MCP user resolution not working 6.1.0rc1

[rhysemmerson]

Bug description

I'm trying to get the MCP server working but when calling tools I get this error.

g.user was not set by JWT middleware (MCP_AUTH_ENABLED=True, JWT keys configured=True)

I'm using JWT auth with a shared secret. I've put the user's username into the JWT payload as suggested in the docs.

Looking through the code I can see this function which appears to implement the logic the docs mention, but it doesn't appear to be called anywhere. So I'm at a dead end trying to deubg this.

https://github.com/apache/superset/blob/6.1.0rc1/superset/mcp_service/mcp_config.py#L283

Screenshots/recordings

No response

Superset version

master / latest-dev

Python version

3.11

Node version

16

Browser

Chrome

Additional context

No response

Checklist

• I have searched Superset docs and Slack and didn't find a solution to my problem.
• I have searched the GitHub issue tracker and didn't find a similar bug report.
• I have checked Superset's logs for errors and if I found a relevant Python stacktrace, I included it here as text in the "additional context" section.