Tesseract

Evidence

Ran on Kiln's test stand (2026-11-04): Tesseract did not start: java.lang.NoClassDefFoundError: net/minecraft/world/level/block/EntityBlock; TesseractClient did not start: java.lang.NoClassDefFoundError: net/minecraft/world/level/block/entity/BlockEntityType.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.authlib.GameProfile
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.blaze3d.vertex.PoseStack.Pose
• com.mojang.blaze3d.vertex.VertexConsumer
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLevelEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLevelEvents.Load
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndTick
• net.fabricmc.fabric.api.lookup.v1.block.BlockApiCache
• net.fabricmc.fabric.api.lookup.v1.block.BlockApiLookup
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.fabricmc.fabric.api.transfer.v1.fluid.FluidStorage
• net.fabricmc.fabric.api.transfer.v1.item.ItemStorage
• net.fabricmc.fabric.api.transfer.v1.storage.Storage
• net.fabricmc.fabric.api.transfer.v1.storage.StoragePreconditions
• net.fabricmc.fabric.api.transfer.v1.storage.TransferVariant
• net.minecraft.client.StringSplitter
• net.minecraft.client.input.MouseButtonInfo
• net.minecraft.client.renderer.SubmitNodeCollector
• net.minecraft.client.renderer.SubmitNodeCollector.CustomGeometryRenderer
• net.minecraft.client.renderer.rendertype.RenderTypes
• net.minecraft.client.resources.DefaultPlayerSkin
• net.minecraft.client.resources.SkinManager
• net.minecraft.core.ClientAsset
• net.minecraft.core.ClientAsset.Texture
• net.minecraft.core.UUIDUtil
• net.minecraft.nbt.CompoundTag
• net.minecraft.nbt.NbtIo
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.chat.Style
• net.minecraft.server.MinecraftServer
• net.minecraft.server.Services
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.permissions.PermissionSet
• net.minecraft.server.permissions.Permissions
• net.minecraft.server.players.PlayerList
• net.minecraft.server.players.ProfileResolver
• net.minecraft.util.StringUtil
• net.minecraft.world.entity.player.PlayerSkin
• and 23 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

Tesseract allows you to transport Items, Fluid and Energy

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file tesseract-1.0.39-fabric-mc26.3.jar. The scan reads the mod's classes; it does not run them.