Fast Xp

Evidence

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

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.Window
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Join
• 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.client.multiplayer.MultiPlayerGameMode
• net.minecraft.network.Connection
• 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.world.item.ProjectileItem
• net.minecraft.world.item.component.SwingAnimation
• org.lwjgl.sdl.SDLMouse
• Minecraft.execute()
• Minecraft.gameMode
• Minecraft.getWindow()
• ClientPacketListener.getConnection()
• LocalPlayer.swing()

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 client side mod that throws xp faster.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file fast-xp-1.0.0.jar. The scan reads the mod's classes; it does not run them.