Useless Reptile

Evidence

Ran on Kiln's test stand (2026-11-04): UselessReptile did not start: java.lang.NoClassDefFoundError: net/fabricmc/loader/api/entrypoint/PreLaunchEntrypoint; UselessReptileClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/renderer/item/properties/select/SelectItemModelProperties.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.blaze3d.vertex.PoseStack.Pose
• com.mojang.blaze3d.vertex.VertexConsumer
• com.mojang.math.Axis
• com.mojang.renderpearl.api.pipeline.BlendFunction
• com.mojang.renderpearl.api.pipeline.ColorTargetState
• com.mojang.renderpearl.api.pipeline.RenderPipeline
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Builder
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Snippet
• io.netty.buffer.ByteBuf
• 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.creativetab.v1.FabricCreativeModeTab
• net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents.Leave
• net.fabricmc.fabric.api.event.EventFactory
• net.fabricmc.fabric.api.event.lifecycle.v1.CommonLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.CommonLifecycleEvents.TagsLoaded
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.StartLevelTick
• net.fabricmc.fabric.api.event.registry.DynamicRegistries
• net.fabricmc.fabric.api.event.registry.DynamicRegistries.SyncOption
• net.fabricmc.fabric.api.event.registry.FabricRegistryBuilder
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.PlayerLookup
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.object.builder.v1.entity.FabricDefaultAttributeRegistry
• net.fabricmc.fabric.api.object.builder.v1.entity.FabricEntityDataRegistry
• net.fabricmc.fabric.api.tag.convention.v2.ConventionalFluidTags
• net.fabricmc.fabric.api.tag.convention.v2.ConventionalItemTags
• net.fabricmc.fabric.impl.client.rendering.EntityRendererRegistryImpl
• net.fabricmc.loader.api.entrypoint.PreLaunchEntrypoint
• net.minecraft.advancements.triggers.ConsumeItemTrigger
• net.minecraft.advancements.triggers.CriteriaTriggers
• net.minecraft.client.CameraType
• net.minecraft.client.GameNarrator
• 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

Adds dragons that you can tame (and sometimes ride)

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file useless-reptile-0.14.3-26.3.jar. The scan reads the mod's classes; it does not run them.