RFTools Base

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

Evidence

Ran on Kiln's test stand (2026-11-04): RFToolsBase did not start: java.lang.NoClassDefFoundError: net/minecraft/world/inventory/MenuType; ClientSetup did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

an access widener
com.mojang.blaze3d.vertex.PoseStack
com.mojang.blaze3d.vertex.PoseStack.Pose
net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry
net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry.Builder
net.fabricmc.fabric.api.biome.v1.BiomeModifications
net.fabricmc.fabric.api.biome.v1.BiomeSelectors
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.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.creativetab.v1.FabricCreativeModeTab
net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndLevelTick
net.fabricmc.fabric.api.lookup.v1.block.BlockApiLookup
net.fabricmc.fabric.api.menu.v1.ExtendedMenuType
net.fabricmc.fabric.api.menu.v1.ExtendedMenuType.ExtendedFactory
net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
net.minecraft.advancements.triggers.InventoryChangeTrigger
net.minecraft.advancements.triggers.InventoryChangeTrigger.TriggerInstance
net.minecraft.client.Camera
net.minecraft.client.Options
net.minecraft.client.gui.screens.MenuScreens
net.minecraft.client.gui.screens.MenuScreens.ScreenConstructor
net.minecraft.client.renderer.GameRenderer
net.minecraft.client.renderer.SubmitNodeCollector
net.minecraft.client.renderer.SubmitNodeCollector.CustomGeometryRenderer
net.minecraft.client.renderer.blockentity.BlockEntityRenderer
net.minecraft.client.renderer.blockentity.BlockEntityRendererProvider
net.minecraft.client.renderer.blockentity.BlockEntityRendererProvider.Context
net.minecraft.client.renderer.blockentity.BlockEntityRenderers
net.minecraft.client.renderer.blockentity.state.BlockEntityRenderState
net.minecraft.client.renderer.feature.ModelFeatureRenderer
net.minecraft.client.renderer.feature.ModelFeatureRenderer.CrumblingOverlay
and 77 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 Base: base mod for all McJty tech mods

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file rftoolsbase-fabric-26.3-9.0.1-fabric.jar. The scan reads the mod's classes; it does not run them.

Reports from players

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