Locked In Slots

Evidence

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

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.platform.InputConstants.Key
• net.minecraft.client.Options
• net.minecraft.client.gui.Hud
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.client.gui.screens.inventory.CreativeModeInventoryScreen
• net.minecraft.client.gui.screens.inventory.CreativeModeInventoryScreen.SlotWrapper
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.client.multiplayer.ServerData
• net.minecraft.client.resources.sounds.SimpleSoundInstance
• net.minecraft.client.server.IntegratedServer
• net.minecraft.client.sounds.SoundEngine
• net.minecraft.client.sounds.SoundEngine.PlayResult
• net.minecraft.client.sounds.SoundManager
• net.minecraft.core.NonNullList
• net.minecraft.util.Mth
• net.minecraft.world.entity.player.Inventory
• net.minecraft.world.inventory.AbstractContainerMenu
• net.minecraft.world.inventory.InventoryMenu
• net.minecraft.world.inventory.Slot
• net.minecraft.world.item.Item.TooltipContext
• net.minecraft.world.item.TooltipFlag
• net.minecraft.world.level.levelgen.WorldGenSettings
• net.minecraft.world.level.levelgen.WorldOptions
• net.minecraft.world.level.storage.WorldData
• net.minecraft.core.RegistryAccess
• InputConstants.isKeyDown()
• IntSet.isEmpty()
• KeyMapping.isUnbound()
• KeyMapping.key
• Minecraft.getCurrentServer()
• Minecraft.getSingleplayerServer()
• Minecraft.getSoundManager()
• Minecraft.isLocalServer()
• Minecraft.options
• Gui.hud
• GuiGraphicsExtractor.pose()
• GuiGraphicsExtractor.setTooltipForNextFrame()
• LocalPlayer.getInventory()
• Component.keybind()
• Player.getInventory()
• and 3 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

Lock your inventory slots. Protect your tools. Prevent accidents, fully client-side.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file lockedinslots-v26.3.0-mc26.3.x+fabric.jar. The scan reads the mod's classes; it does not run them.