Command Modification

Evidence

Ran on Kiln's test stand (2026-11-04): GeneratedMod did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/gamerule/v1/GameRuleBuilder; ModClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.Context
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStopping
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder.BooleanRuleBuilder
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.chat.Style
• 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.server.MinecraftServer
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.players.PlayerList
• net.minecraft.world.level.gamerules.GameRule
• net.minecraft.world.level.gamerules.GameRuleCategory
• net.minecraft.world.level.gamerules.GameRules
• Minecraft.execute()
• Minecraft.setScreenAndShow()
• GuiGraphicsExtractor.centeredText()
• Screen.extractRenderState()
• Screen.removed()
• MutableComponent.withStyle()
• ServerLevel.getGameRules()

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

Make /time /tp /kill /weather usable without cheating

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file command_modification-2.3.0-fabric-26.1-26.3.jar. The scan reads the mod's classes; it does not run them.