Mettler Toledo Balance
PYPI · LABMCP-METTLER-TOLEDO · SCANNED SEP 30
MCP server for Mettler Toledo laboratory balances (MT-SICS): weigh, tare, zero, log drift, adjust.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security49
- Malware scan not yet available for this package.Unverified
- No known CVEs affecting this package version or its production dependencies.Pass
- Runs hatchling.build at install time, a recognised build step with no custom scripting around it. View diagnostics → Pass
- 2 of 17 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency100
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to K-Dense-AI/lab-instrument-mcps). View diagnostics → Pass
- Clear OSI-approved license (Apache-2.0).Pass
- Actively maintained (last published 3 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability78
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 992 tokens (~58/item across 17 items; 17 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management13
- Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage94
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 80% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 17 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 18 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the Mettler Toledo Balance MCP server?
Mettler Toledo Balance runs locally as a PyPI package, launched with uvx labmcp-mettler-toledo. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
pypi · labmcp-mettler-toledo
claude mcp add k-dense-ai-labmcp-mettler-toledo -- uvx labmcp-mettler-toledo
{
"mcpServers": {
"k-dense-ai-labmcp-mettler-toledo": {
"command": "uvx",
"args": [
"labmcp-mettler-toledo"
]
}
}
} {
"servers": {
"k-dense-ai-labmcp-mettler-toledo": {
"command": "uvx",
"args": [
"labmcp-mettler-toledo"
]
}
}
} codex mcp add k-dense-ai-labmcp-mettler-toledo -- uvx labmcp-mettler-toledo
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"k-dense-ai-labmcp-mettler-toledo": {
"type": "local",
"command": [
"uvx",
"labmcp-mettler-toledo"
],
"enabled": true
}
}
} openclaw mcp add k-dense-ai-labmcp-mettler-toledo --command uvx --arg labmcp-mettler-toledo
mcp_servers:
k-dense-ai-labmcp-mettler-toledo:
command: "uvx"
args: ["labmcp-mettler-toledo"] {
"McpServers": {
"k-dense-ai-labmcp-mettler-toledo": {
"Transport": "stdio",
"Command": "uvx",
"Arguments": [
"labmcp-mettler-toledo"
]
}
}
} assistant mcp add k-dense-ai-labmcp-mettler-toledo -t stdio -c uvx -a labmcp-mettler-toledo
{
"mcpServers": {
"k-dense-ai-labmcp-mettler-toledo": {
"command": "uvx",
"args": [
"labmcp-mettler-toledo"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 29 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Sept 26 −4
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Sept 26 +32
- Injection markers: unverified → pass ▲ security
- First check of Judged manipulation: pass security
- Tool coverage: unverified → 100 ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Stability: unverified → 0.03 ▲ functional
- First check of Schema quality: fail functional
- First check of Schema quality: excellent functional
- First check of Destructive annotations: pass functional
- First check of Schema quality: pass functional
- First check of Tool coverage: 80 functional
- First check of Tool coverage: 100 functional
- Package version: 0.1.2 → 0.1.3 functional
- 26 Sept 26 39
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 30 Sept 2026 · Analysed pypi/labmcp-mettler-toledo@0.1.3
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | pypi |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | K-Dense-AI/lab-instrument-mcps |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/K-Dense-AI/lab-instrument-mcps/.github/workflows/release.yml@refs/tags/labmcp-mettler-toledo-v0.1.3 |
| Rekor log index | 2969517487 |
| Predicate type | PyPI publish attestation https://docs.pypi.org/attestations/publish/v1 |
| Subject digest | sha256:3b68fc833636d145dc6c9695ac1864e69341c7c8dd6cb891e79834978bfdc088 |
Background: How many MCP packages publish verified provenance →
Install scripts 1 script
| Hook | Tier | Command |
|---|---|---|
| build_backend | allowlisted | hatchling.build |
Background: Why install scripts are a supply-chain risk →
Dependencies 17 packages
| Packages resolved | 17 |
|---|---|
| Stale | 2 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
clear_tare Clear Tare ~19
Clear the tare memory (tare = 0).
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
get_command_log Get Command Log ~46
Return the most recent raw commands sent to / replies received from the instrument (newest last). Useful for debugging and for recording what was done.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | array | yes | – |
No examples provided.
get_connection_info Get Connection Info ~40
Report which instrument is connected (identity, address, simulated or real), whether the server is read-only, and the active safety limits. Call this first.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
get_draft_shield Get Draft Shield ~30
Report the position of the motorised draft-shield doors (Excellence/XPR balances only).
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
get_tare Get Tare ~19
Return the weight currently stored in the tare memory.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| stable | boolean | yes | True if the balance reported a stable reading |
| timestamp | string | yes | UTC time the reading was taken (ISO 8601) |
| unit | string | yes | Unit reported by the balance, e.g. 'g' or 'mg' |
| value | number | yes | Net weight value |
No examples provided.
log_weight_series Log Weight Series ~61
Record a series of immediate (unfiltered) readings to monitor drift, evaporation, moisture uptake or stabilisation. Returns every reading plus summary statistics.
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | – | Number of readings |
| interval_s | number | – | Seconds between readings |
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | yes | – |
| drift_per_min | number | yes | Least-squares slope of weight vs time, in unit/min |
| maximum | number | yes | – |
| mean | number | yes | – |
| minimum | number | yes | – |
| readings | array | yes | – |
| stdev | number | yes | – |
| unit | string | yes | – |
No examples provided.
read_temperature Read Temperature ~30
Read the balance's internal temperature probe(s) in °C (MT-SICS M28, if supported).
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | array | yes | – |
No examples provided.
read_weight Read Weight ~31
Read the current net weight from the balance.
| Name | Type | Req | Description |
|---|---|---|---|
| stable | boolean | – | Wait for a stable reading (recommended) |
| Name | Type | Req | Description |
|---|---|---|---|
| stable | boolean | yes | True if the balance reported a stable reading |
| timestamp | string | yes | UTC time the reading was taken (ISO 8601) |
| unit | string | yes | Unit reported by the balance, e.g. 'g' or 'mg' |
| value | number | yes | Net weight value |
No examples provided.
reconnect Reconnect ~35
Close and re-open the connection to the instrument (e.g. after it was power cycled or a cable was re-plugged).
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
reset_balance Reset Balance ~65
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 @). Clears the tare. Motorised draft-shield doors have their own obstruction detection and reverse if blocked.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
run_internal_adjustment Run Internal Adjustment ~50
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.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
set_draft_shield Set Draft Shield ~48
Open or close the motorised draft-shield doors. Make sure nothing (and no one's fingers) is in the way of the doors.
| Name | Type | Req | Description |
|---|---|---|---|
| position | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
set_tare_preset Set Tare Preset ~57
Preset a known tare weight (e.g. a container weighed earlier).
| Name | Type | Req | Description |
|---|---|---|---|
| unit | string | – | Must be the balance's unit 1, usually 'g' |
| value | number | yes | Tare weight to preset |
| Name | Type | Req | Description |
|---|---|---|---|
| stable | boolean | yes | True if the balance reported a stable reading |
| timestamp | string | yes | UTC time the reading was taken (ISO 8601) |
| unit | string | yes | Unit reported by the balance, e.g. 'g' or 'mg' |
| value | number | yes | Net weight value |
No examples provided.
show_message Show Message ~57
Show a short message on the balance display (e.g. 'Add sample 3'). Use `show_weight_display` to return to the normal weight display.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Text for the balance display; '' clears it |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
show_weight_display Show Weight Display ~19
Switch the balance display back to showing the weight.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
tare Tare ~56
Tare the balance: store the current load (e.g. an empty container) as the tare weight. Returns the stored tare weight.
| Name | Type | Req | Description |
|---|---|---|---|
| immediately | boolean | – | Tare now even if unstable (less accurate). Default waits for stability. |
| Name | Type | Req | Description |
|---|---|---|---|
| stable | boolean | yes | True if the balance reported a stable reading |
| timestamp | string | yes | UTC time the reading was taken (ISO 8601) |
| unit | string | yes | Unit reported by the balance, e.g. 'g' or 'mg' |
| value | number | yes | Net weight value |
No examples provided.
zero Zero ~36
Zero the balance with the current load. Also clears the tare memory.
| Name | Type | Req | Description |
|---|---|---|---|
| immediately | boolean | – | Zero now even if the reading is unstable |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
What is the Mettler Toledo Balance MCP server?
Mettler Toledo Balance is an MCP server listed in the public MCP registry as io.github.K-Dense-AI/labmcp-mettler-toledo. MCP server for Mettler Toledo laboratory balances (MT-SICS): weigh, tare, zero, log drift, adjust. This page covers its PyPI package (labmcp-mettler-toledo).
Is the Mettler Toledo Balance MCP server safe to use?
Mettler Toledo Balance scores 68 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 30 September 2026. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Mettler Toledo Balance MCP server expose?
Mettler Toledo Balance exposes 17 tools: get_connection_info, get_command_log, reconnect, read_weight, log_weight_series, and 12 more. Their descriptions and schemas cost roughly 699 tokens of context every time the server is loaded.
Is the Mettler Toledo Balance MCP server still maintained?
Mettler Toledo Balance is still listed as active in the MCP registry. We last reached this channel on 30 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Mettler Toledo Balance MCP server under?
Mettler Toledo Balance declares the Apache-2.0 licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.