Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@weishaupt-wem-mcp-server show me an overview of my heating system"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Control and monitor your Weishaupt heating system with AI assistants via the WEM Portal
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
Related MCP server: victron-tcp
No installation needed. Configure your MCP client to run:
npx @disane-dev/weishaupt-wem-mcp-servergit clone https://github.com/Disane87/weishaupt-wem-mcp-server.git
cd weishaupt-wem-mcp-server
npm install
npm run buildAdd to your Claude Desktop config:
Windows: %APPDATA%\Claude\claude_desktop_config.json
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"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-serverSet the environment variables WEM_USERNAME and WEM_PASSWORD before starting.
{
"mcpServers": {
"weishaupt-wem": {
"command": "node",
"args": ["/path/to/wem-mcp/build/index.js"],
"env": {
"WEM_USERNAME": "your_email@example.com",
"WEM_PASSWORD": "your_password"
}
}
}
}Variable | Required | Description |
| Yes | Your WEM Portal email |
| Yes | Your WEM Portal password |
| No | API base URL (default: |
Tool | Description |
| List all devices with modules. Call this first to discover IDs. |
| Get connection status of a device |
| Full device overview: all modules with all parameters in one call |
| Get all parameters of a module with current values |
| Get parameter metadata (names, min/max, enums, writable flag) |
| List only adjustable parameters with ranges and options |
| Read specific parameter values by ID |
| Set a parameter value (e.g., target temperature) |
Start withwem_get_devices to discover your deviceId, moduleIndex, and moduleType, then use wem_get_overview for a complete snapshot of your heating system.
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)Type | Name | Description |
1 | SYSTEM | System overview |
2 | HZK | Heating circuit (temperatures, operating mode) |
3 | WW | Hot water (temperature, push, schedule) |
5 | TERMINAL | Control panel |
6 | GATEWAY | Communication gateway |
7 | WE | Heat generator (boiler/heat pump performance) |
9 | Device | Physical device unit |
10 | GROUND | Ground module |
Command | Description |
| Build the project |
| Watch mode (auto-rebuild on changes) |
| Run server directly |
| Test API connection |
| Official MCP Inspector (Web UI) |
| CLI inspector for quick API tests |
Make sure you can log in atwemportal.com before using this server.
Issue | Solution |
Authentication failed | Verify credentials, check if WEM Portal blocks after too many attempts |
Connection timeout | Check internet, WEM Portal may be temporarily unavailable (30s default timeout) |
Parameter values show 0 | Some parameters (e.g. room temperature) require a physical sensor connected to the device |
Contributions are welcome! Please open an issue or submit a pull request.
MIT - see LICENSE
disane.dev | Blog | GitHub | npm
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