Victron TCP

01 · What it does

• System overview: battery SOC, PV power, grid power, AC load and ESS status
• Battery, solar charger, grid, inverter/charger, tank, temperature and EV charger status
• Discover GX devices on the network and generate the config
• Read raw Modbus registers (900+ in the bundled register list)
• 23 prompts for daily and monthly energy reports, storm prep, diagnostics and commissioning

02 · Install

$ claude mcp add-json victron-tcp '{"type":"stdio","command":"npx","args":["-y","victron-tcp"]}'

1. Read-only for now; write support (ESS mode, setpoints, relays) is on the roadmap
2. MQTT is on by default on Venus OS; for Modbus enable Settings > Services > Modbus TCP
3. Don't know the GX IP? Ask the agent to find and set up your Victron GX device
4. No auth locally (it trusts the LAN). For remote access the same author has victron-vrm-mcp

03 · Client config (from README)

{
  "mcpServers": {
    "victron-tcp": {
      "command": "npx",
      "args": ["-y", "victron-tcp"],
      "env": {
        "VICTRON_HOST": "192.168.1.50",
        "VICTRON_TRANSPORT": "mqtt",
        "VICTRON_PORTAL_ID": "your-portal-id"
      }
    }
  }
}

Install steps taken from the project README (its recommended path first). Placeholders are the maintainer's. Not bench-tested by HardwareMCP yet.