J-Link MCP

MCP server · by Klievan

Developer Tools npm v0.8.0

Debug embedded firmware on real hardware: J-Link probes, Cortex-M faults, RTT logs, GDB.

View source ↗ Website ↗ Generate config for multiple servers More servers

Install

Pin version registry version 0.8.0

npm
npx -y jlink-mcp

npm
npx -y jlink-mcp@0.8.0

Setup by client

Pick your client — the config below is generated for this server (local stdio). Copy respects the “Pin version” switch above.

claude_desktop_config.json

{
  "mcpServers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp"
      ],
      "env": {
        "JLINK_DEVICE": "<YOUR_JLINK_DEVICE>"
      }
    }
  }
}

{
  "mcpServers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp@0.8.0"
      ],
      "env": {
        "JLINK_DEVICE": "<YOUR_JLINK_DEVICE>"
      }
    }
  }
}

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env JLINK_DEVICE=<YOUR_JLINK_DEVICE> jlink-mcp -- npx -y jlink-mcp

claude mcp add --env JLINK_DEVICE=<YOUR_JLINK_DEVICE> jlink-mcp -- npx -y jlink-mcp@0.8.0

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp"
      ],
      "env": {
        "JLINK_DEVICE": "<YOUR_JLINK_DEVICE>"
      }
    }
  }
}

{
  "mcpServers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp@0.8.0"
      ],
      "env": {
        "JLINK_DEVICE": "<YOUR_JLINK_DEVICE>"
      }
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp"
      ],
      "env": {
        "JLINK_DEVICE": "<YOUR_JLINK_DEVICE>"
      }
    }
  }
}

{
  "servers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp@0.8.0"
      ],
      "env": {
        "JLINK_DEVICE": "<YOUR_JLINK_DEVICE>"
      }
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp"
      ],
      "env": {
        "JLINK_DEVICE": "<YOUR_JLINK_DEVICE>"
      }
    }
  }
}

{
  "mcpServers": {
    "jlink-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "jlink-mcp@0.8.0"
      ],
      "env": {
        "JLINK_DEVICE": "<YOUR_JLINK_DEVICE>"
      }
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

JLINK_DEVICE required — Target device name, exactly as J-Link spells it (e.g. nRF52840_XXAA, STM32F407VG). Use the search_devices tool to find it.
JLINK_SERIAL — Serial number of a specific probe, when more than one is attached.
SVD_PATH — CMSIS-SVD file for the target. Without it, peripheral reads are undecoded hex.
JLINK_RTT_ADDR — Address of the firmware's _SEGGER_RTT symbol. Lets RTT survive a reset or flash.

GitHub

⭐ 35 stars · 最近更新于 20 天前 · MIT license

About this server

jlink mcp Give AI hands to touch silicon. An MCP server that lets LLMs debug embedded devices through SEGGER J Link probes.…

Summary from the project README — github.com/Klievan/jlink-mcp

Distributed as npm, listed under Developer Tools. Review our MCP security guide before granting access to real data.

Frequently asked questions

What does the J-Link MCP MCP server do?

jlink mcp Give AI hands to touch silicon. An MCP server that lets LLMs debug embedded devices through SEGGER J Link probes.

How do I install J-Link MCP?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is J-Link MCP free to use?

The MCP server itself is free to install. The source is public on https://github.com/Klievan/jlink-mcp. Any third-party service it calls may require its own API key and account.

Which clients support J-Link MCP?

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

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