Fabric Packet Logger
作者：HelixCraft
Deep packet logging mod for Minecraft Fabric - captures all network traffic with full NBT/Component data
截图
介绍
中文介绍正在准备中，下面暂时显示原文。
Fabric Package Logger
A deep packet logging mod for Minecraft Fabric that captures all network traffic (S2C and C2S) with full NBT/Component data.
Use Cases
- Mod Development: Debug network communication between client and server
- Container Inspection: View exact contents of inventories with full NBT/Component data and copying them
- Reverse Engineering: Analyze server-side mechanics and packet structures
- Anti-Cheat Analysis: Understand what data the server sends and receives
- Learning: Understand how Minecraft’s network protocol works
Usage
Keybind
Press F6 to open the config screen.
Packet Selection
Use the dual-list selector to choose which packets to log:
- S2C (Server → Client): Incoming packets like inventory updates, entity spawns, etc.
- C2S (Client → Server): Outgoing packets like clicks, movements, etc.
Log Modes
- Chat: Display packets in the game chat (truncated for readability)
- File: Save packets to log files with full data
Log Files
Logs are saved to:
MINECRAFT_FOLDER/packet-logger/packets_2026-01-04_15-30-45_servername.logA new log file is created when:
- Joining a world/server
- Re-enabling logging after it was disabled
Example Output
[12:34:56.789] [S2C] InventoryS2CPacket {syncId:2,revision:1,id:"minecraft:generic_9x3",components:{"minecraft:container":[{item:{id:"minecraft:diamond_sword",count:1,components:{"minecraft:enchantments":{levels:{"minecraft:sharpness":5}}}},slot:0}]}}
Available Packets
All packets are loaded dynamically from the game’s PacketType registries and are selectable in the config screen’s dual-list selector. Both S2C (Server → Client) and C2S (Client → Server) packets are covered across all protocol phases.
See for an example listing of all packets for Minecraft 1.21.4.
Click to expand (573 packets)
S2C (Server → Client)
Common
CommonPingS2CPacketCookieRequestS2CPacketCustomPayloadS2CPacketCustomReportDetailsS2CPacketDisconnectS2CPacketKeepAliveS2CPacketResourcePackRemoveS2CPacketResourcePackSendS2CPacketServerLinksS2CPacketServerTransferS2CPacketStoreCookieS2CPacketSynchronizeTagsS2CPacket
Config
DynamicRegistriesS2CPacketFeaturesS2CPacketReadyS2CPacketResetChatS2CPacketSelectKnownPacksS2CPacket
Custom
DebugBeeCustomPayloadBeeDebugBrainCustomPayloadBrainDebugBreezeCustomPayloadBreezeInfoDebugGameEventCustomPayloadDebugGameEventListenersCustomPayloadDebugGameTestAddMarkerCustomPayloadDebugGameTestClearCustomPayloadDebugGoalSelectorCustomPayloadGoalDebugHiveCustomPayloadHiveInfoDebugNeighborsUpdateCustomPayloadDebugPathCustomPayloadDebugPoiAddedCustomPayloadDebugPoiRemovedCustomPayloadDebugPoiTicketCountCustomPayloadDebugRaidsCustomPayloadDebugRedstoneUpdateOrderCustomPayloadWireDebugStructuresCustomPayloadPieceDebugVillageSectionsCustomPayloadDebugWorldgenAttemptCustomPayload
Login
LoginCompressionS2CPacketLoginDisconnectS2CPacketLoginHelloS2CPacketLoginQueryRequestS2CPacketLoginQueryRequestPayloadLoginSuccessS2CPacketUnknownLoginQueryRequestPayload
Play
AdvancementUpdateS2CPacketBlockBreakingProgressS2CPacketBlockEntityUpdateS2CPacketBlockEventS2CPacketBlockUpdateS2CPacketBossBarS2CPacketActionAddActionConsumerTypeUpdateNameActionUpdateProgressActionUpdatePropertiesActionUpdateStyleActionBundleDelimiterS2CPacketBundleS2CPacketChatMessageS2CPacketChatSuggestionsS2CPacketActionChunkBiomeDataS2CPacketSerializedChunkDataS2CPacketBlockEntityDataBlockEntityVisitorChunkDeltaUpdateS2CPacketChunkLoadDistanceS2CPacketChunkRenderDistanceCenterS2CPacketChunkSentS2CPacketClearTitleS2CPacketCloseScreenS2CPacketCommandSuggestionsS2CPacketSuggestionCommandTreeS2CPacketArgumentNodeCommandNodeDataCommandTreeLiteralNodeSuggestableNodeCommonPlayerSpawnInfoCooldownUpdateS2CPacketCraftFailedResponseS2CPacketDamageTiltS2CPacketDeathMessageS2CPacketDebugSampleS2CPacketDifficultyS2CPacketEndCombatS2CPacketEnterCombatS2CPacketEnterReconfigurationS2CPacketEntitiesDestroyS2CPacketEntityAnimationS2CPacketEntityAttachS2CPacketEntityAttributesS2CPacketEntryEntityDamageS2CPacketEntityEquipmentUpdateS2CPacketEntityPassengersSetS2CPacketEntityPositionS2CPacketEntityPositionSyncS2CPacketEntityS2CPacketMoveRelativeRotateRotateAndMoveRelativeEntitySetHeadYawS2CPacketEntitySpawnS2CPacketEntityStatusEffectS2CPacketEntityStatusS2CPacketEntityTrackerUpdateS2CPacketEntityVelocityUpdateS2CPacketExperienceBarUpdateS2CPacketExperienceOrbSpawnS2CPacketExplosionS2CPacketGameJoinS2CPacketGameMessageS2CPacketGameStateChangeS2CPacketReasonHealthUpdateS2CPacketInventoryS2CPacketItemPickupAnimationS2CPacketLightUpdateS2CPacketLookAtS2CPacketMapUpdateS2CPacketMoveMinecartAlongTrackS2CPacketNbtQueryResponseS2CPacketOpenHorseScreenS2CPacketOpenScreenS2CPacketOpenWrittenBookS2CPacketOverlayMessageS2CPacketParticleS2CPacketPlayerAbilitiesS2CPacketPlayerActionResponseS2CPacketPlayerListHeaderS2CPacketPlayerListS2CPacketActionEntrySerializedPlayerPositionLookS2CPacketPlayerRemoveS2CPacketPlayerRespawnS2CPacketPlayerRotationS2CPacketPlayerSpawnPositionS2CPacketPlaySoundFromEntityS2CPacketPlaySoundS2CPacketProfilelessChatMessageS2CPacketProjectilePowerS2CPacketRecipeBookAddS2CPacketEntryRecipeBookRemoveS2CPacketRecipeBookSettingsS2CPacketRemoveEntityStatusEffectS2CPacketRemoveMessageS2CPacketScoreboardDisplayS2CPacketScoreboardObjectiveUpdateS2CPacketScoreboardScoreResetS2CPacketScoreboardScoreUpdateS2CPacketScreenHandlerPropertyUpdateS2CPacketScreenHandlerSlotUpdateS2CPacketSelectAdvancementTabS2CPacketServerMetadataS2CPacketSetCameraEntityS2CPacketSetCursorItemS2CPacketSetPlayerInventoryS2CPacketSetTradeOffersS2CPacketSignEditorOpenS2CPacketSimulationDistanceS2CPacketStartChunkSendS2CPacketStatisticsS2CPacketStopSoundS2CPacketSubtitleS2CPacketSynchronizeRecipesS2CPacketTeamS2CPacketOperationSerializableTeamTickStepS2CPacketTitleFadeS2CPacketTitleS2CPacketUnloadChunkS2CPacketUpdateSelectedSlotS2CPacketUpdateTickRateS2CPacketVehicleMoveS2CPacketWorldBorderCenterChangedS2CPacketWorldBorderInitializeS2CPacketWorldBorderInterpolateSizeS2CPacketWorldBorderSizeChangedS2CPacketWorldBorderWarningBlocksChangedS2CPacketWorldBorderWarningTimeChangedS2CPacketWorldEventS2CPacketWorldTimeUpdateS2CPacket
Query
PingResultS2CPacketQueryResponseS2CPacket
C2S (Client → Server)
Common
ClientOptionsC2SPacketCommonPongC2SPacketCookieResponseC2SPacketCustomPayloadC2SPacketKeepAliveC2SPacketResourcePackStatusC2SPacketStatusSyncedClientOptions
Config
ReadyC2SPacketSelectKnownPacksC2SPacket
Handshake
HandshakeC2SPacketConnectionIntent
Login
EnterConfigurationC2SPacketLoginHelloC2SPacketLoginKeyC2SPacketLoginQueryResponseC2SPacketLoginQueryResponsePayloadUnknownLoginQueryResponsePayload
Play
AcknowledgeChunksC2SPacketAcknowledgeReconfigurationC2SPacketAdvancementTabC2SPacketActionBoatPaddleStateC2SPacketBookUpdateC2SPacketBundleItemSelectedC2SPacketButtonClickC2SPacketChatCommandSignedC2SPacketChatMessageC2SPacketClickSlotC2SPacketClientCommandC2SPacketModeClientStatusC2SPacketModeClientTickEndC2SPacketCloseHandledScreenC2SPacketCommandExecutionC2SPacketCraftRequestC2SPacketCreativeInventoryActionC2SPacketDebugSampleSubscriptionC2SPacketHandSwingC2SPacketJigsawGeneratingC2SPacketMessageAcknowledgmentC2SPacketPickItemFromBlockC2SPacketPickItemFromEntityC2SPacketPlayerActionC2SPacketActionPlayerInputC2SPacketPlayerInteractBlockC2SPacketPlayerInteractEntityC2SPacketHandlerInteractAtHandlerInteractHandlerInteractTypeInteractTypeHandlerPlayerInteractItemC2SPacketPlayerLoadedC2SPacketPlayerMoveC2SPacketFullLookAndOnGroundOnGroundOnlyPositionAndOnGroundPlayerSessionC2SPacketQueryBlockNbtC2SPacketQueryEntityNbtC2SPacketRecipeBookDataC2SPacketRecipeCategoryOptionsC2SPacketRenameItemC2SPacketRequestCommandCompletionsC2SPacketSelectMerchantTradeC2SPacketSlotChangedStateC2SPacketSpectatorTeleportC2SPacketTeleportConfirmC2SPacketUpdateBeaconC2SPacketUpdateCommandBlockC2SPacketUpdateCommandBlockMinecartC2SPacketUpdateDifficultyC2SPacketUpdateDifficultyLockC2SPacketUpdateJigsawC2SPacketUpdatePlayerAbilitiesC2SPacketUpdateSelectedSlotC2SPacketUpdateSignC2SPacketUpdateStructureBlockC2SPacketVehicleMoveC2SPacket
Query
QueryPingC2SPacketQueryRequestC2SPacket
License
This project is licensed under the GNU General Public License v3.0).
Credits
- Fabric API Team
- Minecraft Modding Community
常见问题
Fabric Packet Logger 支持哪些 Minecraft 版本？
Fabric Packet Logger 支持 Minecraft Java 版 1.21–26.2，共 16 个版本，可用的加载器：Fabric。下载时注意选择和你游戏版本一致的文件。
Fabric Packet Logger 怎么安装？
先用 PCL2 或 HMCL 启动器安装对应版本的 Fabric，再把下载的 .jar 文件放进游戏目录的 mods 文件夹，重新启动游戏即可。开启了版本隔离的，mods 文件夹在 versions/版本名 下面。运行环境：仅客户端。
HelixCraft 的其他作品
查看全部 →
AFK Utilitys
by HelixCraft
Advanced AFK management mod for Minecraft Fabric with anti-kick protection, auto-reconnect, safety disconnect, and hunger management
4,289
9 个月前
Modrinth
Slot Click Macros
by HelixCraft
A Minecraft Fabric mod that records and replays inventory click sequences to automate repetitive container interactions.
2,081
8 个月前
Modrinth
Crystal per Second HUD
by HelixCraft
Mod that displays End Crystals destroyed per second (CPS) as an in-game HUD overlay, with full multi-version support via Stonecutter.
1,370
4 个月前
Modrinth
Container Data Dumper
by HelixCraft
Copy container and inventory data as Data Components directly to your clipboard - works with any container block or entity in Minecraft 1.20-1.21+
561
10 个月前
Modrinth
评论
登录后评论和评分