ProxyPortal

Evidence

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

What it needs from Kiln

• Mixin
• io.netty.buffer.Unpooled
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.RegistryFriendlyByteBuf
• 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.permissions.Permission
• net.minecraft.server.permissions.Permission.HasCommandLevel
• net.minecraft.server.permissions.PermissionLevel
• net.minecraft.server.permissions.PermissionSet

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

Build portals on a Fabric server to teleport between servers via Velocity.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file ProxyPortal-2.0.0+26.1.jar. The scan reads the mod's classes; it does not run them.