Researcher

Evidence

Ran on Kiln's test stand (2026-11-04): Researcher did not start: java.lang.NoClassDefFoundError: net/fabricmc/loader/api/Version; ResearcherClient did not start: java.lang.NoSuchMethodError: 'java.lang.String net.minecraft.resources.Identifier.toLanguageKey(java.lang.String)'.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.platform.cursor.CursorType
• com.mojang.blaze3d.platform.cursor.CursorTypes
• 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.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Disconnect
• 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.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.event.EventFactory
• net.fabricmc.fabric.api.event.player.PlayerBlockBreakEvents
• net.fabricmc.fabric.api.event.player.PlayerBlockBreakEvents.After
• net.fabricmc.fabric.api.event.registry.FabricRegistryBuilder
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• 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.recipe.v1.sync.RecipeSynchronization
• net.fabricmc.fabric.api.recipe.v1.sync.SynchronizedRecipes
• net.fabricmc.fabric.api.resource.v1.ResourceLoader
• net.fabricmc.fabric.api.resource.v1.reloader.ResourceReloaderKeys
• net.fabricmc.fabric.impl.resource.FabricResourceReloader
• net.fabricmc.loader.api.ModContainer
• net.fabricmc.loader.api.Version
• net.fabricmc.loader.api.metadata.ModMetadata
• net.minecraft.advancements.predicates.BlockPredicate
• net.minecraft.advancements.predicates.CollectionContentsPredicate
• net.minecraft.advancements.predicates.CollectionCountsPredicate
• net.minecraft.advancements.predicates.CollectionCountsPredicate.Entry
• net.minecraft.advancements.predicates.CollectionPredicate
• net.minecraft.advancements.predicates.DamagePredicate
• net.minecraft.advancements.predicates.DamageSourcePredicate
• net.minecraft.advancements.predicates.DataComponentMatchers
• net.minecraft.advancements.predicates.DistancePredicate
• net.minecraft.advancements.predicates.EnchantmentPredicate
• net.minecraft.advancements.predicates.FluidPredicate
• net.minecraft.advancements.predicates.FoodPredicate
• net.minecraft.advancements.predicates.GameTypePredicate
• and 394 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

A data-driven research system inspired by Factorio.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file researcher-0.5.0-beta.2+26.3.jar. The scan reads the mod's classes; it does not run them.