Fast Masa Config UI

Evidence

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

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.InputConstants.Key
• com.mojang.blaze3d.platform.TextInputManager
• com.mojang.blaze3d.platform.Window
• com.mojang.blaze3d.platform.cursor.CursorTypes
• com.mojang.blaze3d.vertex.BufferBuilder
• com.mojang.blaze3d.vertex.MeshData
• com.mojang.blaze3d.vertex.VertexConsumer
• 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.rendering.v1.level.LevelRenderContext
• net.fabricmc.fabric.api.client.rendering.v1.level.LevelRenderEvents
• net.fabricmc.fabric.api.client.rendering.v1.level.LevelRenderEvents.EndMain
• net.minecraft.client.Camera
• net.minecraft.client.OptionInstance
• net.minecraft.client.Options
• net.minecraft.client.gui.navigation.ScreenRectangle
• net.minecraft.client.input.CharacterEvent
• net.minecraft.client.input.KeyEvent
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.client.renderer.GameRenderer
• net.minecraft.client.renderer.state.level.BlockBreakingRenderState
• net.minecraft.client.renderer.state.level.LevelRenderState
• net.minecraft.client.resources.language.LanguageManager
• net.minecraft.network.chat.CommonComponents
• net.minecraft.util.ARGB
• net.minecraft.world.entity.EntityType
• net.minecraft.world.phys.AABB
• net.minecraft.world.phys.shapes.VoxelShape
• org.apache.logging.log4j.Logger
• ImmutableList.size()
• InputConstants.getKey()
• KeyMapping.matches()
• KeyMapping.saveString()
• KeyMapping.setDown()
• Minecraft.gameDirectory
• Minecraft.gameMode
• Minecraft.gameRenderer
• Minecraft.getLanguageManager()
• Minecraft.getWindow()
• and 12 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

Added a quick configuration UI for Malilib mods, so you don’t have to worry about running out of hotkeys anymore

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file fast-masa-config-26.3-5.4.0.jar. The scan reads the mod's classes; it does not run them.