Mapart Helper

Evidence

Ran on Kiln's test stand (2026-11-04): MapartHelper did not start: java.lang.NoClassDefFoundError: org/apache/commons/lang3/Validate; MapartHelperClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/gui/render/pip/PictureInPictureRenderer.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.Blaze3D
• com.mojang.blaze3d.buffers.Std140Builder
• com.mojang.blaze3d.buffers.Std140SizeCalculator
• com.mojang.blaze3d.platform.Lighting
• com.mojang.blaze3d.platform.Lighting.Entry
• com.mojang.blaze3d.platform.NativeImage
• com.mojang.blaze3d.platform.Window
• com.mojang.blaze3d.systems.RenderSystem
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.renderpearl.api.buffers.GpuBuffer
• com.mojang.renderpearl.api.commands.CommandEncoder
• com.mojang.renderpearl.api.device.GpuDevice
• com.mojang.renderpearl.api.pipeline.BindGroupLayout
• com.mojang.renderpearl.api.pipeline.BindGroupLayout.Builder
• com.mojang.renderpearl.api.pipeline.RenderPipeline
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Builder
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Snippet
• com.mojang.renderpearl.api.pipeline.UniformType
• 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.PictureInPictureRendererRegistry
• net.fabricmc.fabric.api.client.rendering.v1.PictureInPictureRendererRegistry.Context
• net.fabricmc.fabric.api.client.rendering.v1.PictureInPictureRendererRegistry.Factory
• 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.CollectSubmits
• net.fabricmc.fabric.api.client.screen.v1.Screens
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.event.lifecycle.v1.CommonLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.CommonLifecycleEvents.TagsLoaded
• net.fabricmc.fabric.api.event.player.AttackBlockCallback
• net.fabricmc.fabric.api.event.player.AttackEntityCallback
• net.fabricmc.fabric.api.event.player.UseBlockCallback
• net.fabricmc.fabric.api.event.player.UseEntityCallback
• net.minecraft.SharedConstants
• net.minecraft.WorldVersion
• net.minecraft.client.InputType
• net.minecraft.client.Options
• net.minecraft.client.User
• and 82 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

Client-side mod for working with maps: editing images and converting them to mapart format, generating .nbt files, saving maps from the world as .png files, and other features

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file maparthelper-0.14.1+mc26.3.jar. The scan reads the mod's classes; it does not run them.