LeashAll

Evidence

Ran on Kiln's test stand (2026-11-04): LeashAllFabric did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/attachment/v1/AttachmentRegistry; LeashAllFabricClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/networking/v1/PayloadTypeRegistry.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.vertex.PoseStack
• net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry
• net.fabricmc.fabric.api.attachment.v1.AttachmentRegistry.Builder
• net.fabricmc.fabric.api.attachment.v1.AttachmentSyncPredicate
• 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.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarting
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStopped
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Disconnect
• net.minecraft.client.Camera
• net.minecraft.client.renderer.GameRenderer
• net.minecraft.client.renderer.SubmitNodeCollector
• net.minecraft.client.renderer.entity.state.EntityRenderState
• net.minecraft.client.renderer.entity.state.EntityRenderState.LeashState
• net.minecraft.core.UUIDUtil
• net.minecraft.network.FriendlyByteBuf
• 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.network.ServerGamePacketListenerImpl
• net.minecraft.tags.BlockTags
• net.minecraft.world.entity.boss.enderdragon.EnderDragon
• net.minecraft.world.entity.boss.enderdragon.EnderDragonPart
• net.minecraft.world.entity.decoration.LeashFenceKnotEntity
• net.minecraft.world.entity.vehicle.boat.Boat
• net.minecraft.world.entity.vehicle.minecart.AbstractMinecart
• net.minecraft.world.item.component.SwingAnimation
• net.minecraft.world.level.LightLayer
• net.minecraft.world.level.gameevent.GameEvent
• net.minecraft.world.level.gameevent.GameEvent.Context
• net.minecraft.world.level.storage.LevelResource
• and 31 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

Allows you to attach leads to every living entity (even player) in the game.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file leashall-fabric-26.3-1.5.0.jar. The scan reads the mod's classes; it does not run them.