LazyCraft

Evidence

Ran on Kiln's test stand (2026-11-04): LazyCraftFabric did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/client/command/v2/ClientCommandRegistrationCallback.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents.ClientStopping
• net.minecraft.client.gui.screens.recipebook.RecipeCollection
• net.minecraft.client.gui.screens.recipebook.RecipeCollection.CraftableStatus
• net.minecraft.client.multiplayer.MultiPlayerGameMode
• net.minecraft.commands.arguments.item.ItemArgument
• net.minecraft.commands.arguments.item.ItemInput
• net.minecraft.core.NonNullList
• net.minecraft.util.context.ContextMap
• net.minecraft.world.entity.player.Inventory
• net.minecraft.world.inventory.AbstractContainerMenu
• net.minecraft.world.inventory.AbstractCraftingMenu
• net.minecraft.world.inventory.ContainerInput
• net.minecraft.world.inventory.Slot
• net.minecraft.world.item.crafting.CraftingInput
• net.minecraft.world.item.crafting.CraftingRecipe
• net.minecraft.world.item.crafting.Ingredient
• net.minecraft.world.item.crafting.display.RecipeDisplay
• net.minecraft.world.item.crafting.display.RecipeDisplayEntry
• net.minecraft.world.item.crafting.display.RecipeDisplayId
• net.minecraft.world.item.crafting.display.ShapedCraftingRecipeDisplay
• net.minecraft.world.item.crafting.display.ShapelessCraftingRecipeDisplay
• net.minecraft.world.item.crafting.display.SlotDisplay
• net.minecraft.world.item.crafting.display.SlotDisplay.AnyFuel
• net.minecraft.world.item.crafting.display.SlotDisplay.Composite
• net.minecraft.world.item.crafting.display.SlotDisplay.Empty
• net.minecraft.world.item.crafting.display.SlotDisplay.ItemSlotDisplay
• net.minecraft.world.item.crafting.display.SlotDisplay.ItemStackSlotDisplay
• net.minecraft.world.item.crafting.display.SlotDisplay.OnlyWithComponent
• net.minecraft.world.item.crafting.display.SlotDisplay.TagSlotDisplay
• net.minecraft.world.item.crafting.display.SlotDisplay.WithAnyPotion
• net.minecraft.world.item.crafting.display.SlotDisplay.WithRemainder
• net.minecraft.world.item.crafting.display.SlotDisplayContext
• Minecraft.gameMode
• LocalPlayer.containerMenu
• LocalPlayer.getInventory()
• Player.containerMenu
• and 5 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

Recursive/chain crafting and more!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file lazycraft-fabric-26.x-1.3.3.jar. The scan reads the mod's classes; it does not run them.