simpleskills

Evidence

Ran on Kiln's test stand (2026-11-04): Simpleskills did not start: java.lang.NoClassDefFoundError: net/minecraft/core/particles/ParticleOptions.

What it needs from Kiln

• Mixin
• com.mojang.authlib.GameProfile
• com.mojang.blaze3d.platform.Window
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents.AfterDamage
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents.AllowDamage
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarting
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStopping
• net.fabricmc.fabric.api.event.player.AttackEntityCallback
• net.fabricmc.fabric.api.event.player.PlayerBlockBreakEvents
• net.fabricmc.fabric.api.event.player.PlayerBlockBreakEvents.After
• net.fabricmc.fabric.api.event.player.PlayerBlockBreakEvents.Before
• net.fabricmc.fabric.api.event.player.UseBlockCallback
• net.fabricmc.fabric.api.event.player.UseItemCallback
• net.fabricmc.fabric.api.networking.v1.PacketSender
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.fabricmc.loader.impl.util.StringUtil
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.SharedSuggestionProvider
• net.minecraft.core.RegistryAccess
• net.minecraft.core.RegistryAccess.Frozen
• net.minecraft.core.component.DataComponents
• net.minecraft.core.particles.ParticleOptions
• net.minecraft.core.particles.ParticleTypes
• net.minecraft.network.protocol.game.ClientboundTabListPacket
• net.minecraft.server.MinecraftServer
• net.minecraft.server.ServerScoreboard
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.permissions.Permission
• net.minecraft.server.permissions.Permission.HasCommandLevel
• net.minecraft.server.permissions.PermissionLevel
• net.minecraft.server.permissions.PermissionSet
• net.minecraft.server.players.PlayerList
• net.minecraft.tags.BlockTags
• net.minecraft.world.Container
• and 51 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

Runescape-esque skills in Minecraft.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file simpleskills-1.4.9.jar. The scan reads the mod's classes; it does not run them.