Willys MCP

MCP server for Willys.se that lets you search products, manage your cart, and set up home delivery through an AI assistant.

Available tools: search_groceries, add_to_cart, view_cart, remove_from_cart, get_available_time_slots, select_delivery_time, and proceed_to_checkout. Pretty self-explanatory from the names.

Setup

Build with make build.

The server needs your Willys credentials to authenticate. It uses headless browser automation to log in (takes about 10 seconds on startup) since Willys doesn't expose a straightforward API for this. Once authenticated, it extracts the session cookies and uses those for API requests.

Add it to your MCP client config (Claude Desktop, etc.):

{
  "mcpServers": {
    "willys": {
      "command": "/path/to/willys-mcp",
      "env": {
        "WILLYS_USERNAME": "your-personnummer-or-willys-plus-number",
        "WILLYS_PASSWORD": "your-password"
      }
    }
  }
}

You'll need:

• WILLYS_USERNAME: Your Swedish personnummer (YYYYMMDDXXXX) or Willys Plus number
• WILLYS_PASSWORD: Your account password

On startup, it launches a headless browser, handles cookie consent, logs in, grabs the session cookies, and starts serving MCP requests.