Tiered Backpacks

Evidence

Ran on Kiln's test stand (2026-11-04) without the mods it depends on: it stopped at kotlin.jvm.internal.Intrinsics, a class from another mod or library the stand did not have.

What it needs from Kiln

• an access widener
• Mixin
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
• net.fabricmc.fabric.api.menu.v1.ExtendedMenuProvider
• net.fabricmc.fabric.api.menu.v1.ExtendedMenuType
• net.fabricmc.fabric.api.menu.v1.ExtendedMenuType.ExtendedFactory
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.minecraft.client.gui.screens.MenuScreens
• net.minecraft.client.gui.screens.MenuScreens.ScreenConstructor
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.client.renderer.RenderPipelines
• net.minecraft.core.HolderSet
• net.minecraft.core.NonNullList
• net.minecraft.core.component.DataComponentType
• net.minecraft.core.component.DataComponentType.Builder
• net.minecraft.core.component.DataComponents
• 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.tags.DamageTypeTags
• net.minecraft.tags.ItemTags
• net.minecraft.tags.TagKey
• net.minecraft.util.StringRepresentable.EnumCodec
• net.minecraft.world.SimpleContainer
• net.minecraft.world.entity.EquipmentSlot
• net.minecraft.world.entity.player.Inventory
• net.minecraft.world.inventory.AbstractContainerMenu
• net.minecraft.world.inventory.Slot
• net.minecraft.world.item.component.DamageResistant
• net.minecraft.world.item.component.DyedItemColor
• net.minecraft.world.item.component.ItemContainerContents
• net.minecraft.world.item.crafting.CraftingInput
• net.minecraft.world.item.crafting.CustomRecipe
• net.minecraft.world.item.crafting.RecipeSerializer
• net.minecraft.world.level.GameType
• org.lwjgl.sdl.SDLKeycode
• FabricCreativeModeTabOutput.insertBefore()
• and 35 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

Simple and configurable tiered backpacks

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file tiered_backpacks-fabric-1.0.21+26.3.jar. The scan reads the mod's classes; it does not run them.