MCP server not starting? Do this!
If the MCP command throws an error like “permission denied” — for example, when running the Chrome DevTools MCP server with
npx -y chrome-devtools-mcp@latest — it might help to clear the npx cache (that’s what worked for me):
rm -rf /Users/userName/.npm/_npx && npx clear-npx-cache
In my case, it worked right away afterwards. How did I figure it out? I asked the AI (Cursor) — and in agent mode, Cursor even executed it automatically.
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Stephan Haewß
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MCP server not starting? Do this!
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