We've been keeping a close eye on this topic: https://github.com/modelcontextprotocol/specification/discus...

The options being considered to do this are:

1) maintain a session token mapping to the state -- which is still statefulness

2) create a separate stateless MCP protocol and reimplement -- agents.json is already the stateless protocol

3) reimplement every MCP as stateless and abandon the existing stateful MCP initiative

As you can tell, we're not bullish on any of these.