Update Beacon

Evidence

Ran on Kiln's test stand (2026-11-04): UpdateBeaconFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/server/permissions/Permission.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarting
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStopping
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndTick
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.fabricmc.loader.api.ModContainer
• net.fabricmc.loader.api.Version
• net.fabricmc.loader.api.metadata.ModMetadata
• net.fabricmc.loader.api.metadata.ModOrigin
• net.fabricmc.loader.api.metadata.ModOrigin.Kind
• net.minecraft.SharedConstants
• net.minecraft.WorldVersion
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.SharedSuggestionProvider
• net.minecraft.network.chat.ClickEvent
• net.minecraft.network.chat.ClickEvent.OpenUrl
• net.minecraft.network.chat.Style
• net.minecraft.server.MinecraftServer
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.permissions.Permission
• net.minecraft.server.permissions.Permission.HasCommandLevel
• net.minecraft.server.permissions.PermissionLevel
• net.minecraft.server.permissions.PermissionSet
• net.minecraft.server.permissions.Permissions
• net.minecraft.server.players.NameAndId
• net.minecraft.server.players.PlayerList
• FabricLoader.getAllMods()
• FabricLoader.getModContainer()
• MutableComponent.withStyle()
• ServerPlayer.getGameProfile()
• ServerPlayer.permissions()

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

Automatically checks for and updates your servers mods - highly configurable

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file UpdateBeacon-fabric-26.3-1.2.0.jar. The scan reads the mod's classes; it does not run them.