SeedMapper

Evidence

Ran on Kiln's test stand (2026-11-04): SeedMapper did not start: java.lang.NoSuchMethodError: 'java.util.Optional net.fabricmc.loader.api.FabricLoader.getModContainer(java.lang.String)'.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.platform.NativeImage
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.blaze3d.vertex.PoseStack.Pose
• com.mojang.blaze3d.vertex.VertexConsumer
• com.mojang.renderpearl.api.pipeline.ColorTargetState
• com.mojang.renderpearl.api.pipeline.CompareOp
• com.mojang.renderpearl.api.pipeline.DepthStencilState
• com.mojang.renderpearl.api.pipeline.RenderPipeline
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Builder
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Snippet
• 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.rendering.v1.RenderStateDataKey
• net.fabricmc.fabric.api.client.rendering.v1.level.LevelExtractionContext
• net.fabricmc.fabric.api.client.rendering.v1.level.LevelExtractionEvents
• net.fabricmc.fabric.api.client.rendering.v1.level.LevelExtractionEvents.EndExtraction
• 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.BeforeGizmos
• net.fabricmc.loader.api.ModContainer
• net.minecraft.Optionull
• net.minecraft.SharedConstants
• net.minecraft.WorldVersion
• net.minecraft.client.Camera
• net.minecraft.client.GameNarrator
• net.minecraft.client.KeyboardHandler
• net.minecraft.client.gui.GuiGraphicsExtractor.ScissorStack
• net.minecraft.client.gui.Hud
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.CreateNarration
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.gui.components.ChatComponent
• net.minecraft.client.gui.components.EditBox
• net.minecraft.client.gui.components.PlayerFaceExtractor
• net.minecraft.client.gui.components.Tooltip
• net.minecraft.client.gui.render.TextureSetup
• net.minecraft.client.gui.screens.inventory.tooltip.ClientTooltipComponent
• net.minecraft.client.gui.screens.inventory.tooltip.DefaultTooltipPositioner
• net.minecraft.client.input.KeyEvent
• and 80 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

In-game Minecraft Fabric mod that allows you to do various things with the world seed.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file seedmapper-2.38.0.jar. The scan reads the mod's classes; it does not run them.