gCAPS

Evidence

Ran on Kiln's test stand (2026-11-04): Main did not start: java.lang.NoClassDefFoundError: net/minecraft/world/item/equipment/ArmorMaterials; MainClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/client/rendering/v1/ArmorRenderer.

What it needs from Kiln

• Mixin
• com.mojang.authlib.GameProfile
• com.mojang.blaze3d.vertex.PoseStack
• 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.ArmorRenderer
• 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.client.Options
• net.minecraft.client.gui.Hud
• net.minecraft.client.gui.screens.ChatScreen
• net.minecraft.client.model.HumanoidModel
• net.minecraft.client.model.geom.ModelPart
• net.minecraft.client.model.geom.PartPose
• net.minecraft.client.model.geom.builders.CubeDeformation
• net.minecraft.client.model.geom.builders.CubeListBuilder
• net.minecraft.client.model.geom.builders.LayerDefinition
• net.minecraft.client.model.geom.builders.MeshDefinition
• net.minecraft.client.model.geom.builders.PartDefinition
• net.minecraft.client.renderer.SubmitNodeCollector
• net.minecraft.client.renderer.entity.state.AvatarRenderState
• net.minecraft.client.renderer.entity.state.HumanoidRenderState
• net.minecraft.client.renderer.rendertype.RenderTypes
• net.minecraft.client.renderer.texture.OverlayTexture
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
• net.minecraft.server.MinecraftServer
• net.minecraft.server.players.PlayerList
• net.minecraft.util.ARGB
• net.minecraft.util.CommonColors
• net.minecraft.world.entity.EquipmentSlot
• net.minecraft.world.item.component.SwingAnimation
• net.minecraft.world.item.equipment.ArmorMaterials
• net.minecraft.world.item.equipment.ArmorType
• KeyMapping.saveString()
• and 13 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

Reimplementation of the Gboard CAPS in Minecraft

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file gcaps-fabric-1.1.1+26.3.jar. The scan reads the mod's classes; it does not run them.