Traveler's Backpack

Evidence

Ran on Kiln's test stand (2026-11-04): TravelersBackpack did not start: java.lang.NoClassDefFoundError: org/apache/logging/log4j/LogManager; TravelersBackpackClient did not start: java.lang.NoClassDefFoundError: net/minecraft/world/inventory/MenuType.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.authlib.GameProfile
• com.mojang.blaze3d.platform.InputConstants.Key
• com.mojang.blaze3d.platform.Window
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.math.Axis
• com.mojang.math.Transformation
• com.mojang.renderpearl.api.pipeline.RenderPipeline
• net.fabricmc.api.EnvType
• net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry
• net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry.Builder
• net.fabricmc.fabric.api.blockgetter.v2.RenderDataBlockEntity
• 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.model.loading.v1.CustomUnbakedBlockStateModel
• net.fabricmc.fabric.api.client.model.loading.v1.ExtraModelKey
• net.fabricmc.fabric.api.client.model.loading.v1.ModelLoadingPlugin
• net.fabricmc.fabric.api.client.model.loading.v1.ModelLoadingPlugin.Context
• net.fabricmc.fabric.api.client.model.loading.v1.SimpleUnbakedExtraModel
• net.fabricmc.fabric.api.client.model.loading.v1.UnbakedModelDeserializer
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Join
• 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.render.fluid.v1.FluidRenderingRegistry
• net.fabricmc.fabric.api.client.renderer.v1.mesh.QuadEmitter
• net.fabricmc.fabric.api.client.rendering.v1.BlockColorRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ClientTooltipComponentCallback
• net.fabricmc.fabric.api.client.rendering.v1.EntityRendererRegistry
• net.fabricmc.fabric.api.client.rendering.v1.LivingEntityRenderLayerRegistrationCallback
• net.fabricmc.fabric.api.client.rendering.v1.LivingEntityRenderLayerRegistrationCallback.RegistrationHelper
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.AfterInit
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.BeforeInit
• net.fabricmc.fabric.api.client.screen.v1.ScreenKeyboardEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenKeyboardEvents.BeforeKeyPress
• net.fabricmc.fabric.api.client.screen.v1.ScreenMouseEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenMouseEvents.AfterMouseClick
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• and 82 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

Unique and upgradeable backpacks with customisation, Curios API/Trinkets integration and more!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file travelersbackpack-fabric-26.3-11.4.3.jar. The scan reads the mod's classes; it does not run them.