RFTools Builder

Evidence

Ran on Kiln's test stand (2026-11-04): RFToolsBuilder did not start: java.lang.NoSuchFieldError: Class net.minecraft.core.registries.Registries does not have member field 'net.minecraft.resources.ResourceKey BLOCK_ENTITY_TYPE'; ClientSetup did not start: java.lang.NoClassDefFoundError: net/minecraft/network/FriendlyByteBuf.

What it needs from Kiln

• an access widener
• com.mojang.blaze3d.platform.Window
• com.mojang.blaze3d.systems.RenderSystem
• com.mojang.blaze3d.systems.RenderSystem.AutoStorageIndexBuffer
• com.mojang.blaze3d.vertex.BufferBuilder
• com.mojang.blaze3d.vertex.ByteBufferBuilder
• com.mojang.blaze3d.vertex.MeshData
• com.mojang.blaze3d.vertex.MeshData.DrawState
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.blaze3d.vertex.PoseStack.Pose
• com.mojang.blaze3d.vertex.QuadInstance
• com.mojang.blaze3d.vertex.VertexConsumer
• com.mojang.renderpearl.api.buffers.GpuBuffer
• com.mojang.renderpearl.api.buffers.GpuBufferSlice
• com.mojang.renderpearl.api.device.GpuDevice
• com.mojang.renderpearl.api.pipeline.ColorTargetState
• com.mojang.renderpearl.api.pipeline.DepthStencilState
• com.mojang.renderpearl.api.pipeline.PrimitiveTopology
• com.mojang.renderpearl.api.pipeline.RenderPipeline
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Builder
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Snippet
• com.mojang.renderpearl.api.vertex.VertexFormat
• net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry
• net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry.Builder
• net.fabricmc.fabric.api.client.model.loading.v1.BlockStateResolver
• net.fabricmc.fabric.api.client.model.loading.v1.BlockStateResolver.Context
• net.fabricmc.fabric.api.client.model.loading.v1.ModelLoadingPlugin
• net.fabricmc.fabric.api.client.model.loading.v1.ModelLoadingPlugin.Context
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.Context
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.client.renderer.v1.Renderer
• net.fabricmc.fabric.api.client.renderer.v1.mesh.MutableQuadView
• net.fabricmc.fabric.api.client.renderer.v1.mesh.QuadAtlas
• net.fabricmc.fabric.api.client.renderer.v1.model.FabricBlockStateModel
• net.fabricmc.fabric.api.client.renderer.v1.sprite.SpriteFinder
• net.fabricmc.fabric.api.client.rendering.v1.BlockColorRegistry
• net.fabricmc.fabric.api.client.rendering.v1.FeatureRendererRegistry
• 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
• and 81 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

RFTools addon mod adding the builder, shield system and much more

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file rftoolsbuilder-fabric-26.3-10.0.0-fabric.jar. The scan reads the mod's classes; it does not run them.