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Version 2026.01.17 4b0f30090 interface_

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github-actions[bot] edited this page Jan 17, 2026 · 1 revision

Interface Packets

Version: 2026.01.17-4b0f30090

This category contains 23 packet(s).

Packet Index

ID Name Compressed Max Size
0xD2 ServerMessage No 1.7 GB
0xD3 ChatMessage No 16.4 MB
0xD4 Notification No 1.7 GB
0xD5 KillFeedMessage No 1.7 GB
0xD6 ShowEventTitle No 1.7 GB
0xD7 HideEventTitle No 4 bytes
0xD8 SetPage No 2 bytes
0xD9 CustomHud Yes 1.7 GB
0xDA CustomPage Yes 1.7 GB
0xDB CustomPageEvent No 16.4 MB
0xDE EditorBlocksChange Yes 139.3 MB
0xDF ServerInfo No 32.8 MB
0xE0 AddToServerPlayerList No 1.7 GB
0xE1 RemoveFromServerPlayerList No 65.5 MB
0xE2 UpdateServerPlayerList No 131.1 MB
0xE3 UpdateServerPlayerListPing No 81.9 MB
0xE4 UpdateKnownRecipes No 1.7 GB
0xE5 UpdatePortal No 16.4 MB
0xE6 UpdateVisibleHudComponents No 4.1 MB
0xE7 ResetUserInterfaceState No 0 bytes
0xE8 UpdateLanguage No 16.4 MB
0xE9 WorldSavingStatus No 1 bytes
0xEA OpenChatWithCommand No 16.4 MB

ServerMessage

Property Value
Packet ID 0xD2 (210)
Compressed No
Fixed Block Size 2 bytes
Variable Field Count 1
Max Size 1.7 GB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
type ChatType No -
message FormattedMessage Yes -

type enum values:

  • 0 = Chat

ChatMessage

Property Value
Packet ID 0xD3 (211)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 16.4 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
message String Yes 4096000

Notification

Property Value
Packet ID 0xD4 (212)
Compressed No
Fixed Block Size 2 bytes
Variable Field Count 4
Max Size 1.7 GB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
message FormattedMessage Yes -
secondaryMessage FormattedMessage Yes -
icon String Yes 4096000
item ItemWithAllMetadata Yes -
style NotificationStyle No -

style enum values:

  • 0 = Default
  • 1 = Danger
  • 2 = Warning
  • 3 = Success

KillFeedMessage

Property Value
Packet ID 0xD5 (213)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 3
Max Size 1.7 GB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
killer FormattedMessage Yes -
decedent FormattedMessage Yes -
icon String Yes 4096000

ShowEventTitle

Property Value
Packet ID 0xD6 (214)
Compressed No
Fixed Block Size 14 bytes
Variable Field Count 3
Max Size 1.7 GB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
fadeInDuration float No -
fadeOutDuration float No -
duration float No -
icon String Yes 4096000
isMajor boolean No -
primaryTitle FormattedMessage Yes -
secondaryTitle FormattedMessage Yes -

HideEventTitle

Property Value
Packet ID 0xD7 (215)
Compressed No
Fixed Block Size 4 bytes
Variable Field Count 0
Max Size 4 bytes

Fields

Name Type Nullable Max Length
fadeOutDuration float No -

SetPage

Property Value
Packet ID 0xD8 (216)
Compressed No
Fixed Block Size 2 bytes
Variable Field Count 0
Max Size 2 bytes

Fields

Name Type Nullable Max Length
page Page No -
canCloseThroughInteraction boolean No -

page enum values:

  • 0 = None
  • 1 = Bench
  • 2 = Inventory
  • 3 = ToolsSettings
  • 4 = Map
  • 5 = MachinimaEditor
  • 6 = ContentCreation
  • 7 = Custom

CustomHud

Property Value
Packet ID 0xD9 (217)
Compressed Yes
Fixed Block Size 2 bytes
Variable Field Count 1
Max Size 1.7 GB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
clear boolean No -
commands CustomUICommand[] Yes 4096000

CustomPage

Property Value
Packet ID 0xDA (218)
Compressed Yes
Fixed Block Size 4 bytes
Variable Field Count 3
Max Size 1.7 GB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
key String Yes 4096000
isInitial boolean No -
clear boolean No -
lifetime CustomPageLifetime No -
commands CustomUICommand[] Yes 4096000
eventBindings CustomUIEventBinding[] Yes 4096000

lifetime enum values:

  • 0 = CantClose
  • 1 = CanDismiss
  • 2 = CanDismissOrCloseThroughInteraction

CustomPageEvent

Property Value
Packet ID 0xDB (219)
Compressed No
Fixed Block Size 2 bytes
Variable Field Count 1
Max Size 16.4 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
type CustomPageEventType No -
data String Yes 4096000

type enum values:

  • 0 = Acknowledge
  • 1 = Data
  • 2 = Dismiss

EditorBlocksChange

Property Value
Packet ID 0xDE (222)
Compressed Yes
Fixed Block Size 30 bytes
Variable Field Count 2
Max Size 139.3 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
selection EditorSelection Yes -
blocksChange BlockChange[] Yes 4096000
fluidsChange FluidChange[] Yes 4096000
blocksCount int No -
advancedPreview boolean No -

ServerInfo

Property Value
Packet ID 0xDF (223)
Compressed No
Fixed Block Size 5 bytes
Variable Field Count 2
Max Size 32.8 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
serverName String Yes 4096000
motd String Yes 4096000
maxPlayers int No -

AddToServerPlayerList

Property Value
Packet ID 0xE0 (224)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 1.7 GB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
players ServerPlayerListPlayer[] Yes 4096000

RemoveFromServerPlayerList

Property Value
Packet ID 0xE1 (225)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 65.5 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
players UUID[] Yes 4096000

UpdateServerPlayerList

Property Value
Packet ID 0xE2 (226)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 131.1 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
players ServerPlayerListUpdate[] Yes 4096000

UpdateServerPlayerListPing

Property Value
Packet ID 0xE3 (227)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 81.9 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
players Map<UUID, Integer> Yes -

UpdateKnownRecipes

Property Value
Packet ID 0xE4 (228)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 1.7 GB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
known Map<String, CraftingRecipe> Yes -

UpdatePortal

Property Value
Packet ID 0xE5 (229)
Compressed No
Fixed Block Size 6 bytes
Variable Field Count 1
Max Size 16.4 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
state PortalState Yes -
definition PortalDef Yes -

UpdateVisibleHudComponents

Property Value
Packet ID 0xE6 (230)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 4.1 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
visibleComponents HudComponent[] Yes 4096000

visibleComponents enum values:

  • 0 = Hotbar
  • 1 = StatusIcons
  • 2 = Reticle
  • 3 = Chat
  • 4 = Requests
  • 5 = Notifications
  • 6 = KillFeed
  • 7 = InputBindings
  • 8 = PlayerList
  • 9 = EventTitle
  • 10 = Compass
  • 11 = ObjectivePanel
  • 12 = PortalPanel
  • 13 = BuilderToolsLegend
  • 14 = Speedometer
  • 15 = UtilitySlotSelector
  • 16 = BlockVariantSelector
  • 17 = BuilderToolsMaterialSlotSelector
  • 18 = Stamina
  • 19 = AmmoIndicator
  • 20 = Health
  • 21 = Mana
  • 22 = Oxygen
  • 23 = Sleep

ResetUserInterfaceState

Property Value
Packet ID 0xE7 (231)
Compressed No
Fixed Block Size 0 bytes
Variable Field Count 0
Max Size 0 bytes

UpdateLanguage

Property Value
Packet ID 0xE8 (232)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 16.4 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
language String Yes 4096000

WorldSavingStatus

Property Value
Packet ID 0xE9 (233)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 0
Max Size 1 bytes

Fields

Name Type Nullable Max Length
isWorldSaving boolean No -

OpenChatWithCommand

Property Value
Packet ID 0xEA (234)
Compressed No
Fixed Block Size 1 bytes
Variable Field Count 1
Max Size 16.4 MB
Nullable Bit Field 1 byte(s)

Fields

Name Type Nullable Max Length
command String Yes 4096000

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