Freestyle Libre MCP Server

An MCP (Model Context Protocol) server that gives Claude access to Abbott Freestyle Libre CGM (continuous glucose monitor) data.

Supported providers

Provider	Auth	Cost	Notes
libreview (default)	Email + password	Free	Unofficial LibreView/LibreLinkUp API
terra	API key	Paid	Terra API (tryterra.co)
thryve	API key + OAuth token	Paid	Thryve health platform

Quick start (LibreView — recommended)

The LibreLinkUp API is designed for follower/carer accounts — accounts that have been invited to view a patient's glucose data. You'll need two LibreView accounts:

1. Your patient account (the one linked to your sensor)
2. A follower account (a second account you invite via the LibreLinkUp app)

Use the follower account's credentials in the MCP config.

1. Install

npm install
npm run build

2. Configure Claude Desktop

Edit your Claude Desktop config file, using the full path to your Node.js binary (Node 18+ required). The config location depends on your OS:

OS	Path
macOS	~/Library/Application Support/Claude/claude_desktop_config.json
Windows	%APPDATA%\Claude\claude_desktop_config.json
Linux	~/.config/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "freestyle-libre": {
      "command": "/path/to/node",
      "args": ["/absolute/path/to/freestyle-libre/dist/index.js"],
      "env": {
        "LIBRE_PROVIDER": "libreview",
        "LIBRE_REGION": "EU",
        "LIBRE_EMAIL": "your-follower@email.com",
        "LIBRE_PASSWORD": "yourpassword"
      }
    }
  }
}

Replace the paths and credentials accordingly. The server auto-detects regional API endpoints (e.g. eu2) at login, so LIBRE_REGION just needs to be the base region for your account:

Region	Value
Europe	EU (default)
United States	US
Australia	AU
Asia-Pacific	AP
Japan	JP
Germany	DE
Global	global

3. Restart Claude Desktop

The server authenticates automatically on startup — no login step needed in the chat.

---

Available tools

Tool	Description
get_connections	List patient connections on the account
get_current_glucose	Fetch the latest glucose reading
get_glucose_history	Fetch historical readings (1–24 hours)
get_glucose_summary	24-hour summary: TIR, avg, min/max, std dev

Example prompts

• "What's my current glucose level?"
• "Show me my glucose history for the past 6 hours"
• "Give me a summary of my glucose control today"
• "Was I in range more than 70% of the time yesterday?"

---

Terra API setup

1. Sign up at tryterra.co and create an application
2. Connect a LibreView account via the Terra Connect widget to get a user_id
3. Configure Claude Desktop:

{
  "mcpServers": {
    "freestyle-libre": {
      "command": "/path/to/node",
      "args": ["/absolute/path/to/freestyle-libre/dist/index.js"],
      "env": {
        "LIBRE_PROVIDER": "terra",
        "TERRA_API_KEY": "your-api-key",
        "TERRA_DEV_ID": "your-dev-id"
      }
    }
  }
}

---

Thryve API setup

1. Contact thryve.health for API access
2. Direct users through Thryve's OAuth flow to connect their LibreView account
3. Configure Claude Desktop:

{
  "mcpServers": {
    "freestyle-libre": {
      "command": "/path/to/node",
      "args": ["/absolute/path/to/freestyle-libre/dist/index.js"],
      "env": {
        "LIBRE_PROVIDER": "thryve",
        "THRYVE_API_KEY": "your-api-key",
        "THRYVE_API_SECRET": "your-api-secret",
        "THRYVE_ACCESS_TOKEN": "user-oauth-access-token"
      }
    }
  }
}

---

Development

npm run dev      # watch mode — recompiles on save
npm run build    # one-off compile
npm start        # run the compiled server

The server communicates over stdio, which is the standard transport for local MCP servers used by Claude Desktop.

---

Disclaimer

The libreview provider uses a community-documented, reverse-engineered API that powers Abbott's LibreLinkUp app. It is not an official Abbott API and may change without notice. Use it responsibly and in accordance with Abbott's terms of service.