Weishaupt WEM Portal MCP Server

Control and monitor your Weishaupt heating system with AI assistants via the WEM Portal

Features

• Device Discovery - List all devices and modules from your WEM Portal account
• Live Parameters - Read temperatures, pressure, operating modes with current values
• Full Overview - Get a complete snapshot of your entire heating system in one call
• Write Parameters - Adjust target temperatures, operating modes, schedules
• Device Status - Check connection status of your devices
• Writable Filter - List only the parameters you can actually change
• Session Management - Automatic cookie-based auth with login lock for concurrent requests

Quick Start

Install via npx (recommended)

No installation needed. Configure your MCP client to run:

npx @disane-dev/weishaupt-wem-mcp-server

Install from source

git clone https://github.com/Disane87/weishaupt-wem-mcp-server.git
cd weishaupt-wem-mcp-server
npm install
npm run build

Configuration

{
  "mcpServers": {
    "weishaupt-wem": {
      "command": "npx",
      "args": ["-y", "@disane-dev/weishaupt-wem-mcp-server"],
      "env": {
        "WEM_USERNAME": "your_email@example.com",
        "WEM_PASSWORD": "your_password"
      }
    }
  }
}

claude mcp add weishaupt-wem -- npx -y @disane-dev/weishaupt-wem-mcp-server

{
  "mcpServers": {
    "weishaupt-wem": {
      "command": "node",
      "args": ["/path/to/wem-mcp/build/index.js"],
      "env": {
        "WEM_USERNAME": "your_email@example.com",
        "WEM_PASSWORD": "your_password"
      }
    }
  }
}

Environment Variables

Available Tools

[!TIP] Start with wem_get_devices to discover your deviceId, moduleIndex, and moduleType, then use wem_get_overview for a complete snapshot of your heating system.

Typical Workflow

1. wem_get_devices
   -> Returns devices with modules (WE0=heat generator, HZK0=heating circuit, WW0=hot water)

2. wem_get_overview (deviceId)
   -> Returns ALL modules with ALL parameters in one call

3. wem_get_writable_parameters (deviceId, moduleIndex, moduleType)
   -> Shows what you can adjust, with min/max ranges

4. wem_write_parameter (deviceId, moduleIndex, moduleType, parameterId, numericValue)
   -> Sets a writable parameter (e.g. target temperature)

Common Module Types

Development

Troubleshooting

[!NOTE] Make sure you can log in at wemportal.com before using this server.

Contributing

Contributions are welcome! Please open an issue or submit a pull request.

License

MIT - see LICENSE