Perfectionist

Evidence

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

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Join
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.AfterInit
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.BeforeTick
• net.fabricmc.fabric.api.client.screen.v1.Screens
• 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.ImageButton
• net.minecraft.client.gui.components.WidgetSprites
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.client.gui.screens.inventory.InventoryScreen
• net.minecraft.client.multiplayer.ServerData
• net.minecraft.client.server.IntegratedServer
• net.minecraft.core.RegistryAccess
• net.minecraft.core.RegistryAccess.Frozen
• net.minecraft.network.chat.TextColor
• net.minecraft.network.protocol.game.ServerboundClientCommandPacket
• net.minecraft.network.protocol.game.ServerboundClientCommandPacket.Action
• net.minecraft.stats.StatType
• net.minecraft.stats.Stats
• net.minecraft.stats.StatsCounter
• net.minecraft.world.entity.player.Inventory
• net.minecraft.world.flag.FeatureFlagSet
• net.minecraft.world.flag.FeatureFlags
• net.minecraft.world.inventory.AbstractContainerMenu
• net.minecraft.world.item.AirItem
• net.minecraft.world.item.CreativeModeTab.ItemDisplayParameters
• net.minecraft.world.item.DebugStickItem
• net.minecraft.world.item.GameMasterBlockItem
• net.minecraft.world.item.KnowledgeBookItem
• net.minecraft.world.item.SpawnEggItem
• net.minecraft.world.level.GameType
• net.minecraft.world.level.block.InfestedBlock
• net.minecraft.world.level.storage.WorldData
• net.minecraft.network.protocol.Packet
• KeyMapping.matches()
• Minecraft.gameDirectory
• Minecraft.getCurrentServer()
• and 26 more

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

A lightweight, client side completionist mod that introduces an item discovery checklist for Minecraft players.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file perfectionist-fabric-26.3-1.2.4.jar. The scan reads the mod's classes; it does not run them.