Log files and more explicit error messages.

[RRDTIL]

I'm experimenting on OAuth connectivity and I started to recieve error 400 bad request. I modified the file /src/server/oauth/callback.ts, line 220 to just change the :

  } catch {

to

  } catch (error) {
    console.error('OAuth token exchange error:', error);

And reading the console I discovered that the underlying problem was actually : data: { error: 'exceeded_max_refresh_token_count' }

I find the error handling of OAuth very light, and the fact that tableau-mcp doesn't write log files eventhough I set the env var : ENABLE_SERVER_LOGGING=true is very bothering :/

[anyoung-tableau]

Hey @RRDTIL , thanks for the report, and yeah the error handling could be better here. Regarding ENABLE_SERVER_LOGGING, it's specifically for writing MCP notifications to disk. Since the agent is not yet connected to the MCP server during the OAuth flow, MCP notifications can't be sent.

Were you able to resolve the issue? I think this happens when you hit 50 connected clients and can delete them from your Account Settings page in the Tableau Web UI.