Mettler Toledo Balance MCP Server

Let an AI agent weigh samples, tare containers, log drift and evaporation, run internal adjustments and drive the draft shield on Mettler Toledo balances through the open MT-SICS interface command set. Its 17 documented tools cover tare, weight, log, draft.

People who work with tare, weight and log and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

One of 32 MCP servers published from k-dense-ai/lab-instrument-mcps. Stars and repository activity are shared across all of them. See all 32 →

VERIFIED ACTIVE

LAST COMMIT 2026-09-26 · VERIFIED 2026-09-30

Apache-2.0 · Python servers · how we verify → /methodology

01 · Install Mettler Toledo Balance

Claude Code

claude mcp add k-dense-ai-lab-instrument-mcps-servers-c -- uvx labmcp-mettler-toledo

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "k-dense-ai-lab-instrument-mcps-servers-c": {
      "command": "uvx",
      "args": [
        "labmcp-mettler-toledo"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

repo age created 2026-09-25 - young repo, little track record yet

license Apache-2.0 - declared in the repository

pypi package labmcp-mettler-toledo - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.K-Dense-AI is GitHub-verified and matches the repo owner

03 · What Mettler Toledo Balance can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can report the position of the motorised draft-shield doors (Excellence/XPR balances only), read the weight currently stored in the tare memory, read the balance's internal temperature probe(s) in °C (MT-SICS M28, if supported), and read the current net weight from the balance.

Capability map

Tools grouped from the project's README - what Mettler Toledo Balance lets an agent do.

Tare

4 tools - e.g. Clear the tare memory (tare = 0).; Return the weight currently stored in the tare memory.; Preset a known tare weight (e.g. a container weighed earlier).

clear_tare · get_tare · set_tare_preset · tare

read & search

4 tools - e.g. Return the most recent raw commands sent to / replies received from the instrument (newest last). Useful for debugging and for recording what was done.; Report which instrument is connected (identity…

get_command_log · get_connection_info · read_temperature · show_message

Weight

3 tools - e.g. Record a series of immediate (unfiltered) readings to monitor drift, evaporation, moisture uptake or stabilisation. Returns every reading plus summary statistic; Read the current net weight from the…

log_weight_series · read_weight · show_weight_display

Draft

2 tools - e.g. Report the position of the motorised draft-shield doors (Excellence/XPR balances only).; Open or close the motorised draft-shield doors. Make sure nothing (and no one's fingers) is in the way of the doors.

get_draft_shield · set_draft_shield

Reconnect

1 tool - e.g. Close and re-open the connection to the instrument (e.g. after it was power cycled or a cable was re-plugged).

reconnect

Reset

1 tool - e.g. Abort whatever the balance is doing (an adjustment, a repeating weight stream, a pending command) and reset it to its power-on state without zeroing (MT-SICS @)

reset_balance

run & execute

1 tool - e.g. Adjust (calibrate) the balance with its built-in reference weight (MT-SICS C3). The pan must be empty and the balance undisturbed. Takes roughly 1-3 minutes.

run_internal_adjustment

Zero

1 tool - e.g. Zero the balance with the current load. Also clears the tare memory.

zero

Limitations (from the README)

- read_weight(stable=True) sends S, which waits for stability. If the balance cannot settle (draughts, vibration), it returns S I. The server reports this as an error, so retry or use stable=false. - Weights are in the balance's unit 1 (normally grams). Units shown on the display (unit 2) don't affect the interface. - Draft-shield (WS) and temperature (M28) commands exist only on balances with that hardware; other ba

04 · Who maintains Mettler Toledo Balance

Mettler Toledo Balance is maintained by k-dense-ai. We track 32 MCP servers from k-dense-ai - 32 actively maintained, 9 combined GitHub stars, oldest repo from Sep 2026. Full record: all servers from k-dense-ai.

05 · Facts

repository: github.com/k-dense-ai/lab-instrument-mcps
website: https://github.com/K-Dense-AI/lab-instrument-mcps/tree/main/servers/chemistry/mettler-toledo-balance
category: other - actively maintained as of 2026-09-30.
registry: io.github.K-Dense-AI/labmcp-mettler-toledo (active, first published 2026-09-26 · 4 versions)
packages: pypi:labmcp-mettler-toledo

06 · Mettler Toledo Balance FAQ

Is Mettler Toledo Balance still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-26. We re-verify nightly.

What can Mettler Toledo Balance do?

How do I install Mettler Toledo Balance?

Run `uvx labmcp-mettler-toledo`. You can also paste the ready-made client config above.

Does Mettler Toledo Balance run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Mettler Toledo Balance

Alternatives to Mettler Toledo Balance

Maintained other servers if Mettler Toledo Balance isn't the fit.

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