Reliable Advancements

Evidence

Ran on Kiln's test stand (2026-11-04): ReliableAdvancementsFabric did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/networking/v1/PayloadTypeRegistry; ReliableAdvancementsFabricClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.platform.Window
• net.fabricmc.api.EnvType
• 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.screen.v1.ScreenEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.AfterInit
• net.fabricmc.fabric.api.client.screen.v1.Screens
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.minecraft.advancements.Advancement
• net.minecraft.advancements.AdvancementNode
• net.minecraft.advancements.AdvancementRequirements
• net.minecraft.advancements.AdvancementRewards
• net.minecraft.advancements.AdvancementTree
• net.minecraft.advancements.AdvancementType
• net.minecraft.advancements.CriterionProgress
• net.minecraft.advancements.DisplayInfo
• net.minecraft.advancements.TreeNodePosition
• net.minecraft.advancements.predicates.DamagePredicate
• net.minecraft.advancements.predicates.DamageSourcePredicate
• net.minecraft.advancements.predicates.ItemPredicate
• net.minecraft.advancements.predicates.LocationPredicate
• net.minecraft.advancements.predicates.entity.EntityPredicate
• net.minecraft.advancements.predicates.entity.EntitySubPredicate
• net.minecraft.advancements.triggers.CriterionTrigger
• net.minecraft.client.GameNarrator
• net.minecraft.client.KeyboardHandler
• net.minecraft.client.MouseHandler
• net.minecraft.client.Options
• net.minecraft.client.StringSplitter
• net.minecraft.client.gui.components.AbstractButton
• net.minecraft.client.gui.components.AbstractWidget
• net.minecraft.client.gui.components.Button
• 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

In-game advancement editing and improvements to the advancement screen!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file reliable_advancements-6.3.3+26.3-fabric.jar. The scan reads the mod's classes; it does not run them.