Sleep Spectator

Evidence

Ran on Kiln's test stand (2026-11-04): SleepSpectatorMod did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload; SleepSpectatorClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/player/AbstractClientPlayer.

What it needs from Kiln

• com.mojang.authlib.GameProfile
• 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.networking.v1.PayloadTypeRegistry
• 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.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.minecraft.client.CameraType
• net.minecraft.client.Options
• net.minecraft.client.gui.screens.InBedChatScreen
• net.minecraft.client.input.KeyEvent
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.client.player.AbstractClientPlayer
• net.minecraft.network.RegistryFriendlyByteBuf
• 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.MinecraftServer
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.players.PlayerList
• InputConstants.isKeyDown()
• Minecraft.execute()
• Minecraft.gameDirectory
• Minecraft.getCameraEntity()
• Minecraft.options
• Minecraft.setCameraEntity()
• GuiGraphicsExtractor.centeredText()
• GuiGraphicsExtractor.item()
• GuiGraphicsExtractor.outline()
• ClientLevel.players()
• LocalPlayer.isSleeping()
• ServerLevel.getServer()
• ServerPlayer.getGameProfile()
• ServerPlayer.isSleeping()
• Items.ENDER_EYE

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

In the author's words

Watch other players while sleeping instead of waiting for the night to pass.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file sleepspectator-fabric-1.0.4-26.3.jar. The scan reads the mod's classes; it does not run them.