It definitely works in bun just fine. I have a production built mcp server with auth running under bun. Now if you convert the request / response types to nati

It definitely works in bun just fine. I have a production built mcp server with auth running under bun. Now if you convert the request / response types to native bun server, it can be finicky. But it works fine using express under bun with the official protocol implementation for typescript. Actually writing a book about this too and will be using bun for it https://leanpub.com/creatingmcpserverswithoauth https://leanpub.com/creatingmcpserverswithoauth