Datapack Sync

Evidence

Ran on Kiln's test stand (2026-11-04): WorldAccess did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload; WorldAccessClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• 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.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.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.minecraft.client.multiplayer.ServerData
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
• net.minecraft.server.MinecraftServer
• net.minecraft.server.permissions.LevelBasedPermissionSet
• net.minecraft.server.permissions.PermissionLevel
• org.apache.commons.codec.DecoderException
• org.apache.commons.codec.binary.Hex
• org.apache.commons.io.FileUtils
• Minecraft.execute()
• Minecraft.getCurrentServer()
• ServerPlayer.nameAndId()

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3)

In the author's words

This mod is intended to let admins remotely make changes to the datapack files on their server.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file worldaccess-2.3+26.3.jar. The scan reads the mod's classes; it does not run them.