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Directory / Digital Gemology: gemstone and diamond cut library

Digital Gemology: gemstone and diamond cut library

Q: Is Digital Gemology: gemstone and diamond cut library MCP server safe?

QAmcp's test on 1 Nov 2026: None of the hidden-instruction wordings we know were found in its tool descriptions. Its error messages showed no secrets or internal details. All 8 of its tools are labeled read-only. Overall it scored 90/100 on 1 Nov 2026. A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

by digitalgemology.com · https://digitalgemology.com/mcp

Gemstone and diamond cuts: ray-traced brilliance, fire and sparkle in 7 gems, 3D and faceting files

8 tools✓ all read-only✓ no account neededPricing: not listed

Visit website

90 /100

PASS · WITH NOTES

11 of 11 checks · 1 Nov 2026

Is Digital Gemology: gemstone and diamond cut library MCP server safe?

None of the hidden-instruction wordings we know were found in its tool descriptions.
Its error messages showed no secrets or internal details.
All 8 of its tools are labeled read-only.
Overall it scored 90/100 on 1 Nov 2026.

A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

What it can do

8 tools, in the server's own words.

search_cutsread-only

Search Digital Gemology's gem cuts and Platonic solids by name, style, shape or use (for example 'square step cut', 'round brilliant for moissanite', 'historic…

get_cutread-only

Everything about one cut: what it is, measured specifications (facets, angles, depth, size, index gear), brilliance, fire and scintillation in all seven gemsto…

best_cuts_for_gemstoneread-only

The top ten brilliants and the top ten jewelry cuts in one gemstone, ranked by brilliance, fire and scintillation added together, with the stone's optical cons…

cut_in_gemstoneread-only

How one cut performs in one gemstone: its headline, eight measured scores against the T73 round brilliant in the same stone, and its pros and cons.

list_gemstonesread-only

The seven gemstones every cut is measured in, with refractive index, critical angle, dispersion, hardness and specific gravity, and the three best cuts of each…

get_cut_scoresread-only

Scores from the Digital Gemology Cut Performance Index for every cut we sell: overall, brilliance, fire, scintillation, tilt, symmetry, spread, shape-norm and …

compare_cutsread-only

Two cuts side by side in one gemstone: overall, brilliance, fire, scintillation, tilt, face-up spread and leakage from the Cut Performance Index, each cut's pl…

recommend_cutread-only

The best cuts in one gemstone for what matters to the buyer: overall light performance, brilliance, fire, scintillation (sparkle), spread (looks bigger for its…

Test results

Safe mode: only tools labeled read-only were run. How the test works

!
Tools work with good inputs
1 warning
- !get_cut_scores: Answered with about 238 KB of text. Many AI apps cut off tool answers this big, so the AI may never see the end of it.
- and 7 more
note
!
Bad inputs give a clean error
1 warning
- !search_cuts: Accepted wrong type for "query" without complaining
- and 11 more
note
✓
ConnectsConnected in 189 ms
pass
✓
Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
pass
✓
Lists its toolsFound 8 tools
pass
✓
Every tool is describedAll 8 tools and their inputs are described
pass
✓
Tools are labeled safe or dangerousEvery tool has a safety label
pass
✓
No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.
pass
✓
Fast enough
All good
- ✓Connecting took 189 ms
- ✓Listing tools took 78 ms
- ✓Average tool answer: 68 ms
- ✓search_cuts: Slowest tool: search_cuts (156 ms)
pass
✓
No secrets leakedChecked 14 error messages: no secrets or internal details
pass
✓
Follows MCP best practices (not scored yet)Tool names, safety labels and tool list size follow the MCP guide
pass
–
Tools work togetherNo tool's answer could be fed into another tool, so there were no chains to test (not counted either way)
not tested

Test it yourself

Free and open source. Same checks, same score.

npx qamcp-cli https://digitalgemology.com/mcp

Show this score on GitHub

Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.

[![QAmcp score](https://qamcp.dev/s/com-digitalgemology-cut-library.svg)](https://qamcp.dev/s/com-digitalgemology-cut-library.html)

Score over time

1 Nov 202690

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use Digital Gemology: gemstone and diamond cut library, signed in with GitHub, one per person. Reviews never change the score.

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