Show HN: Node.js Debugger MCP. Run and debug long-lived apps with Claude Code

2 chw9e 0 6/20/2025, 6:50:23 PM
I've been experimenting with ways to make Claude Code more useful for real development workflows, especially when dealing with long-running processes like dev servers.

This is an open-source MCP server that helps AI coding agents manage and debug live Node.js processes. It supports:

- Starting and stopping Node.js scripts without blocking the terminal

- Attaching to the Chrome DevTools Protocol for real debugging

- Setting breakpoints, stepping through code, and evaluating expressions

- Managing multiple processes and debug sessions across time

You can use it to reliably launch scripts like npm run dev, pause at the first line, attach a debugger, and walk through your code step by step, all from within Claude Code in the terminal.

GitHub: https://github.com/qckfx/node-debugger-mcp

Would appreciate any feedback or ideas. If you're building with Claude Code or working on your own AI coding tools, happy to help you get started.

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