MCP gmail server: Server disconnected error for guMCP on Claude desktop

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1

Hi! So I’ve generated a guMCP API Key, and edited the Claude desktop config json with the instructions in the gmail mcp page but i keep getting this error when I open Claude desktop: “MCP gmail-server: Server disconnected. For troubleshooting guidance, please visit our debugging documentation.”
It worked for a few hours when I first set it up, but i’ve been getting this error ever since then.
This is not isolated to just the gmail mcp, but any guMCP i set up.

2

Hey @Ashish! If you’re reporting an issue with a flow or an error in a run, please include the run link and make sure it’s shareable so we can take a look.

  1. Find your run link on the history page. Format: https://www.gumloop.com/pipeline?run_id={{your_run_id}}&workbook_id={{workbook_id}}

  2. Make it shareable by clicking “Share” → ‘Anyone with the link can view’ in the top-left corner of the flow screen.
    GIF guide

  3. Provide details about the issue—more context helps us troubleshoot faster.

You can find your run history here: https://www.gumloop.com/history

3

Hey @Ashish – Would you be able to share a screenshot if possible? I’ll also loop in my colleague here that leads the MCP development.

4

Hi @Wasay-Gumloop - I managed to solve the issue. It was a broken cache that required purging.
I ran:
npm cache clean --force
npx clear-npx-cache

and when i re-loaded Claude desktop the MCP worked fine, so the broken npx temp folder was the culprit.

5

Got it, thank you for the update! :slight_smile:

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