This is the interface I landed on to make pluggable 'session hosts': https://github.com/ggoodman/mcp-server-go/blob/b8216cc1830ad78928589932cf5a1a78dd25e2b6/ses

This is the interface I landed on to make pluggable 'session hosts': https://github.com/ggoodman/mcp-server-go/blob/b8216cc1830ad78928589932cf5a1a78dd25e2b6/sessions/host.go#L16-L76 https://github.com/ggoodman/mcp-server-go/blob/b8216cc1830ad... It goes a tad beyond the spec minimum because I think it's valuable to be able to persist some small KV data with sessions and users.