Essential Commands

Evidence

Ran on Kiln's test stand (2026-11-04): EssentialCommands did not start: java.lang.NoSuchMethodError: 'java.util.Optional net.fabricmc.loader.api.FabricLoader.getModContainer(java.lang.String)'.

What it needs from Kiln

• Mixin
• com.mojang.authlib.GameProfile
• com.mojang.authlib.GameProfileRepository
• com.mojang.authlib.services.response.NameAndId
• io.netty.util.CharsetUtil
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.event.EventFactory
• 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.ServerStarting
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndTick
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.fabricmc.loader.api.ModContainer
• net.fabricmc.loader.api.Version
• net.fabricmc.loader.api.VersionParsingException
• net.fabricmc.loader.api.metadata.ModMetadata
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.arguments.ComponentArgument
• net.minecraft.commands.arguments.EntityArgument
• net.minecraft.commands.arguments.selector.EntitySelector
• net.minecraft.core.BlockPos.MutableBlockPos
• net.minecraft.core.GlobalPos
• net.minecraft.core.RegistryAccess
• net.minecraft.core.RegistryAccess.Frozen
• net.minecraft.core.SectionPos
• net.minecraft.nbt.CompoundTag
• net.minecraft.nbt.ListTag
• net.minecraft.nbt.NbtAccounter
• net.minecraft.nbt.NbtIo
• net.minecraft.nbt.NbtOps
• net.minecraft.nbt.Tag
• net.minecraft.network.chat.ClickEvent
• net.minecraft.network.chat.ClickEvent.RunCommand
• net.minecraft.network.chat.ComponentSerialization
• net.minecraft.network.chat.ComponentUtils
• net.minecraft.network.chat.FontDescription
• net.minecraft.network.chat.HoverEvent
• and 80 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

Configurable, permissions-backed utility commands for Fabric servers (tpa, home, warp, spawn, back, nick, rtp)

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file essential_commands-0.42.0-mc26.3.jar. The scan reads the mod's classes; it does not run them.