SignedVelocity

Evidence

Server-side mod: Kiln runs mods' code on Horizon's single-player server, not on dedicated servers.

What it needs from Kiln

• Mixin
• io.netty.buffer.ByteBuf
• net.fabricmc.api.DedicatedServerModInitializer
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Disconnect
• 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.network.FriendlyByteBuf
• net.minecraft.network.chat.ChatType
• net.minecraft.network.chat.ChatType.Bound
• net.minecraft.network.chat.LastSeenMessages
• net.minecraft.network.chat.LastSeenMessages.Update
• net.minecraft.network.chat.PlayerChatMessage
• 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.network.protocol.game.ServerboundChatCommandPacket
• net.minecraft.network.protocol.game.ServerboundChatCommandSignedPacket
• net.minecraft.server.MinecraftServer
• net.minecraft.server.network.ServerGamePacketListenerImpl

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

Allows you to cancel or modify messages or commands from Velocity without synchronization problems

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file SignedVelocity-Fabric-1.5.0.jar. The scan reads the mod's classes; it does not run them.