Cape Provider

Evidence

Ran on Kiln's test stand (2026-11-04): FabricCapes did not start: java.lang.NoClassDefFoundError: net/minecraft/client/gui/render/pip/PictureInPictureRenderer.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.authlib.GameProfile
• com.mojang.authlib.minecraft.SessionService
• com.mojang.blaze3d.Blaze3D
• com.mojang.blaze3d.platform.Lighting
• com.mojang.blaze3d.platform.Lighting.Entry
• com.mojang.blaze3d.platform.NativeImage
• com.mojang.blaze3d.systems.RenderSystem
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.math.Axis
• 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.loader.api.ModContainer
• net.fabricmc.loader.api.metadata.ContactInformation
• net.fabricmc.loader.api.metadata.CustomValue
• net.fabricmc.loader.api.metadata.CustomValue.CvArray
• net.fabricmc.loader.api.metadata.CustomValue.CvObject
• net.fabricmc.loader.api.metadata.CustomValue.CvType
• net.fabricmc.loader.api.metadata.ModMetadata
• net.minecraft.DefaultUncaughtExceptionHandlerWithName
• net.minecraft.SharedConstants
• net.minecraft.WorldVersion
• net.minecraft.client.User
• net.minecraft.client.gui.GuiGraphicsExtractor.ScissorStack
• net.minecraft.client.gui.components.AbstractWidget
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.gui.components.EditBox
• net.minecraft.client.gui.components.MultiLineTextWidget
• net.minecraft.client.gui.components.ScrollableLayout
• net.minecraft.client.gui.components.ScrollableLayout.ReserveStrategy
• net.minecraft.client.gui.layouts.HeaderAndFooterLayout
• net.minecraft.client.gui.layouts.LinearLayout
• net.minecraft.client.gui.render.pip.PictureInPictureRenderer
• net.minecraft.client.model.geom.EntityModelSet
• net.minecraft.client.model.geom.ModelLayers
• net.minecraft.client.model.geom.ModelPart
• net.minecraft.client.model.object.equipment.ElytraModel
• net.minecraft.client.model.player.PlayerModel
• and 35 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

Provides you with capes! You can choose from various providers or add your own

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file cape-provider-6.0.0-SNAPSHOT.jar. The scan reads the mod's classes; it does not run them.