Stack Size Tweaks

Evidence

Ran on Kiln's test stand (2026-11-04): StackSizeTweaks did not start: java.lang.NoClassDefFoundError: org/apache/commons/lang3/Validate; StackSizeTweaksClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.InputConstants.Key
• net.fabricmc.fabric.api.client.item.v1.ItemTooltipCallback
• net.fabricmc.fabric.api.item.v1.DefaultItemComponentEvents
• net.fabricmc.fabric.api.item.v1.DefaultItemComponentEvents.ModifyCallback
• net.fabricmc.fabric.api.item.v1.DefaultItemComponentEvents.ModifyContext
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.client.gui.screens.inventory.CreativeModeInventoryScreen
• net.minecraft.core.NonNullList
• net.minecraft.core.component.DataComponentMap
• net.minecraft.core.component.DataComponentMap.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.tags.BlockTags
• net.minecraft.world.Container
• net.minecraft.world.inventory.AbstractContainerMenu
• net.minecraft.world.inventory.Slot
• net.minecraft.world.item.BoatItem
• net.minecraft.world.item.BucketItem
• net.minecraft.world.item.Item.TooltipContext
• net.minecraft.world.item.ItemStackTemplate
• net.minecraft.world.item.MinecartItem
• net.minecraft.world.item.MobBucketItem
• net.minecraft.world.item.SolidBucketItem
• net.minecraft.world.item.component.UseRemainder
• net.minecraft.world.level.block.entity.BlockEntity
• org.apache.commons.lang3.Validate
• InputConstants.UNKNOWN
• KeyMapping.matches()
• BuiltInRegistries.BLOCK_ENTITY_TYPE
• ServerPlayer.containerMenu
• Player.containerMenu
• Item.components()
• ItemStack.copyWithCount()
• ItemStack.isSameItemSameComponents()
• Items.BOWL
• Items.ENCHANTED_BOOK
• Items.GOAT_HORN
• and 6 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 mod changing the default stack size of items for a better survival experience.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file stacksizetweaks-fabric-0.4.1+26.3.jar. The scan reads the mod's classes; it does not run them.