Cape Command

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

Ran on Kiln's test stand (2026-11-04): CapeCommandFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/Packet.

What it needs from Kiln

an access widener
Mixin
com.mojang.authlib.GameProfile
net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationNetworking
net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationNetworking.ConfigurationPayloadHandler
net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationNetworking.Context
net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
net.fabricmc.fabric.api.networking.v1.ServerConfigurationConnectionEvents
net.fabricmc.fabric.api.networking.v1.ServerConfigurationConnectionEvents.Configure
net.fabricmc.fabric.api.networking.v1.ServerConfigurationNetworking
net.minecraft.commands.CommandSourceStack
net.minecraft.commands.Commands
net.minecraft.commands.Commands.CommandSelection
net.minecraft.commands.SharedSuggestionProvider
net.minecraft.network.FriendlyByteBuf
net.minecraft.network.codec.StreamCodec
net.minecraft.network.protocol.common.custom.CustomPacketPayload
net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
net.minecraft.network.protocol.game.ClientboundChangeDifficultyPacket
net.minecraft.network.protocol.game.ClientboundPlayerAbilitiesPacket
net.minecraft.network.protocol.game.ClientboundPlayerInfoRemovePacket
net.minecraft.network.protocol.game.ClientboundPlayerInfoUpdatePacket
net.minecraft.network.protocol.game.ClientboundRespawnPacket
net.minecraft.server.MinecraftServer
net.minecraft.server.level.ChunkMap
net.minecraft.server.level.ChunkMap.TrackedEntity
net.minecraft.server.level.ServerChunkCache
net.minecraft.server.network.ServerGamePacketListenerImpl
net.minecraft.server.players.PlayerList
net.minecraft.world.level.storage.LevelData
net.minecraft.network.protocol.Packet
ServerLevel.getChunkSource()
ServerLevel.getDifficulty()
ServerLevel.getLevelData()
ServerPlayer.connection
ServerPlayer.createCommonSpawnInfo()
ServerPlayer.getAbilities()
ServerPlayer.getGameProfile()
ServerPlayer.getId()
ServerPlayer.getXRot()
and 2 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

Adds a /cape command to Minecraft, which allows you to use any cape you want. Features Geyser compatibility.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file capecommand-fabric-0.3.2-26.3.jar. The scan reads the mod's classes; it does not run them.

Reports from players

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