Lifesteal

Evidence

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

What it needs from Kiln

• Mixin
• com.mojang.authlib.GameProfile
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents.AfterDeath
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents.AllowDamage
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents.AllowDeath
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
• 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.Disconnect
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.core.NonNullList
• net.minecraft.core.RegistryAccess
• net.minecraft.core.RegistryAccess.Frozen
• net.minecraft.core.component.DataComponentType
• net.minecraft.core.component.DataComponents
• net.minecraft.nbt.CompoundTag
• net.minecraft.network.chat.Style
• net.minecraft.network.protocol.game.ClientboundSoundPacket
• net.minecraft.server.MinecraftServer
• net.minecraft.server.Services
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.players.NameAndId
• net.minecraft.server.players.PlayerList
• net.minecraft.server.players.UserBanList
• net.minecraft.server.players.UserBanListEntry
• net.minecraft.server.players.UserNameToIdResolver
• net.minecraft.util.Prediction
• net.minecraft.world.CompoundContainer
• net.minecraft.world.Container
• net.minecraft.world.SimpleContainer
• net.minecraft.world.SimpleMenuProvider
• net.minecraft.world.damagesource.DamageSource
• net.minecraft.world.effect.MobEffectInstance
• net.minecraft.world.effect.MobEffects
• and 65 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 mod implementing Lifesteal SMP mechanics with extensive server configuration options.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file lifesteal-26.3+r1.jar. The scan reads the mod's classes; it does not run them.