Next.js DevTools MCP Server: Setup for Claude Code, Cursor and Other Apps

• Finds your running Next.js dev servers

  Scans common ports for running Next.js 16+ dev servers and lists the tools each one offers.

  Try: “Which Next.js dev servers are running?”

  Network · nextjs_index

• Reads live errors, routes and logs from your app

  Calls one of the dev server's built-in tools, such as current errors, page routes, project info or logs. Run the index tool first to see what is available.

  Try: “What errors does my Next.js app have right now?”

  Network · nextjs_call

• Points to the docs for your Next.js version

  Does not download docs. It finds the docs bundled with your installed Next.js and tells the assistant where to read them.

  Try: “Where are the docs for the Next.js version I use?”

  Files · nextjs_docs

• Sets up browser testing

  Checks whether the agent-browser tool is installed and returns either how to use it or how to install it. It does not drive the browser itself.

  Try: “Help me test this page in a browser.”

  Runs code · browser_eval

Watch out for

• It sends anonymous usage statistics

  The README says it records which tools you call, error events and basic system info, not your code. Set NEXT_TELEMETRY_DISABLED=1 to turn it off.

• It can call any tool your dev server exposes

  The call tool runs whatever runtime tool your Next.js version offers on your local server. Read the list it shows first.

Security advisories