Packet ID	Purpose	Notes
1	Login	Sent once from client to server at login.
2	Play Status	Used after the Server handles a Login or (Sub)Client Authentication Packet.
3	Server -> Client Handshake	Sent from the server at the end of the login packet.
4	Client -> Server Handshake	Sets up encryption and authenticates in educational version once at level startup from client.
5	Disconnect Player	Sent from server. It is not fired if you are in a singleplayer game and you leave, but it is fired when there are split-screen clients.
6	Resource Packs Info
7	Resource Pack Stack	This is sent to the client in response to a ResourcePackClientResponsePacket which is fired when MinecraftGame starts.
8	Resource Pack Client Response	Sent to MinecraftGame to complete the resource pack loading process.
9	Text Message	Used for commands, messages, and other info printed to the screen. Most of which are server->client or server broadcasted to all clients,
10	Set Time	Every so often (and at login) the server sends the current time to the client, and additionally the client can set the server time through 2 commands: DayLockCommand and TimeCommand
11	StartGamePacket	Sent from the server to client when the game is starting (or client joins), gives ids and current tick.
12	Add Player	A new player joins the game; the server sends this packet to the *other* players.
13	Add Actor (a.k.a. Entity)	Newly created entities on server use AddActorPacket to notify clients that they exist.
14	Remove Actor	Occasionally, during the server player tick some time is taken to remove nearby actors from the world.
15	Add Item Actor	When an item actor is added to the world (punch a tree->tree block, for example)
16	ServerPlayerPostMovePositionPacket	Used to send a player's server position to the respective client at the end of movement.
17	Take Item Actor	A packet sent to the server when deal with picking up an item off the ground in the world.
18	Move Actor Absolute	This comes from SpatialActorNetworkData when there is a flag set to force abs position, this only occurs when a player is controlling another mob.
19	Move Player	This is the packet that keeps track of position, rotation, head rotation, if the actor is on ground, and if it is riding something.
20	PassengerJumpPacket
21	Update Block	Occasional packets sent from server when blocks update or are ticked. (For example, when digging.)
22	Add Painting	Sends the information for a new painting actor from server to client.
24	LevelSoundEventPacketV1
25	Level Event	Splash Potions, weather events, global pause, simlock commands, oh my!
26	Block Event	Whenever a block event happens it is sent from the server to sync client and server, with arbitrarily encoded information in b0 and b1.
27	Actor Event	All kinds of actor state changes (see Actor::handleEntityEvent) ranging from a crossbow being ready to fire to taming animals... ,
28	Mob Effect	At the start of the game the server sends any mob effects with _sendAdditionalLevelData() if the joining player saved out with them,
29	Update Attributes	Occasionally updating player attributes (buffs/debuffs, health, etc)
30	Inventory Transaction
31	Mob Equipment	A bunch of things use this both server to client and can still be sent from the client if LocalPlayer's inventory doesn't match the inventory sent (deprecated pattern).
32	Mob Armor Equipment	This is related to MobEquipmentPackets, but armor specifically and passes ALL equipment changes at once instead of one slot at a time.
33	Interact	Used for inventory button press and in _updateInteraction() for a variety of purposes.
34	Block Pick Request	Player picks up a block in the world; client to server.
35	Actor Pick Request	Player clicks on an actor in the world, eg a chicken.
36	Player Action	Sent from the client whenever the player performs an action (dashing, undashing, use an item, mine/hit, use a block, etc).
38	Hurt Armor	Sends the damage taken after armor is taken into account. This looks like it is trying to be phased out, this is not sent while the ItemStackNetManagerServer is active.
39	Set Actor Data	Regular Actor Data delta packets, sent from the level on tick, mob and actor during normal tick
40	Set Actor Motion	This is technically sent by both server and client, but only the client is receiving any packets.
41	Set Actor Link	Sent by both client and server, only received by LegacyClientHandler.
42	Set Health	This packet is sent to the client when the player is spawned in and when they respawn.
43	Set Spawn Position	When a player logs in or the SetWorldSpawnCommand is used this is sent from the server to the client.
44	Animate Actor	Used when critting and megacritting and apparently swinging swords.
45	Respawn	Sent as a handshake between the client and server to respawn the player. For some reason each respawn 1 packet is sent from the client
46	Container Open	Sent from the server so that the client knows to open the container screen and do the chest opening animation.
47	Container Close	After the game deletes the container manager on the client, the client sends this packet.
48	Player Hotbar	Sent from the server when the player uses pick block on actors or blocks, in addition to the player uses the clear, give,
49	Inventory Content	This is used for updating an entire container. Example uses include: player respawned, replace items command, 3rd party content calls sendInventory(), block picking.
50	Inventory Slot	Updates one slot in an inventory rather than the whole thing. So like animal inventory (horses, donkeys, etc) and chests.
51	Container Set Data	This is sent from the server basically any time that the "cooking" state of the brewing stand or the furnace changes (i.e. the loading bar)
52	Crafting Data	Sent from the server on level startup to send all recipes to the client. As of this writing it's a ~150k packet.
54	Gui Data Pick Item	The server telling the client what item slot to hover over in the hotbar, this is only used when players use pick block,
56	Block Actor Data	Sends the entire user data compound tag and the block position to the client.
57	Player Input
58	Level Chunk Packet	Used to start a chunk transaction.Used to start a Chunk Transaction - sends a list of hashes for the chunks it needs to send, followed by border blocks, block entities, and biomes.
59	Set Commands Enabled	This is used by the world settings screen, cheats, EDU builds for teachers, and various other places to enable cheats/commands
60	Set Difficulty	Used for when a client changes difficulty through the menu or when the server changes the difficulty.
61	Change Dimension	The server sends this packet from the level to kick off dimension changing process.
62	Set Player Game Type	The client handles the change of the UI element (the gametype dropdown, although this can be avoided by changing via command or on the server),
63	Player List	Sent from the Server at the start of the game or when a player is added (or if the game does a clean up of disconnected players)
64	Simple Event	This packet is used for enabling/disabling commands and for unlocking world template settings
65	Telemetry Event	This is a legacy packet and should not be used anymore, although server side telemetry is not widely used/tested yet.
66	Spawn Experience Orb	DEPRECATED
67	ClientboundMapItemDataPacket	This is sent either if the user is creating a new map, if a map that exists cannot be found, or if the user is creating a locked copy of a map.
68	MapInfoRequestPacket	In the case of the client being unable to find map data for a map item it sends a uuid for a map to the server.
69	Request Chunk Radius	The client can't just change the view radius without the server's approval, otherwise there could be holes on unrendered area.
70	Chunk Radius Updated	Sent when the world is loading. We don't know why it is sent four times. Defines the tick distance.
72	Game Rules Changed	Sent from server whenever any combination of gamerules is changed. the underlying data is a vector of GameRules
73	Camera	Used only in EDU through the tripod camera item or the TakePictureCommand. Sends the camera actor id and the target player id from the server.
74	Boss Event	Two-way packet.
75	Show Credits	Starts on server when the credits screen should pop up. That packet is sent to the client.
76	Available Commands	This very large packet (>10k) sends the available slash commands as part of the login process.
77	Command Request	"slash" command execution, client to server.
78	Command Block Update	Sent when you close the command block screen on the client
79	Command Output	"slash" command execution, server to client.
80	UpdateTradePacket	This is used when the player trades with an npc. This sends all of the updated trade info in one big ol' packet.
81	Update Equip	Seemingly only used for the Horse Inventory... More specifically when the player opens the horse inventory.
82	Resource Pack Data Info	Sent from the serverFileChunkUploader during the initialization of the file uploader. This packet is sent to the primary client.
83	ResourcePackChunkDataPacket
84	ResourcePackChunkRequestPacket
85	Transfer Player	Used to kick off transferring the client between online games, or it can be used to cause players to quit the world and rejoin.
86	Play Sound	This packet is only used via command or script event. This is for 3rd party content.
87	Stop Sound	Allows you to stop a sound or all sounds on all clients, only used in a /command
88	Set Title	Used by 3rd party content for the purpose of showing ui banners. There are 2 commands associated with it: title and titleraw.
89	Add Behavior Tree	For automation.
90	Structure Block Update	After the client makes changes in the Structure Block Screen we tell the server to update based off of that. This only sent when you close the UI.
91	Show Store Offer	Where we wnat the client to redirect the user. The server can redirect the user to a 3rd party server page (if said server
92	Purchase Receipt	Sent from client to serverSent from the client after we make a purchase in the store OR if we login and our entitlements are verified.
93	Player Skin	This packet is used for when the player changes the skin they are using (in game or out of game).
94	Sub Client Login	This packet starts the login process of subclients (splitscreen)
95	Initiates websocket connection.	Only used though command to connect to server URLs. This is primarily used by EDU for connecting to their companion apps
96	Set Last Hurt By	Any time a player is hit, the id of the last mob that attacked them is sent to the client
97	Book Edit	Sends the updated state of the book and quill item from client to server during use, i.e. before you sign it, making it uneditible.
98	NPC Request	Used for a number of interactions with the NPC Component.
99	Photo Transfer	There is a camera item in EDU and they can use it to take screenshots and add them to a scrapbook.
100	Modal Form Request	Not sent from vanilla. The feature is meant for third-party servers to be able to drive dynamic ui forms.
101	Modal Form Response	Fired in response to third party server request to show the custom UI screen.
102	Server Settings Request	Sent during the initialization of world settings on the client. It is also an empty packet. There is no handler for this packet, should be removed.
103	Server Settings Response
104	Show Profile	The only use in vanilla is a test command called ProfileCommand. It makes the user's xbox profile popup.
105	Set Default Game Type	Same as SetPlayerGameTypePacket & UpdatePlayerGameTypePacket, the only difference is that this changes the default for all clients
106	Remove Objective	Using the scoreboard command, users can remove objectives that are tracked on the scoreboard. This is just the name of the objective.
107	Set Display Objective	Sent from the server for 3rd party content to display current objectives and status
108	Set Score	This packet is used to set the scoreboard which is used for 3rd party content.
109	Lab Table	For the EDU Chemistry Lab Table block actor. The packet can be fired from the client through the UI or from the server during updates.
110	Update Block Synced	Used to sync moving blocks with clients so they render correctlyVariation of UpdateBlockPacket that includes information to sync entities with renderchunk generation.
111	Move Actor Delta	This packet is all the deltas of actors position, rotation, and head rotation. This is used for all actors.
112	Set Scoreboard Identity	Send an update packet for a player identity definition iff a tracked player has logged in with a different display name.
113	Set Local Player As Initialized	Client tells the server that the client is ready to roll.
114	Update Soft Enum	This is used for the scoreboard and tag systems (overwhelmingly used by 3rd party content);
115	Ping Packet	DEPRECATED. Was for testing / debug / telemetryFor testing / debug / telemetry:
118	SpawnParticleEffectPacket	This is not used for much anymore, only the Particle command (spawn particle by name at a location) and for
119	Available Actor Identifiers	On world start, send clients the info for all available actors.Sends the whole list of actor identifiers at game start from the server.
120	LevelSoundEventPacketV2
121	Network Chunk Publisher Update	Tells clients to update the chunk view for the local player.Used (from the server) when a user's Chunk View moves, I.e. the area that determines what chunks exist
122	Biome Definition List	On world start, send clients the info for all available biomes.Sends the whole list of the biomes from server to the client at the start of the game from _sendLevelData()
123	Level Sound Event	With support for custom entities. Entity Id is a string and Event Id is an integer.
124	LevelEventGenericPacket
125	LecternUpdatePacket	This is used for the Lectern Block Actor. It is a request from the client to either turn the page in the lectern or drop the book.
129	Client Cache Status Packet	It is sent by the Client once, at login, to communicate if it supports the cache or not.Sent by the Client once, at login, to communicate if it supports the client blob cache protocol or not.
130	On-Screen Texture Animation	Sent from the player (and in one case from the village) to make those really cool animated effects for the hero of the village
131	Create Locked Map	Ask server to create a locked map.This is fired when the user locks a map item utilizing the Cartography Table in game.
132	Structure Data Request	Used to request structure information from a server.How we want to get our structure: by capturing what is live in the world,
133	Structure Data Response	Used to reply to a request for structure information.This is used in exporting from load, exporting from save, and querying saved structures from structure blocks.
135	Client Cache Blob Status Packet	Sent periodically by the client to update the server on which blob it has (ACK) and which blobs it is lacking (MISS).Indicates status of binary blob transfers from server. Used heavily when server is sending chunks.
136	Client Cache Miss Response Packet	Any missing blob should just be thrown into one of these packet ASAP and sent.Only active in a *real* client-server scenario. This packet is just a list of pairs sent from server to client.
137	Education Settings Packet	Transmits EducationLevelSettings to all clients.Currently transmits EducationLevelSettings to all clients when the game is starting.
138	Emote Packet	A client sends this to the server to notify other clients about the emote.Sent in both directions; by client to request that an emote is played and then from the server to the clients
139	Multiplayer Settings Packet	EDU: Syncs multiplayer settingsThis is used by EDU for joining players and removing players from your session,
140	Settings Command Packet	Requests a setting to be changed through commands.Used when the player changes the world settings like doDayNightCycle or WeatherCycle via the world settings menu
141	Anvil Damage Packet	Requests an anvil to be damaged.Sends the current damage the anvil has taken per use from client.
142	Completed Using Item	Send server to client to complete the using item process. An example is when you finish drinking or eating.
143	NetworkSettingsPacket	Sends tunable options from host to client (compression threshold and algorithm)
144	Player Auth Input	Added for Server Authoritative Movement to sync all player input with the server.Server Authoritative Movement
145	CreativeContentPacket	Sent once by the server on startup to tell clients all of the items that can show up in the creative menu, blocks and items.
146	PlayerEnchantOptionsPacket	This packet is sent from the server whenever a player rerolls a new set of enchantment options from the enchantment table
147	ItemStackRequestPacket	The new server auth inventory item transaction request. This is done in batches of items, and is as of Dec 2019
148	ItemStackResponsePacket	The new server auth inventory item transaction response, sent from the server.
149	PlayerArmorDamagePacket	Sent from server whenever the player's armor takes damage. This packet sends all armor data at once.
150	CodeBuilderPacket	This is EDU exclusively. It is sent once from _sendLevelData() in the start of a game from the server, and once per CodeBuilderCommand
151	UpdatePlayerGameTypePacket
152	EmoteListPacket	Allows clients to download emotes that other clients have equipped.
153	PositionTrackingDBServerBroadcastPacket	Server to client packet for server authoratative runtime database (with persistent LevelStorage backup) designed primarily to track lodestone stuff. See Position Tracking DB Notes.md in bedrock-docs.
154	PositionTrackingDBClientRequestPacket	Client to server packet for server authoratative runtime database (with persistent LevelStorage backup) designed primarily to track lodestone stuff. See Position Tracking DB Notes.md in bedrock-docs.
155	DebugInfoPacket	The system sends debug information via a generic network packet. This enables rendering of any server information on the client in for instance ImGui.
156	PacketViolationWarningPacket	This is sent when the client detects a malformed packet.
157	MotionPredictionHintsPacket	This is from the server when spatial optimizations are enabled and the server does not send a spatial update. It is
158	AnimateEntityPacket	The AnimateEntityPacket is used to trigger a one-off animation on the client it is sent to.
159	CameraShakePacket	The CameraShakePacket is used to control trigger camera shake movements on the client's player camera.
160	PlayerFogPacket	This is the packet that tracks the active fog stack from the server so the local players can apply different fog settings.
161	CorrectPlayerMovePredictionPacket	Sent to a player when their simulation of movement mismatches enough from the server that it wants to correct the client.
162	ItemComponentPacket	Definitions for component items. Should be fine to send one with an empty mItems array after the StartGamePacket.
164	ClientboundDebugRendererPacket	Sent from the server to client to add/remove debug rendering objects
165	SyncActorPropertyPacket	Allows us to synchronize Actor properties across the network.
166	AddVolumeEntityPacket	Sends a volume entity's definition and components from server to client.
167	RemoveVolumeEntityPacket	Sends a volume entity to be removed from server to client.
168	SimulationTypePacket	Sent from the server to the client when setting the simulation type for toolbox mode. (Not yet suported)
169	NpcDialoguePacket	Sent from the server to client when remote firing an NPC dialogue window for a client.
170	EduUriResourcePacket	Transmits Edu Shared Uri Resource settings to all clients.
171	CreatePhotoPacket	Players now have the possibility to export photos from their portfolios into photo items in their inventory. EDU.
172	UpdateSubChunkBlocksPacket	Packet sent for every set of blocks changed in a sub chunk every tick.
174	SubChunkPacket	Sent from server to client representing a batch of subchunk data and the required information to place the subchunk in the correct part of the world
175	SubChunkRequestPacket	Sent from the client to the server representing a batch of subchunks that the client requests from the server
176	PlayerStartItemCooldownPacket	Packet sent by the player to start the cooldown on an item.
177	ScriptMessagePacket	Used to send custom messages between client and server.
178	CodeBuilderSourcePacket	This is EDU exclusive, used in getInterface() of WebviewSystem.
179	TickingAreasLoadStatusPacket	Used to inform the client that the server is waiting for ticking areas to finish preloading.
180	DimensionDataPacket	brief packet containing data-driven dimension properties
181	AgentActionEventPacket	packet containing data of Agent Action Type
182	ChangeMobPropertyPacket	packet containing data for changing mob property
183	LessonProgressPacket	Lesson Progress
184	RequestAbilityPacket	Sent from client to server. Used to request an ability change.
185	RequestPermissionsPacket	Sent from client to server. Used to request a new Permissions Levels. Can only be used by Operators or Hosts.
186	ToastRequestPacket	Pushes a UI toast message to be displayed by the client
187	UpdateAbilitiesPacket	Sent by the server to update the state of a player's Abilities.
188	UpdateAdventureSettingsPacket	Sent by the server to update the state of AdventureSettings. Replaces the AdventureSettingsPacket for updating AdventureSettings from server to client.
189	DeathInfoPacket	Sent from the server to client when player dies (Level::onPlayerDeath).
190	EditorNetworkPacket	General use Editor specific packet - carries a payload of whatever serialized
191	FeatureRegistryPacket	This is the packet that tracks the active feature registry data from the server so that client can place the features themselves.
192	ServerStatsPacket	Used to send performance and other valuable stats back to the client
193	RequestNetworkSettingsPacket	requests tunable options from host to client (compression threshold and algorithm)
194	GameTestRequestPacket	Internal Text Packet
195	GameTestResultsPacket	Internal Text Packet
196	UpdateClientInputLocksPacket	Used to update the players input permissions. Sends the full permission set and the server position of the player at the time the permission was modified.
198	CameraPresetsPacket	Used to sync CameraPresets data from server to clients.
199	UnlockedRecipesPacket	Sent from server to client, for all previously unlocked recipes on load and
300	CameraInstructionPacket	Used to send a CameraInstruction from the server to the specified clients.
301	CompressedBiomeDefinitionList
302	TrimDataPacket	Sent from the server on level startup to send all trim patterns to the client.
303	OpenSignPacket	Sent from the server so that the client knows to open the sign screen.
304	AgentAnimationPacket	Broadcasted to other players when an Agent performs an animation so it gets properly replicated
305	RefreshEntitlementsPacket
306	PlayerToggleCrafterSlotRequestPacket
307	SetPlayerInventoryOptionsPacket
308	SetHudPacket	This packet is only used via the set hud command. This is for 3rd party content.
309	AwardAchievementPacket
310	ClientboundCloseFormPacket	Sent from the server to client to force close all server forms on the stack and return to the HUD screen.
312	ServerboundLoadingScreenPacket	Sent from the client to the server to message to the server about the state of the loading screen.
313	Jigsaw Structure data used by client jigsaw structure worldgen	This packet contains a copy of the behavior pack jigsaw structure rulesSends the serialized jigsaw rule JSON to the client as it's needed on both the client and server.
314	Informs the client of which Structure Feature they are currently occupying.	If the player is not in a structure, this packet contains an empty string.Sends the name of the Structure Feature the player is currently occupying to the client.
315	ServerboundDiagnosticsPacket	Sent from the client to the server IF ProfilerLite is enabled AND the creator toggle for
316	CameraAimAssistPacket	CameraAimAssist
317	Cleanup of Dynamic Container Registry	This is used to trigger a clientside cleanup of the dynamic container registry. Whenever the serverside