Paintbrush

Evidence

Ran on Kiln's test stand (2026-11-04): Paintbrush did not start: java.lang.NoClassDefFoundError: net/minecraft/world/item/BrushItem.

What it needs from Kiln

• Mixin
• net.minecraft.core.HolderSet
• net.minecraft.core.HolderSet.Direct
• net.minecraft.core.RegistryAccess
• net.minecraft.core.component.DataComponents
• net.minecraft.core.particles.BlockParticleOption
• net.minecraft.core.particles.ParticleTypes
• net.minecraft.nbt.CompoundTag
• net.minecraft.network.chat.Style
• net.minecraft.util.ProblemReporter
• net.minecraft.util.ProblemReporter.Collector
• net.minecraft.world.effect.MobEffectInstance
• net.minecraft.world.effect.MobEffects
• net.minecraft.world.entity.EquipmentSlot
• net.minecraft.world.entity.HumanoidArm
• net.minecraft.world.item.BrushItem
• net.minecraft.world.item.DyeColor
• net.minecraft.world.item.DyeItem
• net.minecraft.world.item.ItemUseAnimation
• net.minecraft.world.item.alchemy.PotionContents
• net.minecraft.world.item.alchemy.Potions
• net.minecraft.world.item.enchantment.EnchantmentHelper
• net.minecraft.world.item.enchantment.Enchantments
• net.minecraft.world.item.enchantment.ItemEnchantments
• net.minecraft.world.item.enchantment.Repairable
• net.minecraft.world.level.ClipContext
• net.minecraft.world.level.ClipContext.Fluid
• net.minecraft.world.level.block.AbstractBannerBlock
• net.minecraft.world.level.block.BedBlock
• net.minecraft.world.level.block.RenderShape
• net.minecraft.world.level.block.entity.BlockEntity
• net.minecraft.world.level.block.state.properties.BedPart
• net.minecraft.world.level.storage.TagValueInput
• net.minecraft.world.phys.HitResult.Type
• Registry.getOrThrow()
• Registries.ENCHANTMENT
• MutableComponent.withStyle()
• SoundEvents.BOTTLE_EMPTY
• SoundEvents.BRUSH_GENERIC
• SoundEvents.GLOW_INK_SAC_USE
• LivingEntity.getEffect()
• and 28 more

On the roadmap: Code next to data (0.3), Machines (0.4), Mixin (0.5)

In the author's words

This mod will make life easier for builders by breathing new life into the brush and adding coloring capabilities to it!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file paintbrush-fabric+26.3.jar. The scan reads the mod's classes; it does not run them.