TrUtils

Evidence

Ran on Kiln's test stand (2026-11-04): TrUtils did not start: java.lang.NoClassDefFoundError: net/minecraft/server/MinecraftServer; TrUtilsClient did not start: java.lang.NoClassDefFoundError: net/minecraft/world/inventory/MenuType.

What it needs from Kiln

• an access widener
• Mixin
• io.netty.buffer.Unpooled
• net.fabricmc.api.EnvType
• 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.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.datagen.v1.DataGeneratorEntrypoint
• net.fabricmc.fabric.api.datagen.v1.FabricDataGenerator
• 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.ServerStopped
• net.fabricmc.fabric.api.menu.v1.ExtendedMenuType
• net.fabricmc.fabric.api.menu.v1.ExtendedMenuType.ExtendedFactory
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.loader.api.ModContainer
• net.fabricmc.loader.api.Version
• net.fabricmc.loader.api.entrypoint.EntrypointContainer
• net.fabricmc.loader.api.metadata.ModMetadata
• net.minecraft.SharedConstants
• net.minecraft.WorldVersion
• net.minecraft.client.gui.screens.MenuScreens
• net.minecraft.client.gui.screens.MenuScreens.ScreenConstructor
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.SharedSuggestionProvider
• net.minecraft.commands.arguments.EntityArgument
• net.minecraft.commands.arguments.IdentifierArgument
• net.minecraft.commands.arguments.ResourceArgument
• net.minecraft.core.NonNullList
• net.minecraft.core.component.DataComponentMap
• net.minecraft.data.DataProvider
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.codec.ByteBufCodecs
• 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.packs.PackLocationInfo
• and 38 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Machines (0.4), Mixin (0.5)

In the author's words

A library mod with a bunch of random utilities.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file trutils-0.4.0-beta.1+26.3.jar. The scan reads the mod's classes; it does not run them.