Handy Shulker

Evidence

Ran on Kiln's test stand (2026-11-04): HandyShulker did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload; HandyShulkerClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/inventory/tooltip/ClientTooltipComponent.

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.client.rendering.v1.ClientTooltipComponentCallback
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.BeforeInit
• net.fabricmc.fabric.api.client.screen.v1.ScreenMouseEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenMouseEvents.AllowMouseScroll
• 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.minecraft.client.ScrollWheelHandler
• net.minecraft.client.gui.ItemSlotMouseAction
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.client.gui.screens.inventory.tooltip.ClientTooltipComponent
• net.minecraft.client.gui.screens.inventory.tooltip.DefaultTooltipPositioner
• net.minecraft.client.renderer.RenderPipelines
• net.minecraft.core.NonNullList
• net.minecraft.core.component.DataComponents
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.codec.StreamCodec.CodecOperation
• 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.ServerboundSelectBundleItemPacket
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.util.ARGB
• net.minecraft.world.entity.player.Abilities
• net.minecraft.world.inventory.AbstractContainerMenu
• net.minecraft.world.inventory.ContainerInput
• net.minecraft.world.inventory.PlayerEnderChestContainer
• net.minecraft.world.inventory.Slot
• net.minecraft.world.inventory.tooltip.TooltipComponent
• net.minecraft.world.item.DyeColor
• net.minecraft.world.item.Item.TooltipContext
• net.minecraft.world.item.TooltipFlag
• net.minecraft.world.item.TooltipFlag.Default
• net.minecraft.world.item.component.ItemContainerContents
• and 23 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

Shulker boxes should work like bundles. Click to insert items, hover to preview contents, and scroll to extract — all without placing the box down.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file handyshulker-2.4.0.jar. The scan reads the mod's classes; it does not run them.