Swappy

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

Ran on Kiln's test stand (2026-11-04): SwappyClient did not start: java.lang.NoSuchMethodError: 'boolean net.fabricmc.loader.api.FabricLoader.isModLoaded(java.lang.String)'.

What it needs from Kiln

Mixin
com.mojang.blaze3d.platform.Window
com.mojang.blaze3d.platform.cursor.CursorTypes
net.minecraft.client.MouseHandler
net.minecraft.client.Options
net.minecraft.client.gui.screens.inventory.tooltip.ClientTooltipComponent
net.minecraft.client.gui.screens.inventory.tooltip.DefaultTooltipPositioner
net.minecraft.client.input.MouseButtonInfo
net.minecraft.client.multiplayer.MultiPlayerGameMode
net.minecraft.core.component.DataComponents
net.minecraft.world.entity.player.Inventory
net.minecraft.world.inventory.AbstractContainerMenu
net.minecraft.world.inventory.ContainerInput
FabricLoader.isModLoaded()
KeyMapping.isDown()
Minecraft.gameDirectory
Minecraft.gameMode
Minecraft.getWindow()
Minecraft.mouseHandler
Minecraft.options
GuiGraphicsExtractor.item()
GuiGraphicsExtractor.itemDecorations()
GuiGraphicsExtractor.nextStratum()
GuiGraphicsExtractor.requestCursor()
GuiGraphicsExtractor.tooltip()
Screen.getTooltipFromItem()
LocalPlayer.getInventory()
LocalPlayer.playSound()
Component.getVisualOrderText()
MutableComponent.getVisualOrderText()
Identifier.tryParse()
SoundEvents.BUNDLE_INSERT
SoundEvents.BUNDLE_INSERT_FAIL
Player.containerMenu
Player.getInventory()
ItemStack.copyWithCount()
ItemStack.get()

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 wheel for your saved item presets. Open it and swap your held item.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file swappy-1.2.jar. The scan reads the mod's classes; it does not run them.

Reports from players

No reports from players yet.

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