Thorlabs Optical Power Meter
PYPI · LABMCP-THORLABS-PM · SCANNED SEP 30
MCP server for Thorlabs optical power meters (PM100 family, PM400, PM101, PM5020) over SCPI.
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 Security99
- No malware found by supply-chain analysis.Pass
- 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 Usability79
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 1055 tokens (~95/item across 11 items; 11 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 Coverage97
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 89% 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 11 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 12 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 Thorlabs Optical Power Meter MCP server?
Thorlabs Optical Power Meter runs locally as a PyPI package, launched with uvx labmcp-thorlabs-pm. 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-thorlabs-pm
claude mcp add k-dense-ai-labmcp-thorlabs-pm -- uvx labmcp-thorlabs-pm
{
"mcpServers": {
"k-dense-ai-labmcp-thorlabs-pm": {
"command": "uvx",
"args": [
"labmcp-thorlabs-pm"
]
}
}
} {
"servers": {
"k-dense-ai-labmcp-thorlabs-pm": {
"command": "uvx",
"args": [
"labmcp-thorlabs-pm"
]
}
}
} codex mcp add k-dense-ai-labmcp-thorlabs-pm -- uvx labmcp-thorlabs-pm
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"k-dense-ai-labmcp-thorlabs-pm": {
"type": "local",
"command": [
"uvx",
"labmcp-thorlabs-pm"
],
"enabled": true
}
}
} openclaw mcp add k-dense-ai-labmcp-thorlabs-pm --command uvx --arg labmcp-thorlabs-pm
mcp_servers:
k-dense-ai-labmcp-thorlabs-pm:
command: "uvx"
args: ["labmcp-thorlabs-pm"] {
"McpServers": {
"k-dense-ai-labmcp-thorlabs-pm": {
"Transport": "stdio",
"Command": "uvx",
"Arguments": [
"labmcp-thorlabs-pm"
]
}
}
} assistant mcp add k-dense-ai-labmcp-thorlabs-pm -t stdio -c uvx -a labmcp-thorlabs-pm
{
"mcpServers": {
"k-dense-ai-labmcp-thorlabs-pm": {
"command": "uvx",
"args": [
"labmcp-thorlabs-pm"
]
}
}
} 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.
- 30 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Sept 26 +11
- Provenance: unverified → pass ▲ security
- The attested source repository moved: K-Dense-AI/lab-instrument-mcps security
- 28 Sept 26 +33
- 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
- Tool safety: pass → unverified ▼ security
- Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet. security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- Package version: 0.1.1 → 0.1.2 functional
- 26 Sept 26 71
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-thorlabs-pm@0.1.2
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-thorlabs-pm-v0.1.2 |
| Rekor log index | 2969518269 |
| Predicate type | PyPI publish attestation https://docs.pypi.org/attestations/publish/v1 |
| Subject digest | sha256:99928e821a0b1dfae0ce00953a7f242eebfd5ca1d5f512d6310abd11edfd7408 |
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 →
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_device_info Get Device Info ~45
Identify the meter console and the attached sensor head (model, serial, type, wavelength range, power ranges), and report the present wavelength, averaging, range and zero value.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| auto_range | – | yes | – |
| averaging_count | integer | yes | – |
| firmware | string | yes | – |
| manufacturer | string | yes | – |
| max_range_w | – | yes | Least sensitive range (W). Not the sensor damage threshold - check the sensor spec. |
| model | string | yes | – |
| range_w | – | yes | Upper limit of the power range in use, W |
| sensor | – | yes | None if no sensor head is plugged in |
| serial | string | yes | – |
| timestamp | string | yes | – |
| wavelength_max_nm | – | yes | – |
| wavelength_min_nm | – | yes | – |
| wavelength_nm | – | yes | – |
| zero_value | – | yes | Present dark-zero correction (A for photodiodes, V for thermal) |
No examples provided.
log_power_series Log Power Series ~136
Log a series of power readings to characterise laser stability, warm-up or drift. Returns mean, stdev, min/max, RMS and peak-to-peak stability (%) and drift (%/min), plus the readings (downsampled to `max_points`; use `save_path`, a new .csv file, to keep all of them).
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | – | Number of readings |
| interval_s | number | – | Seconds between readings (0 = as fast as the meter allows) |
| max_points | integer | – | Maximum readings returned in the reply |
| save_path | – | – | Optional CSV path for every reading |
| Name | Type | Req | Description |
|---|---|---|---|
| completed | boolean | – | False if the series stopped early to stay within the tool's time budget |
| count | integer | yes | Readings actually taken |
| drift_percent_per_min | – | yes | Drift relative to the mean, % per minute |
| drift_w_per_min | number | yes | Least-squares slope of power vs time, W per minute |
| duration_s | number | yes | Actual elapsed time from first to last reading |
| interval_s | number | yes | – |
| max_w | number | yes | – |
| mean_formatted | string | yes | – |
| mean_w | number | yes | – |
| min_w | number | yes | – |
| peak_to_peak_stability_percent | – | yes | (max - min) / mean x 100 |
| points_returned | integer | yes | – |
| power_w | array | yes | Readings in W (downsampled to max_points) |
| rms_stability_percent | – | yes | stdev / mean x 100 (None if mean <= 0) |
| saved_to | – | – | – |
| started | string | yes | – |
| stdev_w | number | yes | – |
| time_s | array | yes | Reading times relative to the first reading (downsampled to max_points) |
| wavelength_nm | – | yes | – |
No examples provided.
read_power Read Power ~41
Read the optical power once (in W, plus dBm and a formatted string). The reading uses the configured correction wavelength and averaging; set the wavelength first.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| formatted | string | yes | Power with an SI prefix, e.g. '1.234 mW' |
| power_dbm | – | yes | Power in dBm re 1 mW; None if the reading is <= 0 |
| power_w | number | yes | – |
| sensor | string | yes | – |
| timestamp | string | yes | – |
| wavelength_nm | – | yes | Correction wavelength used for this reading |
No examples provided.
read_sensor_temperature Read Sensor Temperature ~32
Read the sensor head temperature in °C (thermal sensors and other heads with a built-in temperature sensor only).
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
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.
set_averaging Set Averaging ~76
Set how many samples the meter averages for each reading. More averaging lowers noise but slows each reading (PM100 series: ~3 ms per sample; PM400/PM101/PM5020: 1 ms).
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | yes | Samples averaged per reading (PM100: ~3 ms per sample) |
Structured output declared, but exposes no named fields.
No examples provided.
set_range Set Range ~79
Select auto-ranging, or a fixed power range that fits `range_w` (the meter picks the most sensitive range that can hold that power). A fixed range reports over-range if exceeded.
| Name | Type | Req | Description |
|---|---|---|---|
| mode | string | – | auto-ranging or a fixed range |
| range_w | – | – | For manual mode: the highest power you expect, in W |
Structured output declared, but exposes no named fields.
No examples provided.
set_wavelength Set Wavelength ~63
Set the correction wavelength (nm) the meter uses to convert sensor signal to power. Must be within the sensor's calibrated range (see `get_device_info`); sent as a whole number of nm.
| Name | Type | Req | Description |
|---|---|---|---|
| wavelength_nm | number | yes | Source wavelength in nm |
Structured output declared, but exposes no named fields.
No examples provided.
zero_sensor Zero Sensor ~64
Dark-zero the sensor (removes dark current / thermal offset). BEFORE calling, ask the user to block the beam and cover the sensor aperture completely, and wait for them to confirm: zeroing with light on the sensor corrupts all later readings. Takes a few seconds.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
What is the Thorlabs Optical Power Meter MCP server?
Thorlabs Optical Power Meter is an MCP server listed in the public MCP registry as io.github.K-Dense-AI/labmcp-thorlabs-pm. MCP server for Thorlabs optical power meters (PM100 family, PM400, PM101, PM5020) over SCPI. This page covers its PyPI package (labmcp-thorlabs-pm).
Is the Thorlabs Optical Power Meter MCP server safe to use?
Thorlabs Optical Power Meter scores 84 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 Thorlabs Optical Power Meter MCP server expose?
Thorlabs Optical Power Meter exposes 11 tools: get_connection_info, get_command_log, reconnect, get_device_info, read_power, and 6 more. Their descriptions and schemas cost roughly 657 tokens of context every time the server is loaded.
Is the Thorlabs Optical Power Meter MCP server still maintained?
Thorlabs Optical Power Meter 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 Thorlabs Optical Power Meter MCP server under?
Thorlabs Optical Power Meter 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.