Ultimate Shulker Trims

Evidence

Ran on Kiln's test stand (2026-11-04): UltimateShulkerTrims did not start: java.lang.NoClassDefFoundError: net/minecraft/world/item/crafting/RecipeSerializer; UltimateShulkerTrimsClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/networking/v1/PayloadTypeRegistry.

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.networking.v1.PayloadTypeRegistry
• net.minecraft.core.component.DataComponents
• net.minecraft.nbt.CompoundTag
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.codec.StreamCodec
• 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.world.item.component.CustomData
• net.minecraft.world.item.crafting.Ingredient
• net.minecraft.world.item.crafting.PlacementInfo
• net.minecraft.world.item.crafting.RecipeSerializer
• net.minecraft.world.item.crafting.SmithingRecipe
• net.minecraft.world.item.crafting.SmithingRecipeInput
• net.minecraft.world.level.block.entity.BlockEntity
• net.minecraft.world.level.block.entity.ShulkerBoxBlockEntity
• net.minecraft.world.level.storage.ValueInput
• net.minecraft.world.level.storage.ValueOutput
• Minecraft.execute()
• ClientLevel.getBlockEntity()
• Holder.getRegisteredName()
• BuiltInRegistries.RECIPE_SERIALIZER
• ItemStack.copyWithCount()
• ItemStack.get()

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

Apply Armor Trims to Shulker Boxes!

Scan

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