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mcp-debugger

MCP server · by debugmcp

Developer Tools npmDocker v0.25.1

Step-through debugging for AI agents: breakpoints, stepping and live variables in nine languages

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Install

Run one of the commands below, then add the client config underneath.

npmnpx -y @debugmcp/mcp-debugger
Dockerdocker run -i --rm docker.io/debugmcp/mcp-debugger:0.25.1

Client configuration

Paste into Claude Desktop, Cursor (mcp.json), VS Code or any MCP client, then restart the client.

mcpServers{
  "mcpServers": {
    "mcp-debugger-2": {
      "command": "npx",
      "args": [
        "-y",
        "@debugmcp/mcp-debugger"
      ]
    }
  }
}

About this server

mcp-debugger is listed in the Developer Tools category of the MCPNav directory. It is distributed as npm, Docker and can be loaded by any client that speaks the Model Context Protocol.

Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.

Frequently asked questions

What is the mcp-debugger MCP server?

mcp-debugger is an MCP server by debugmcp. Step-through debugging for AI agents: breakpoints, stepping and live variables in nine languages

How do I install mcp-debugger?

Install it with: npx -y @debugmcp/mcp-debugger. Then add the JSON config to your client's MCP settings and restart the client.

Is mcp-debugger free to use?

The MCP server itself is free to install. The source is public on https://github.com/debugmcp/mcp-debugger. Any third-party API it calls (such as a search or maps API) may require its own key and billing.

Which clients support mcp-debugger?

Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.