SessionID is blank / empty when read from mcp.ServerSession

[tylerwilliams]

Describe the bug

First off: Thanks for your hard work. I'm aware this is early days and not production ready yet. I may just be holding things wrong, but I expected mcp.ServerSession.ID() to return some kind of unique ID associated with a session, and instead it returns an empty string.

I'm after a session ID so that I can store some data on behalf of the user and reference it in later calls (write some files to a user-specific workspace and read them later for example)

To Reproduce
Steps to reproduce the behavior:

1. Run any of the SSE server demos.
2. Log the value of mcp.ServerSession.ID() from a tool handler function
3. Connect to the server using some agent, claude for example claude mcp add -t sse my_cool_mcp http://localhost:6270/sse, and trigger the tool

Expected behavior
Handler should print some unique session ID

Logs
N/A

Additional context
Thanks

[jba]

Thanks, that's a TODO in the code. Fixing now.

[jba]

SSE is deprecated and session IDs are not specified for it anyway. As you mentioned, you are OK dropping this request.