mcp-nodejs-debugger

Overview

The MCP Node.js Debugger provides an interface for AI-powered development tools like Cursor and Claude Code to interact with Node.js applications at runtime. It enables developers to debug their code by setting breakpoints, inspecting variables, and executing code directly within the Node.js environment. This server connects to Node.js applications running in debug mode and exposes debugging capabilities through the Model Context Protocol.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• nodejs_inspect

  Execute JavaScript code in the Node.js runtime environment to inspect variables and objects

  Try:Check the value of the mongoose connection stateTry:Log the current environment variablesTry:Inspect the user object in the request
• set_breakpoint

  Set a breakpoint in the Node.js application at a specific file and line number

  Try:Set a breakpoint at line 35 in app.jsTry:Break when the user function is calledTry:Pause execution when the error occurs
• list_breakpoints

  List all currently set breakpoints in the Node.js application

  Try:Show me all active breakpointsTry:List breakpoints in index.jsTry:Check if there are any breakpoints set

Comparable tools

Installation

{
  "mcpServers": {
    "nodejs-debugger": {
      "command": "npx",
      "args": ["@hyperdrive-eng/mcp-nodejs-debugger"]
    }
  }
}

claude mcp add nodejs-debugger npx @hyperdrive-eng/mcp-nodejs-debugger

{
  "mcpServers": {
    "nodejs-debugger": {
      "command": "npx",
      "args": ["@hyperdrive-eng/mcp-nodejs-debugger"]
    }
  }
}

FAQ

What Node.js versions are supported?

The debugger works with any Node.js version that supports the debugging protocol (the --inspect flag).

Can I debug applications running on remote servers?

Yes, as long as you can connect to the Node.js debugging port (default 9229) from where you're running Claude/Cursor.

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