CommandCrafter

Evidence

Ran on Kiln's test stand (2026-11-04): CommandCrafter did not start: java.lang.NoClassDefFoundError: org/apache/logging/log4j/LogManager; ClientCommandCrafter did not start: java.lang.NoClassDefFoundError: net/minecraft/world/flag/FeatureFlags.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.authlib.GameProfile
• com.mojang.logging.LogQueues
• com.mojang.logging.plugins.QueueLogAppender
• io.netty.buffer.ByteBuf
• io.netty.buffer.ByteBufUtil
• io.netty.channel.Channel
• io.netty.channel.local.LocalChannel
• io.netty.handler.codec.DecoderException
• net.fabricmc.api.EnvType
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents.ClientStarted
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents.ClientStopping
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Join
• 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.ServerStarted
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStopping
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndTick
• net.fabricmc.fabric.api.event.registry.DynamicRegistries
• net.fabricmc.fabric.api.event.registry.FabricRegistryBuilder
• net.fabricmc.fabric.api.networking.v1.FriendlyByteBufs
• net.fabricmc.fabric.api.networking.v1.PacketSender
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.impl.loot.LootUtil
• net.fabricmc.fabric.impl.resource.pack.ModResourcePackCreator
• net.fabricmc.loader.api.ModContainer
• net.fabricmc.loader.api.Version
• and 82 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

Useful Minecraft command tools in a Fabric mod and VSCode Extension (syntax highlighting, completion, debugging, etc.)

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file command-crafter-0.8.3+26.3.jar. The scan reads the mod's classes; it does not run them.