firework star
8	minecraft:crafting special firework star fade
9	minecraft:crafting special tippedarrow
10	minecraft:crafting special bannerduplicate
11	minecraft:crafting special shielddecoration
12	minecraft:crafting special shulkerboxcoloring
13	minecraft:crafting special suspiciousstew
14	minecraft:crafting special repairitem
15	minecraft:smelting
16	minecraft:blasting
17	minecraft:smoking
18	minecraft:campfire cooking
19	minecraft:stonecutting
20	minecraft:smithing transform
21	minecraft:smithing trim
22	minecraft:crafting decorated pot

data

if type

is minecraft:crafting shapeless

group	string
category	varint
ingredients length	varint
ingredients array	ingredient
result	Slot

is minecraft:crafting shaped

group string

category varint

width varint

height varint

Length for ingredients below is width from above

ingredients

array

Length for __2687 below is height* from above*
__2687 array	ingredient

result Slot

showNotification bool

is minecraft:crafting special armordye minecraft_simple_recipe_format

is minecraft:crafting special bookcloning minecraft_simple_recipe_format

is minecraft:crafting special mapcloning minecraft_simple_recipe_format

is minecraft:crafting special mapextending minecraft_simple_recipe_format

is minecraft:crafting special firework rocket minecraft_simple_recipe_format

is minecraft:crafting special firework star minecraft_simple_recipe_format

is minecraft:crafting special firework star fade minecraft_simple_recipe_format

is minecraft:crafting special repairitem minecraft_simple_recipe_format

is minecraft:crafting special tippedarrow minecraft_simple_recipe_format

is minecraft:crafting special bannerduplicate minecraft_simple_recipe_format

is minecraft:crafting special banneraddpattern minecraft_simple_recipe_format

is minecraft:crafting special shielddecoration minecraft_simple_recipe_format

is minecraft:crafting special shulkerboxcoloring minecraft_simple_recipe_format

is minecraft:crafting special suspiciousstew minecraft_simple_recipe_format

is minecraft:smelting minecraft_smelting_format

is minecraft:blasting minecraft_smelting_format

is minecraft:smoking minecraft_smelting_format

is minecraft:campfire cooking minecraft_smelting_format

is minecraft:stonecutting

group	string
ingredient	ingredient
result	Slot

is minecraft:smithing transform

template	ingredient
base	ingredient
addition	ingredient
result	Slot

is minecraft:smithing trim

template	ingredient
base	ingredient
addition	ingredient

is minecraft:crafting decorated pot minecraft_simple_recipe_format

120

packet tags

play / toClient / packet_tags (0x78)

MC: ClientboundUpdateTagsPacket

Field Name Field Type Notes

tags length varint

tags

array

tagType	string
tags	tags

Type

packet set projectile power

play / toClient / packet_set_projectile_power

MC: ClientboundProjectilePowerPacket

Field Name	Field Type	Notes
id	varint
power	vec3f64

Type

packet

play / toClient / packet

Field Name Field Type Notes

name

varint enum

0	bundle delimiter
1	spawn entity
2	spawn entity experience orb
3	animation
4	statistics
5	acknowledge player digging
6	block break animation
7	tile entity data
8	block action
9	block change
10	boss bar
11	difficulty
12	chunk batch finished
13	chunk batch start
14	chunk biomes
15	clear titles
16	tab complete
17	declare commands
18	close window
19	window items
20	craft progress bar
21	set slot
22	cookie request
23	set cooldown
24	chat suggestions
25	custom payload
26	damage event
27	debug sample
28	hide message
29	kick disconnect
30	profileless chat
31	entity status
32	explosion
33	unload chunk
34	game state change
35	open horse window
36	hurt animation
37	initialize world border
38	keep alive
39	map chunk
40	world event
41	world particles
42	update light
43	login
44	map
45	trade list
46	rel entity move
47	entity move look
48	entity look
49	vehicle move
50	open book
51	open window
52	open sign entity
53	ping
54	ping response
55	craft recipe response
56	abilities
57	player chat
58	end combat event
59	enter combat event
60	death combat event
61	player remove
62	player info
63	face player
64	position
65	unlock recipes
66	entity destroy
67	remove entity effect
68	reset score
69	remove resource pack
70	add resource pack
71	respawn
72	entity head rotation
73	multi block change
74	select advancement tab
75	server data
76	action bar
77	world border center
78	world border lerp size
79	world border size
80	world border warning delay
81	world border warning reach
82	camera
83	held item slot
84	update view position
85	update view distance
86	spawn position
87	scoreboard display objective
88	entity metadata
89	attach entity
90	entity velocity
91	entity equipment
92	experience
93	update health
94	scoreboard objective
95	set passengers
96	teams
97	scoreboard score
98	simulation distance
99	set title subtitle
100	update time
101	set title text
102	set title time
103	entity sound effect
104	sound effect
105	start configuration
106	stop sound
107	store cookie
108	system chat
109	playerlist header
110	nbt query response
111	collect
112	entity teleport
113	set ticking state
114	step tick
115	transfer
116	advancements
117	entity update attributes
118	entity effect
119	declare recipes
120	tags

params

if name

is bundle delimiter	void
is spawn entity	packet_spawn_entity
is spawn entity experience orb	packet_spawn_entity_experience_orb
is animation	packet_animation
is statistics	packet_statistics
is acknowledge player digging	packet_acknowledge_player_digging
is block break animation	packet_block_break_animation
is tile entity data	packet_tile_entity_data
is block action	packet_block_action
is block change	packet_block_change
is boss bar	packet_boss_bar
is difficulty	packet_difficulty
is chunk batch finished	packet_chunk_batch_finished
is chunk batch start	packet_chunk_batch_start
is chunk biomes	packet_chunk_biomes
is clear titles	packet_clear_titles
is tab complete	packet_tab_complete
is declare commands	packet_declare_commands
is close window	packet_close_window
is window items	packet_window_items
is craft progress bar	packet_craft_progress_bar
is set slot	packet_set_slot
is cookie request	packet_common_cookie_request
is set cooldown	packet_set_cooldown
is chat suggestions	packet_chat_suggestions
is custom payload	packet_custom_payload
is damage event	packet_damage_event
is debug sample	packet_debug_sample
is hide message	packet_hide_message
is kick disconnect	packet_kick_disconnect
is profileless chat	packet_profileless_chat
is entity status	packet_entity_status
is explosion	packet_explosion
is unload chunk	packet_unload_chunk
is game state change	packet_game_state_change
is open horse window	packet_open_horse_window
is hurt animation	packet_hurt_animation
is initialize world border	packet_initialize_world_border
is keep alive	packet_keep_alive
is map chunk	packet_map_chunk
is world event	packet_world_event
is world particles	packet_world_particles
is update light	packet_update_light
is login	packet_login
is map	packet_map
is trade list	packet_trade_list
is rel entity move	packet_rel_entity_move
is entity move look	packet_entity_move_look
is entity look	packet_entity_look
is vehicle move	packet_vehicle_move
is open book	packet_open_book
is open window	packet_open_window
is open sign entity	packet_open_sign_entity
is ping	packet_ping
is ping response	packet_ping_response
is craft recipe response	packet_craft_recipe_response
is abilities	packet_abilities
is player chat	packet_player_chat
is end combat event	packet_end_combat_event
is enter combat event	packet_enter_combat_event
is death combat event	packet_death_combat_event
is player remove	packet_player_remove
is player info	packet_player_info
is face player	packet_face_player
is position	packet_position
is unlock recipes	packet_unlock_recipes
is entity destroy	packet_entity_destroy
is remove entity effect	packet_remove_entity_effect
is reset score	packet_reset_score
is remove resource pack	packet_remove_resource_pack
is add resource pack	packet_add_resource_pack
is respawn	packet_respawn
is entity head rotation	packet_entity_head_rotation
is multi block change	packet_multi_block_change
is select advancement tab	packet_select_advancement_tab
is server data	packet_server_data
is action bar	packet_action_bar
is world border center	packet_world_border_center
is world border lerp size	packet_world_border_lerp_size
is world border size	packet_world_border_size
is world border warning delay	packet_world_border_warning_delay
is world border warning reach	packet_world_border_warning_reach
is camera	packet_camera
is held item slot	packet_held_item_slot
is update view position	packet_update_view_position
is update view distance	packet_update_view_distance
is spawn position	packet_spawn_position
is scoreboard display objective	packet_scoreboard_display_objective
is entity metadata	packet_entity_metadata
is attach entity	packet_attach_entity
is entity velocity	packet_entity_velocity
is entity equipment	packet_entity_equipment
is experience	packet_experience
is update health	packet_update_health
is scoreboard objective	packet_scoreboard_objective
is set passengers	packet_set_passengers
is teams	packet_teams
is scoreboard score	packet_scoreboard_score
is simulation distance	packet_simulation_distance
is set title subtitle	packet_set_title_subtitle
is update time	packet_update_time
is set title text	packet_set_title_text
is set title time	packet_set_title_time
is entity sound effect	packet_entity_sound_effect
is sound effect	packet_sound_effect
is start configuration	packet_start_configuration
is stop sound	packet_stop_sound
is store cookie	packet_common_store_cookie
is system chat	packet_system_chat
is playerlist header	packet_playerlist_header
is nbt query response	packet_nbt_query_response
is collect	packet_collect
is entity teleport	packet_entity_teleport
is set ticking state	packet_set_ticking_state
is step tick	packet_step_tick
is transfer	packet_common_transfer
is advancements	packet_advancements
is entity update attributes	packet_entity_update_attributes
is entity effect	packet_entity_effect
is declare recipes	packet_declare_recipes
is tags	packet_tags

Key	Name
Type	packet_teleport_confirm
0x1	packet_query_block_nbt
0x2	packet_set_difficulty
0x3	packet_message_acknowledgement
0x4	packet_chat_command
0x5	packet_chat_command_signed
0x6	packet_chat_message
0x7	packet_chat_session_update
0x8	packet_chunk_batch_received
0x9	packet_client_command
0xa	packet_settings
0xb	packet_tab_complete
0xc	packet_configuration_acknowledged
0xd	packet_enchant_item
0xe	packet_window_click
0xf	packet_close_window
0x10	packet_set_slot_state
0x12	packet_custom_payload
Type	packet_debug_sample_subscription
0x14	packet_edit_book
0x15	packet_query_entity_nbt
0x16	packet_use_entity
0x17	packet_generate_structure
0x18	packet_keep_alive
0x19	packet_lock_difficulty
0x1a	packet_position
0x1b	packet_position_look
0x1c	packet_look
0x1d	packet_flying
0x1e	packet_vehicle_move
0x1f	packet_steer_boat
0x20	packet_pick_item
0x21	packet_ping_request
0x22	packet_craft_recipe_request
0x23	packet_abilities
0x24	packet_block_dig
0x25	packet_entity_action
0x26	packet_steer_vehicle
0x27	packet_pong
0x28	packet_recipe_book
0x29	packet_displayed_recipe
0x2a	packet_name_item
0x2b	packet_resource_pack_receive
0x2c	packet_advancement_tab
0x2d	packet_select_trade
0x2e	packet_set_beacon_effect
0x2f	packet_held_item_slot
0x30	packet_update_command_block
0x31	packet_update_command_block_minecart
0x32	packet_set_creative_slot
0x33	packet_update_jigsaw_block
0x34	packet_update_structure_block
0x35	packet_update_sign
0x36	packet_arm_animation
0x37	packet_spectate
0x38	packet_block_place
0x39	packet_use_item
Type	packet

packet teleport confirm

play / toServer / packet_teleport_confirm (0x00)

MC: ServerboundAcceptTeleportationPacket

Field Name	Field Type	Notes
teleportId	varint

packet query block nbt

play / toServer / packet_query_block_nbt (0x01)

MC: ServerboundBlockEntityTagQueryPacket

Field Name	Field Type	Notes
transactionId	varint
location	position

packet set difficulty

play / toServer / packet_set_difficulty (0x02)

MC: ServerboundChangeDifficultyPacket

Field Name	Field Type	Notes
newDifficulty	u8

packet message acknowledgement

play / toServer / packet_message_acknowledgement (0x03)

MC: ServerboundChatAckPacket

Field Name	Field Type	Notes
count	varint

packet chat command

play / toServer / packet_chat_command (0x04)

MC: ServerboundChatCommandPacket

Field Name	Field Type	Notes
command	string

packet chat command signed

play / toServer / packet_chat_command_signed (0x05)

MC: ServerboundChatCommandSignedPacket

Field Name Field Type Notes

command string

timestamp i64

salt i64

argumentSignatures length varint

argumentSignatures

array

argumentName string

messageCount varint

packet chat message

play / toServer / packet_chat_message (0x06)

MC: ServerboundChatPacket

Field Name	Field Type	Notes
message	string
timestamp	i64
salt	i64
offset	varint

packet chat session update

play / toServer / packet_chat_session_update (0x07)

MC: ServerboundChatSessionUpdatePacket

Field Name	Field Type	Notes
sessionUUID	UUID
expireTime	i64
publicKey	ByteArray
signature	ByteArray

packet chunk batch received

play / toServer / packet_chunk_batch_received (0x08)

MC: ServerboundChunkBatchReceivedPacket

Field Name	Field Type	Notes
chunksPerTick	f32

packet client command

play / toServer / packet_client_command (0x09)

MC: ServerboundClientCommandPacket

Field Name	Field Type	Notes
actionId	varint

packet settings

play / toServer / packet_settings (0x0a)

MC: ServerboundClientInformationPacket

Field Name	Field Type	Notes
locale	string
viewDistance	i8
chatFlags	varint
chatColors	bool
skinParts	u8
mainHand	varint
enableTextFiltering	bool
enableServerListing	bool

packet tab complete

play / toServer / packet_tab_complete (0x0b)

MC: ServerboundCommandSuggestionPacket

Field Name	Field Type	Notes
transactionId	varint
text	string

packet configuration acknowledged

play / toServer / packet_configuration_acknowledged (0x0c)

MC: ServerboundConfigurationAcknowledgedPacket

Field Name	Field Type	Notes

packet enchant item

play / toServer / packet_enchant_item (0x0d)

Empty MC: ServerboundContainerButtonClickPacket

Field Name	Field Type	Notes
windowId	i8
enchantment	i8

packet window click

play / toServer / packet_window_click (0x0e)

MC: ServerboundContainerClickPacket

Field Name Field Type Notes

windowId u8

stateId varint

slot i16

mouseButton i8

mode varint

changedSlots length varint

changedSlots

array

location	i16
item	Slot

cursorItem Slot

packet close window

play / toServer / packet_close_window (0x0f)

MC: ServerboundContainerClosePacket

Field Name	Field Type	Notes
windowId	u8

packet set slot state

play / toServer / packet_set_slot_state (0x10)

MC: ServerboundContainerSlotStateChangedPacket

Field Name	Field Type	Notes
slot id	varint
window id	varint
state	bool

packet custom payload

play / toServer / packet_custom_payload (0x12)

MC: ServerboundCustomPayloadPacket

Field Name	Field Type	Notes
channel	string
data	restBuffer

Type

packet debug sample subscription

play / toServer / packet_debug_sample_subscription

MC: ServerboundDebugSampleSubscriptionPacket

Field Name	Field Type	Notes
type	varint

packet edit book

play / toServer / packet_edit_book (0x14)

MC: ServerboundEditBookPacket

Field Name	Field Type	Notes
hand	varint
pages length	varint
pages array	string
title optional	string

packet query entity nbt

play / toServer / packet_query_entity_nbt (0x15)

MC: ServerboundEntityTagQuery

Field Name	Field Type	Notes
transactionId	varint
entityId	varint

packet use entity

play / toServer / packet_use_entity (0x16)

MC: ServerboundInteractPacket

Field Name Field Type Notes

target varint

mouse varint

x

if mouse

is 2	f32
default	void

y

if mouse

is 2	f32
default	void

z

if mouse

is 2	f32
default	void

hand

if mouse

is 0	varint
is 2	varint
default	void

sneaking bool

packet generate structure

play / toServer / packet_generate_structure (0x17)

MC: ServerboundJigsawGeneratePacket

Field Name	Field Type	Notes
location	position
levels	varint
keepJigsaws	bool

packet keep alive

play / toServer / packet_keep_alive (0x18)

MC: ServerboundKeepAlivePacket

Field Name	Field Type	Notes
keepAliveId	i64

packet lock difficulty

play / toServer / packet_lock_difficulty (0x19)

MC: ServerboundLockDifficultyPacket

Field Name	Field Type	Notes
locked	bool

packet position

play / toServer / packet_position (0x1a)

MC: ServerboundMovePlayerPacket.Pos

Field Name	Field Type	Notes
x	f64
y	f64
z	f64
onGround	bool

packet position look

play / toServer / packet_position_look (0x1b)

MC: ServerboundMovePlayerPacket.PosRot

Field Name	Field Type	Notes
x	f64
y	f64
z	f64
yaw	f32
pitch	f32
onGround	bool

packet look

play / toServer / packet_look (0x1c)

MC: ServerboundMovePlayerPacket.Rot

Field Name	Field Type	Notes
yaw	f32
pitch	f32
onGround	bool

packet flying

play / toServer / packet_flying (0x1d)

MC: ServerboundMovePlayerPacket.StatusOnly

Field Name	Field Type	Notes
onGround	bool

packet vehicle move

play / toServer / packet_vehicle_move (0x1e)

MC: ServerboundMoveVehiclePacket

Field Name	Field Type	Notes
x	f64
y	f64
z	f64
yaw	f32
pitch	f32

packet steer boat

play / toServer / packet_steer_boat (0x1f)

MC: ServerboundPaddleBoatPacket

Field Name	Field Type	Notes
leftPaddle	bool
rightPaddle	bool

packet pick item

play / toServer / packet_pick_item (0x20)

MC: ServerboundPickItemPacket

Field Name	Field Type	Notes
slot	varint

packet ping request

play / toServer / packet_ping_request (0x21)

MC: ServerboundPingRequestPacket

Field Name	Field Type	Notes
id	i64

packet craft recipe request

play / toServer / packet_craft_recipe_request (0x22)

MC: ServerboundPlaceRecipePacket

Field Name	Field Type	Notes
windowId	i8
recipe	string
makeAll	bool

packet abilities

play / toServer / packet_abilities (0x23)

MC: ServerboundPlayerAbilitiesPacket

Field Name	Field Type	Notes
flags	i8

packet block dig

play / toServer / packet_block_dig (0x24)

MC: ServerboundPlayerActionPacket

Field Name	Field Type	Notes
status	varint
location	position
face	i8
sequence	varint

packet entity action

play / toServer / packet_entity_action (0x25)

MC: ServerboundPlayerCommandPacket

Field Name	Field Type	Notes
entityId	varint
actionId	varint
jumpBoost	varint

packet steer vehicle

play / toServer / packet_steer_vehicle (0x26)

MC: ServerboundPlayerInputPacket

Field Name	Field Type	Notes
sideways	f32
forward	f32
jump	u8

packet pong

play / toServer / packet_pong (0x27)

MC: ServerboundPongPacket

Field Name	Field Type	Notes
id	i32

packet recipe book

play / toServer / packet_recipe_book (0x28)

MC: ServerboundRecipeBookChangeSettingsPacket

Field Name	Field Type	Notes
bookId	varint
bookOpen	bool
filterActive	bool

packet displayed recipe

play / toServer / packet_displayed_recipe (0x29)

MC: ServerboundRecipeBookSeenRecipePacket

Field Name	Field Type	Notes
recipeId	string

packet name item

play / toServer / packet_name_item (0x2a)

MC: ServerboundRenameItemPacket

Field Name	Field Type	Notes
name	string

packet resource pack receive

play / toServer / packet_resource_pack_receive (0x2b)

MC: ServerboundResourcePackPacket

Field Name	Field Type	Notes
uuid	UUID
result	varint

packet advancement tab

play / toServer / packet_advancement_tab (0x2c)

MC: ServerboundSeenAdvancementsPacket

Field Name Field Type Notes

action varint

tabId

if action

is 0	string
is 1	void

packet select trade

play / toServer / packet_select_trade (0x2d)

MC: ServerboundSelectTradePacket

Field Name	Field Type	Notes
slot	varint

packet set beacon effect

play / toServer / packet_set_beacon_effect (0x2e)

MC: ServerboundSetBeaconPacket

Field Name	Field Type	Notes
primary effect optional	varint
secondary effect optional	varint

packet held item slot

play / toServer / packet_held_item_slot (0x2f)

MC: ServerboundSetCarriedItemPacket

Field Name	Field Type	Notes
slotId	i16

packet update command block

play / toServer / packet_update_command_block (0x30)

MC: ServerboundSetCommandBlockPacket

Field Name	Field Type	Notes
location	position
command	string
mode	varint
flags	u8

packet update command block minecart

play / toServer / packet_update_command_block_minecart (0x31)

MC: ServerboundSetCommandMinecartPacket

Field Name	Field Type	Notes
entityId	varint
command	string
track output	bool

packet set creative slot

play / toServer / packet_set_creative_slot (0x32)

MC: ServerboundSetCreativeModeSlotPacket

Field Name	Field Type	Notes
slot	i16
item	Slot

packet update jigsaw block

play / toServer / packet_update_jigsaw_block (0x33)

MC: ServerboundSetJigsawBlockPacket

Field Name	Field Type	Notes
location	position
name	string
target	string
pool	string
finalState	string
jointType	string
selection priority	varint
placement priority	varint

packet update structure block

play / toServer / packet_update_structure_block (0x34)

MC: ServerboundSetStructureBlockPacket

Field Name	Field Type	Notes
location	position
action	varint
mode	varint
name	string
offset x	i8
offset y	i8
offset z	i8
size x	i8
size y	i8
size z	i8
mirror	varint
rotation	varint
metadata	string
integrity	f32
seed	varint
flags	u8

packet update sign

play / toServer / packet_update_sign (0x35)

MC: ServerboundSignUpdatePacket

Field Name	Field Type	Notes
location	position
isFrontText	bool
text1	string
text2	string
text3	string
text4	string

packet arm animation

play / toServer / packet_arm_animation (0x36)

MC: ServerboundSwingPacket

Field Name	Field Type	Notes
hand	varint

packet spectate

play / toServer / packet_spectate (0x37)

MC: ServerboundTeleportToEntityPacket

Field Name	Field Type	Notes
target	UUID

packet block place

play / toServer / packet_block_place (0x38)

MC: ServerboundUseItemOnPacket

Field Name	Field Type	Notes
hand	varint
location	position
direction	varint
cursorX	f32
cursorY	f32
cursorZ	f32
insideBlock	bool
sequence	varint

packet use item

play / toServer / packet_use_item (0x39)

MC: ServerboundUseItemPacket

Field Name	Field Type	Notes
hand	varint
sequence	varint

Type

packet

play / toServer / packet

Field Name Field Type Notes

name

varint enum

0	teleport confirm
1	query block nbt
2	set difficulty
3	message acknowledgement
4	chat command
5	chat command signed
6	chat message
7	chat session update
8	chunk batch received
9	client command
10	settings
11	tab complete
12	configuration acknowledged
13	enchant item
14	window click
15	close window
16	set slot state
17	cookie response
18	custom payload
19	debug sample subscription
20	edit book
21	query entity nbt
22	use entity
23	generate structure
24	keep alive
25	lock difficulty
26	position
27	position look
28	look
29	flying
30	vehicle move
31	steer boat
32	pick item
33	ping request
34	craft recipe request
35	abilities
36	block dig
37	entity action
38	steer vehicle
39	pong
40	recipe book
41	displayed recipe
42	name item
43	resource pack receive
44	advancement tab
45	select trade
46	set beacon effect
47	held item slot
48	update command block
49	update command block minecart
50	set creative slot
51	update jigsaw block
52	update structure block
53	update sign
54	arm animation
55	spectate
56	block place
57	use item

params

if name

is teleport confirm	packet_teleport_confirm
is query block nbt	packet_query_block_nbt
is set difficulty	packet_set_difficulty
is message acknowledgement	packet_message_acknowledgement
is chat command	packet_chat_command
is chat command signed	packet_chat_command_signed
is chat message	packet_chat_message
is chat session update	packet_chat_session_update
is chunk batch received	packet_chunk_batch_received
is client command	packet_client_command
is settings	packet_settings
is tab complete	packet_tab_complete
is configuration acknowledged	packet_configuration_acknowledged
is enchant item	packet_enchant_item
is window click	packet_window_click
is close window	packet_close_window
is set slot state	packet_set_slot_state
is cookie response	packet_common_cookie_response
is custom payload	packet_custom_payload
is edit book	packet_edit_book
is query entity nbt	packet_query_entity_nbt
is use entity	packet_use_entity
is generate structure	packet_generate_structure
is keep alive	packet_keep_alive
is lock difficulty	packet_lock_difficulty
is position	packet_position
is position look	packet_position_look
is look	packet_look
is flying	packet_flying
is vehicle move	packet_vehicle_move
is steer boat	packet_steer_boat
is pick item	packet_pick_item
is ping request	packet_ping_request
is craft recipe request	packet_craft_recipe_request
is abilities	packet_abilities
is block dig	packet_block_dig
is entity action	packet_entity_action
is steer vehicle	packet_steer_vehicle
is pong	packet_pong
is recipe book	packet_recipe_book
is displayed recipe	packet_displayed_recipe
is name item	packet_name_item
is resource pack receive	packet_resource_pack_receive
is advancement tab	packet_advancement_tab
is select trade	packet_select_trade
is set beacon effect	packet_set_beacon_effect
is held item slot	packet_held_item_slot
is update command block	packet_update_command_block
is update command block minecart	packet_update_command_block_minecart
is set creative slot	packet_set_creative_slot
is update jigsaw block	packet_update_jigsaw_block
is update structure block	packet_update_structure_block
is update sign	packet_update_sign
is arm animation	packet_arm_animation
is spectate	packet_spectate
is block place	packet_block_place
is use item	packet_use_item

Table of Contents

Shared Packets

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents