Ultimate Sleep

Evidence

Ran on Kiln's test stand (2026-11-04): UltimateSleep did not start: java.lang.NoClassDefFoundError: net/minecraft/world/entity/monster/Monster; UltimateSleepClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/client/networking/v1/ClientPlayNetworking.

What it needs from Kiln

• Mixin
• 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.entity.event.v1.EntitySleepEvents
• net.fabricmc.fabric.api.entity.event.v1.EntitySleepEvents.AllowNearbyMonsters
• 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.PayloadTypeRegistry
• 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.api.util.EventResult
• net.minecraft.client.gui.components.AbstractWidget
• net.minecraft.client.gui.components.EditBox
• net.minecraft.client.gui.components.StringWidget
• net.minecraft.client.gui.narration.NarratedElementType
• net.minecraft.client.gui.narration.NarrationElementOutput
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.SharedSuggestionProvider
• net.minecraft.core.GlobalPos
• net.minecraft.core.component.DataComponentMap
• net.minecraft.core.component.TypedDataComponent
• 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.network.protocol.game.ClientboundSetEntityDataPacket
• net.minecraft.network.syncher.SynchedEntityData
• net.minecraft.network.syncher.SynchedEntityData.DataValue
• net.minecraft.server.MinecraftServer
• net.minecraft.server.level.ServerPlayer.RespawnConfig
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.permissions.PermissionSet
• net.minecraft.server.permissions.Permissions
• and 51 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

A comprehensive, fully configurable sleep mod for Fabric: percentage or vote-based night skip, auto-sleep, wake rewards, accessibility toggles, optional world progression while you sleep, and an in-game admin panel. Coming soon.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file ultimate-sleep-1.4.0+26.3-fabric.jar. The scan reads the mod's classes; it does not run them.