ViaVersion

What it needs from Kiln

• io.netty.buffer.ByteBuf
• io.netty.buffer.ByteBufAllocator
• io.netty.buffer.ByteBufInputStream
• io.netty.buffer.ByteBufOutputStream
• io.netty.buffer.Unpooled
• io.netty.channel.Channel
• io.netty.channel.ChannelFuture
• io.netty.channel.ChannelHandler
• io.netty.channel.ChannelHandler.Sharable
• io.netty.channel.ChannelHandlerContext
• io.netty.channel.ChannelInboundHandler
• io.netty.channel.ChannelInitializer
• io.netty.channel.ChannelPipeline
• io.netty.channel.ChannelPromise
• io.netty.channel.EventLoop
• io.netty.handler.codec.ByteToMessageDecoder
• io.netty.handler.codec.CodecException
• io.netty.handler.codec.DecoderException
• io.netty.handler.codec.EncoderException
• io.netty.handler.codec.MessageToByteEncoder
• io.netty.handler.codec.MessageToMessageCodec
• io.netty.handler.codec.MessageToMessageDecoder
• io.netty.handler.codec.MessageToMessageEncoder
• io.netty.util.ResourceLeakDetector
• io.netty.util.ResourceLeakDetector.Level
• BiMap.containsKey()
• BiMap.get()
• BiMap.size()

On the roadmap: Minecraft's libraries and client API (0.2)

In the author's words

Allow newer Java Edition clients to connect to older servers.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file ViaVersion-5.12.3-SNAPSHOT.jar. The scan reads the mod's classes; it does not run them.