Fabwork

Evidence

Ran on Kiln's test stand (2026-11-04): FabworkServer did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/ServerCommonPacketListener; FabworkClientImpl did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• Mixin
• com.mojang.authlib.GameProfile
• net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationConnectionEvents.Complete
• net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationConnectionEvents.Init
• net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationNetworking
• net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationNetworking.ConfigurationPayloadHandler
• net.fabricmc.fabric.api.client.networking.v1.ClientConfigurationNetworking.Context
• net.fabricmc.fabric.api.event.EventFactory
• net.fabricmc.fabric.api.networking.v1.PacketSender
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerConfigurationConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerConfigurationConnectionEvents.Configure
• net.fabricmc.fabric.api.networking.v1.ServerConfigurationNetworking
• net.fabricmc.fabric.api.networking.v1.ServerConfigurationNetworking.ConfigurationPacketHandler
• net.fabricmc.fabric.api.networking.v1.ServerConfigurationNetworking.Context
• net.fabricmc.loader.api.ModContainer
• net.fabricmc.loader.api.Version
• net.fabricmc.loader.api.entrypoint.EntrypointContainer
• net.fabricmc.loader.api.metadata.CustomValue
• net.fabricmc.loader.api.metadata.CustomValue.CvObject
• net.fabricmc.loader.api.metadata.ModMetadata
• net.minecraft.client.multiplayer.ClientConfigurationPacketListenerImpl
• net.minecraft.network.Connection
• net.minecraft.network.DisconnectionDetails
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.codec.StreamCodec.CodecOperation
• 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.server.network.ConfigurationTask
• net.minecraft.server.network.ConfigurationTask.Type
• net.minecraft.server.network.ServerCommonPacketListenerImpl
• net.minecraft.server.network.ServerConfigurationPacketListenerImpl
• net.minecraft.util.ByIdMap
• net.minecraft.util.ByIdMap.OutOfBoundsStrategy
• org.apache.logging.log4j.LogManager
• org.apache.logging.log4j.Logger
• net.minecraft.network.protocol.common.ServerCommonPacketListener
• FabricLoader.getAllMods()
• and 2 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

Networking API for Fabric

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file fabwork-1.4.1+26.3.jar. The scan reads the mod's classes; it does not run them.