Eunomia

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

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

What it needs from Kiln

Mixin
com.mojang.authlib.GameProfile
io.netty.buffer.ByteBuf
net.minecraft.client.OptionInstance
net.minecraft.client.OptionInstance.CaptionBasedToString
net.minecraft.client.OptionInstance.IntRange
net.minecraft.client.OptionInstance.SliderableValueSet
net.minecraft.client.OptionInstance.TooltipSupplier
net.minecraft.client.OptionInstance.ValueSet
net.minecraft.client.OptionInstance.ValueUpdateListener
net.minecraft.client.Options
net.minecraft.client.User
net.minecraft.client.gui.components.AbstractWidget
net.minecraft.client.gui.components.Button
net.minecraft.client.gui.components.Button.Builder
net.minecraft.client.gui.components.Button.OnPress
net.minecraft.client.gui.components.CycleButton
net.minecraft.client.gui.components.EditBox
net.minecraft.client.gui.components.MultiLineTextWidget
net.minecraft.client.gui.components.OptionsList
net.minecraft.client.gui.components.StringWidget
net.minecraft.client.gui.components.Tooltip
net.minecraft.client.gui.components.toasts.SystemToast
net.minecraft.client.gui.components.toasts.SystemToast.SystemToastId
net.minecraft.client.gui.components.toasts.ToastManager
net.minecraft.client.gui.screens.options.OnlineOptionsScreen
net.minecraft.client.gui.screens.options.OptionsSubScreen
net.minecraft.client.multiplayer.ServerData
net.minecraft.network.chat.contents.TranslatableContents
net.minecraft.network.codec.StreamCodec
net.minecraft.network.protocol.common.ClientboundCustomPayloadPacket
net.minecraft.network.protocol.common.ServerboundCustomPayloadPacket
net.minecraft.network.protocol.common.custom.CustomPacketPayload
net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
net.minecraft.server.MinecraftServer
net.minecraft.server.network.ServerGamePacketListenerImpl
net.minecraft.server.permissions.LevelBasedPermissionSet
net.minecraft.server.permissions.PermissionLevel
net.minecraft.server.players.PlayerList
Minecraft.execute()
Minecraft.getCurrentServer()
and 12 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 library mod that handles networking (including packages, serialization and comms) as well as providing means to build native-looking user interfaces more easily.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file eunomia-fabric-0.3.15+26.3.jar. The scan reads the mod's classes; it does not run them.

Reports from players

No reports from players yet.

Thank you. Your report is counted.