DropGuard

Evidence

Ran on Kiln's test stand (2026-11-04): DropGuardClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/gui/screens/options/controls/KeyBindsScreen.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.InputConstants.Key
• net.minecraft.client.gui.components.AbstractSliderButton
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.CreateNarration
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.gui.components.EditBox
• net.minecraft.client.gui.components.Tooltip
• net.minecraft.client.gui.screens.ConfirmScreen
• net.minecraft.client.gui.screens.TitleScreen
• net.minecraft.client.gui.screens.options.controls.KeyBindsScreen
• net.minecraft.client.input.KeyEvent
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.client.multiplayer.MultiPlayerGameMode
• net.minecraft.core.RegistryAccess
• net.minecraft.core.component.DataComponentMap
• net.minecraft.core.component.DataComponentPatch
• net.minecraft.core.component.DataComponentPatch.SplitResult
• net.minecraft.core.component.DataComponents
• net.minecraft.core.component.TypedDataComponent
• net.minecraft.util.FormattedCharSequence
• net.minecraft.world.entity.player.Inventory
• org.lwjgl.sdl.SDLMouse
• org.lwjgl.sdl.SDLScancode
• JsonArray.forEach()
• InputConstants.UNKNOWN
• InputConstants.getKey()
• InputConstants.getKey()
• InputConstants.isKeyDown()
• InputConstants.Type.getOrCreate()
• KeyMapping.getTranslatedKeyMessage()
• KeyMapping.setKey()
• Minecraft.gameMode
• Minecraft.isGameLoadFinished()
• Minecraft.isWindowActive()
• Font.plainSubstrByWidth()
• Font.split()
• Gui.overlay()
• GuiGraphicsExtractor.blit()
• GuiGraphicsExtractor.centeredText()
• and 19 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

Prevent important items from being accidentally dropped with configurable item protection that follows them between inventory slots.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file drop-guard-2.9.4+mc26.3.jar. The scan reads the mod's classes; it does not run them.