J-Link MCP

Overview

J-Link MCP is a Model Context Protocol (MCP) server: Debug embedded firmware on real hardware: J-Link probes, Cortex-M faults, RTT logs, GDB. Because it speaks the Model Context Protocol, AI assistants can use J-Link MCP as a set of callable tools instead of you copy-pasting between apps.

It runs locally: the npm package jlink-mcp speaks MCP over stdio on your machine. Configuration happens through environment variables — you'll need JLINK_DEVICE. The current release is v0.6.0, published under the MIT license, with source at Klievan/jlink-mcp on GitHub, where it has earned 25 stars.

On mcp.site, J-Link MCP sits in the Development category. Any MCP client can use it — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed among them — via the install snippets below. If you maintain J-Link MCP for Klievan, claim this listing to verify ownership, earn the Verified badge, and keep the details current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "j_link_mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp"
      ],
      "env": {
        "JLINK_DEVICE": "<jlink-device>"
      }
    }
  }
}

Requires JLINK_DEVICE