mcp-server-senseca-pro

An MCP server that lets AI assistants read live measurements from a Senseca PRO 111 / PRO 115 handheld Pt100 thermometer connected via USB.

Unofficial project, not affiliated with or endorsed by Senseca. Tested with a PRO 111, firmware V1.4.3.0, interface protocol V1.0.0.1.

Tools

With --allow-write two more tools are available:

The server cannot change calibration or adjustment data; the instrument does not offer that over its serial interface.

Requirements

• Python ≥ 3.10 and uv
• The instrument switched on and connected via USB-C. On the PRO 115 set Settings → USB mode to COM interface.
• Linux: your user must be in the dialout group (sudo usermod -aG dialout $USER, then log in again).
• Windows / macOS: no extra setup; the port shows up as COMx or /dev/cu.usbmodem….

Configuration

Claude Code

claude mcp add senseca-pro -- uvx mcp-server-senseca-pro

Claude Desktop and other clients

{
  "mcpServers": {
    "senseca-pro": {
      "command": "uvx",
      "args": ["mcp-server-senseca-pro"]
    }
  }
}

Options

Auto-detection looks for USB ID 0483:5740 and only accepts a port whose device reports manufacturer senseca. If several instruments are connected, set the port explicitly; on Linux prefer the stable /dev/serial/by-id/… path.

Only one program can use the serial port at a time. Close ProXware or terminal programs while the server is running.

Measurement notes

• Instrument accuracy: ±0.05 °C or ±0.06 % of reading (whichever is higher) ±1 digit, probe not included.
• The USB port is not galvanically isolated. With a probe touching a grounded medium, the USB connection can shift the reading. Compare readings with and without USB, and use a USB isolator if they differ (see the instrument manual, section 7.2).

Development

uv sync
uv run pytest                                   # tests use a simulated instrument
npx @modelcontextprotocol/inspector uv run mcp-server-senseca-pro   # try the tools interactively

The serial protocol is described in docs/protocol.md.

License

MIT