Custom Skyboxes

Evidence

Ran on Kiln's test stand (2026-11-04): CustomskyboxesServer did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload; CustomskyboxesClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/resource/IdentifiableResourceReloadListener.

What it needs from Kiln

• Mixin
• com.mojang.authlib.GameProfile
• com.mojang.blaze3d.pipeline.RenderTarget
• com.mojang.blaze3d.platform.NativeImage
• com.mojang.blaze3d.systems.RenderSystem
• com.mojang.renderpearl.api.commands.CommandEncoder
• com.mojang.renderpearl.api.commands.RenderPass
• com.mojang.renderpearl.api.device.GpuDevice
• com.mojang.renderpearl.util.UncheckedAutoCloseable
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents.ClientStarted
• 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.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• 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.fabricmc.fabric.api.resource.ResourceManagerHelper
• net.fabricmc.fabric.api.resource.SimpleSynchronousResourceReloadListener
• net.minecraft.client.gui.Hud
• net.minecraft.client.gui.components.ChatComponent
• net.minecraft.client.renderer.GameRenderer
• net.minecraft.client.renderer.texture.AbstractTexture
• net.minecraft.client.renderer.texture.DynamicTexture
• net.minecraft.client.renderer.texture.SimpleTexture
• net.minecraft.client.renderer.texture.TextureManager
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.SharedSuggestionProvider
• net.minecraft.commands.arguments.EntityArgument
• net.minecraft.commands.arguments.IdentifierArgument
• net.minecraft.commands.arguments.selector.EntitySelector
• net.minecraft.commands.synchronization.SuggestionProviders
• net.minecraft.core.RegistryAccess
• net.minecraft.network.FriendlyByteBuf
• and 25 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

Custom Skyboxes is a mod that allows you to change the sky,clouds, sun, moon, rain, snow, and stars and custom rifts or Geckolib Models in the sky in real time with a texture or GIF with Commands!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file customskyboxes-mc26.3-1.0.4.2.jar. The scan reads the mod's classes; it does not run them.