Preventer

Evidence

Ran on Kiln's test stand (2026-11-04): PreventerClient did not start: java.lang.NoSuchFieldError: Class com.mojang.blaze3d.platform.InputConstants does not have member field 'com.mojang.blaze3d.platform.InputConstants$Key UNKNOWN'.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.InputConstants.Key
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents.EndLevelTick
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Join
• net.fabricmc.fabric.api.event.player.AttackBlockCallback
• net.fabricmc.fabric.api.event.player.AttackEntityCallback
• net.fabricmc.fabric.api.event.player.UseBlockCallback
• net.fabricmc.fabric.api.event.player.UseEntityCallback
• net.fabricmc.fabric.api.event.player.UseItemCallback
• net.fabricmc.fabric.api.tag.convention.v2.ConventionalBlockTags
• net.minecraft.client.gui.components.toasts.SystemToast
• net.minecraft.client.gui.components.toasts.SystemToast.SystemToastId
• net.minecraft.client.gui.components.toasts.ToastManager
• net.minecraft.core.Direction.Axis
• net.minecraft.core.RegistryAccess
• net.minecraft.core.component.BlockTransformer
• net.minecraft.core.component.BlockTransformer.BlockTransformData
• net.minecraft.core.component.DataComponents
• net.minecraft.tags.BlockTags
• net.minecraft.tags.ItemTags
• net.minecraft.world.attribute.EnvironmentAttributeMap
• net.minecraft.world.attribute.EnvironmentAttributes
• net.minecraft.world.entity.TamableAnimal
• net.minecraft.world.entity.animal.allay.Allay
• net.minecraft.world.entity.animal.axolotl.Axolotl
• net.minecraft.world.entity.animal.bee.Bee
• net.minecraft.world.entity.animal.dolphin.Dolphin
• net.minecraft.world.entity.animal.equine.AbstractHorse
• net.minecraft.world.entity.animal.equine.Llama
• net.minecraft.world.entity.animal.fox.Fox
• net.minecraft.world.entity.animal.goat.Goat
• net.minecraft.world.entity.animal.golem.AbstractGolem
• net.minecraft.world.entity.animal.golem.IronGolem
• net.minecraft.world.entity.animal.panda.Panda
• net.minecraft.world.entity.animal.parrot.Parrot
• net.minecraft.world.entity.animal.polarbear.PolarBear
• net.minecraft.world.entity.animal.wolf.Wolf
• net.minecraft.world.entity.boss.enderdragon.EndCrystal
• net.minecraft.world.entity.decoration.ItemFrame
• net.minecraft.world.entity.decoration.painting.Painting
• and 69 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

A mod that prevents you from doing dumb things by accident.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file preventer-2.0.0.jar. The scan reads the mod's classes; it does not run them.