J-Link MCP

J-Link MCP is a local MCP server: Debug embedded firmware on real hardware: J-Link probes, Cortex-M faults, RTT logs, GDB. Install it from npm as jlink-mcp.

Claude CodeCodexAntigravity

commandprompt

Terminal

claude mcp add jlink-mcp -e JLINK_DEVICE=... -e JLINK_SERIAL=... -e SVD_PATH=... -e JLINK_RTT_ADDR=... -- npx -y jlink-mcp

Run in your project folder. Add --scope user to use it everywhere.

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp"
      ],
      "env": {
        "JLINK_DEVICE": "...",
        "JLINK_SERIAL": "...",
        "SVD_PATH": "...",
        "JLINK_RTT_ADDR": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

• Runtime: Node.js 18+ (runs with npx).
• MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over stdio.
• Environment variables: JLINK_DEVICE, JLINK_SERIAL, SVD_PATH, JLINK_RTT_ADDR