VillagersTradingPlus

Evidence

Ran on Kiln's test stand (2026-11-04): VillagerTradingPlusFabric did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/resource/IdentifiableResourceReloadListener; VillagerTradingPlusClientFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• an access widener
• Mixin
• io.netty.buffer.Unpooled
• 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.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.resource.IdentifiableResourceReloadListener
• net.fabricmc.fabric.api.resource.ResourceManagerHelper
• net.minecraft.SharedConstants
• net.minecraft.WorldVersion
• net.minecraft.advancements.predicates.ItemPredicate
• net.minecraft.advancements.predicates.ItemPredicate.Builder
• net.minecraft.core.GlobalPos
• net.minecraft.core.HolderLookup.RegistryLookup
• net.minecraft.core.HolderSet
• net.minecraft.core.HolderSet.Named
• net.minecraft.core.RegistryAccess
• net.minecraft.core.component.DataComponentExactPredicate
• net.minecraft.core.component.DataComponentExactPredicate.Builder
• net.minecraft.core.component.DataComponentMap
• net.minecraft.core.component.DataComponentPatch
• net.minecraft.core.component.DataComponentPatch.Builder
• net.minecraft.core.component.DataComponentPatch.SplitResult
• net.minecraft.core.component.DataComponents
• net.minecraft.core.component.TypedDataComponent
• net.minecraft.nbt.CompoundTag
• net.minecraft.nbt.NbtOps
• net.minecraft.nbt.Tag
• net.minecraft.nbt.TagParser
• net.minecraft.network.RegistryFriendlyByteBuf
• net.minecraft.network.chat.ComponentSerialization
• net.minecraft.network.codec.ByteBufCodecs
• 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.resources.FileToIdConverter
• net.minecraft.resources.RegistryOps
• net.minecraft.server.MinecraftServer
• net.minecraft.server.network.Filterable
• and 80 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

Add or replace the trades of any villager, change the currency, gate trades behind conditions and reprice them, all from a datapack.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file villagertradingplus-fabric-mc26.3-1.1.0.jar. The scan reads the mod's classes; it does not run them.