Ministry of Gems — Gemmology & Gemstones
REMOTE · MOG-CONCIERGE.33GURUGE.WORKERS.DEV
Gemology & gemmology: 215 FGAA terms, 25 handbooks, live gem stock, signed passport verification.
Available components
Last scanned (21 hours ago)
Scores higher than 81% of remote servers
Reachable. Last reached 4 Nov 2026.
Category E-commerce
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability86
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 2763 tokens (~70/item across 39 items; 13 tools + 26 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage90
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 65% 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 13 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 15 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
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.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 18 Sept 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “define_gem_term” rewrote its description, which is the text the model reads security
- Tool “search_gem_knowledge” rewrote its description, which is the text the model reads security
- Tool coverage: 100% → 65% ▼ functional
- Schema quality: 49 → 70 ▼ functional
- Schema quality: good → excellent functional
- New prompt “choose_a_sapphire” functional
- New prompt “sapphire_or_diamond” functional
- New prompt “verify_a_gem_passport” functional
- Server version: 2.0.0 → 2.0.1 functional
- Server version: 1.1.0 → 2.0.0 functional
- New tool “birthstone_for_month” functional
- New tool “compare_gems” functional
- New tool “faceup_size_estimate” functional
- New tool “gem_care_guide” functional
- New tool “gem_properties” functional
- New tool “get_gem_product” functional
- New tool “lab_report_check” functional
- New tool “sapphire_price_guide” functional
- New tool “search_gem_inventory” functional
- New tool “verify_gem_passport” functional
- 14 Sept 26 0
- Stability: 0.97 → pass security
- 30 Aug 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “search_gem_knowledge” rewrote its description, which is the text the model reads security
- Schema quality: excellent → good functional
- New resource “The Orientation Premium” functional
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- HTTPS: unverified → fail ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “search_gem_knowledge” rewrote its description, which is the text the model reads security
- Schema quality: 31 → 50 ▼ functional
- Schema quality: good → excellent functional
- New resource “The Diamond Buyer's Handbook” functional
- New resource “The Gold & Precious Metals Handbook” functional
- New resource “The Insurance & Valuation Handbook” functional
- New resource “The Jewellery Buyer's Handbook” functional
- Server version: 1.0.1 → 1.1.0 functional
- Tool “define_gem_term” changed its title: Define a gemmological term cosmetic
- Tool “list_gem_terms” changed its title: List lexicon terms cosmetic
- Tool “search_gem_knowledge” changed its title: Search the Ministry of Gems library cosmetic
- 24 Aug 26 0
- Tool “search_gem_knowledge” rewrote its description, which is the text the model reads security
- Schema quality: 35 → 31 ▲ functional
- New resource “The Birthstone Handbook” functional
- New resource “The Ceylon Treasury Handbook” functional
- New resource “The Natural vs Lab-Grown Handbook” functional
- New resource “The Online Gem Buyer's Handbook” functional
- New resource “The Padparadscha Handbook” functional
- New resource “The Provenance Handbook” functional
- New resource “The Spinel Handbook” functional
- New resource “The Teal & Parti Sapphire Handbook” functional
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 4 Nov 2026 · Probed https://mog-concierge.33guruge.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=33guruge.workers.dev | CN=WE1,O=Google Trust Services,C=US | 7 Oct 2026 | 5 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | b05c89e6151d00870ef78fb0b2da712d |
| SANs: 33guruge.workers.dev, *.33guruge.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mog-concierge.33guruge.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mog-concierge.33guruge.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://mog-concierge.33guruge.workers.dev/mcp | Served over HTTP | 200 |
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 →
birthstone_for_month Birthstone by month ~69
The modern and traditional birthstones for a month, from the FGAA-reviewed table, with a link to The Birthstone Handbook for history, treatments to expect and buying guidance. Accepts a month name or number.
| Name | Type | Req | Description |
|---|---|---|---|
| month | string | yes | "September", "sep" or "9". |
| Name | Type | Req | Description |
|---|---|---|---|
| found | boolean | – | – |
| handbook_url | string | – | – |
| modern | string | – | – |
| month | string | – | – |
| source_url | string | – | – |
| traditional_or_alternative | string | – | – |
No examples provided.
compare_gems Compare two gems ~72
Side-by-side physical properties of two gem species with a plain verdict on which is harder, and a note on toughness — the half of durability the hardness scale does not show. Good for "sapphire or diamond for an everyday ring".
| Name | Type | Req | Description |
|---|---|---|---|
| gem_a | string | yes | – |
| gem_b | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| a | object | – | – |
| b | object | – | – |
| found | boolean | – | – |
| harder | string | – | – |
| note | string | – | – |
No examples provided.
define_gem_term Define a gemmological term ~94
Look up a gemmological term in The Gem Lexicon of Ministry of Gems — 215 definitions verified by an FGAA-qualified gemmologist. Returns the definition, its subject section, and a citable anchor URL. Use for terms such as padparadscha, corundum, parti sapphire, unheated, or asterism.
| Name | Type | Req | Description |
|---|---|---|---|
| term | string | yes | The gemmological term to define. |
| Name | Type | Req | Description |
|---|---|---|---|
| definition | string | – | FGAA-verified definition. |
| found | boolean | – | False when no term matched. |
| hint | string | – | – |
| lexicon_url | string | – | – |
| message | string | – | – |
| section | string | – | Lexicon subject section. |
| source | string | – | Name of the source work. |
| term | string | – | Canonical term name. |
| url | string | – | Citable anchor URL on ministryofgems.com.au. |
| verified_by | string | – | Credential of the verifying gemmologist. |
No examples provided.
faceup_size_estimate Face-up size for any gem species ~134
Approximate face-up millimetre dimensions for a stone of a given species, shape and carat weight — and, unlike diamond-only calculators, corrected for specific gravity, so a 2 ct sapphire, spinel, emerald or opal is sized correctly rather than as if it were diamond. Shapes: round, oval, cushion, emerald, pear, marquise, princess, radiant, heart, trillion.
| Name | Type | Req | Description |
|---|---|---|---|
| carat | number | yes | – |
| shape | string | – | default round |
| species | string | – | e.g. sapphire, diamond, spinel, emerald, opal (default diamond). |
| Name | Type | Req | Description |
|---|---|---|---|
| approx_face_up_mm | object | – | – |
| carat | number | – | – |
| diamond_equivalent_mm | string | – | – |
| display | string | – | – |
| found | boolean | – | – |
| method | string | – | – |
| note | string | – | – |
| shape | string | – | – |
| species | string | – | – |
| specific_gravity | number | – | – |
No examples provided.
gem_care_guide How to clean and wear a gem ~77
Whether warm soapy water, an ultrasonic cleaner or a steam cleaner is safe for a given gemstone, plus everyday-wear notes, from the FGAA-reviewed care table. Covers sapphire and ruby, diamond, emerald, opal, pearl, tanzanite, tourmaline and more.
| Name | Type | Req | Description |
|---|---|---|---|
| gemstone | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| everyday_wear_notes | string | – | – |
| found | boolean | – | – |
| gemstone | string | – | – |
| handbook_url | string | – | – |
| source_url | string | – | – |
| steam_cleaner | string | – | – |
| ultrasonic_cleaner | string | – | – |
| warm_soapy_water | string | – | – |
No examples provided.
gem_properties Gem physical properties ~116
Mohs hardness, refractive index, specific gravity, birefringence and crystal system for a gem species (diamond, corundum/sapphire/ruby, emerald, spinel, opal, tourmaline, garnet, quartz and more), from the FGAA-reviewed Gem Data Tables. Accepts trade names — "sapphire" resolves to corundum, "tsavorite" to garnet.
| Name | Type | Req | Description |
|---|---|---|---|
| species | string | yes | Species or trade name, e.g. "sapphire", "diamond", "opal". |
| Name | Type | Req | Description |
|---|---|---|---|
| birefringence | string | – | – |
| crystal_system | string | – | – |
| found | boolean | – | – |
| licence | string | – | – |
| mohs_hardness | string | – | – |
| refractive_index | string | – | – |
| source_url | string | – | – |
| species | string | – | – |
| specific_gravity | string | – | – |
No examples provided.
get_gem_product Product detail ~95
Full detail for one Ministry of Gems product by handle or URL: specifications, description, price in AUD, availability, variants, images, the Digital Gemstone Passport link for loose stones, and a direct checkout link. Use after search_gem_inventory.
| Name | Type | Req | Description |
|---|---|---|---|
| handle | string | yes | Product handle (e.g. "blue-australian-sapphire-1-47ct-oval-80062") or full product URL. |
| Name | Type | Req | Description |
|---|---|---|---|
| available | boolean | – | – |
| checked_at | string | – | – |
| checkout_link | string | – | – |
| description | string | – | – |
| found | boolean | – | – |
| images | array | – | – |
| passport_url | string | – | – |
| price_aud | number | – | – |
| specifications | object | – | – |
| stone_id | string | – | – |
| title | string | – | – |
| url | string | – | – |
| variants | array | – | – |
No examples provided.
lab_report_check Where to verify a laboratory report ~135
The issuing laboratory's own verification page and a four-step checklist for confirming a gemstone or diamond grading report — GIA, IGI, GRS, SSEF, Gübelin, AGL, Lotus, GIT, HRD, GCAL and others, including the coloured-stone laboratories diamond tools omit. Explains what "FGAA" means and flags unrecognised lab names. Routes to the lab; does not verify the report itself.
| Name | Type | Req | Description |
|---|---|---|---|
| lab | string | yes | Laboratory name or acronym, e.g. "GIA", "GRS", "SSEF". |
| report_number | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| checklist | array | – | – |
| found | boolean | – | – |
| house_position | string | – | – |
| lab | string | – | – |
| lab_note | string | – | – |
| reminder | string | – | – |
| report_number | string | – | – |
| verifies_coloured_stones | boolean | – | – |
| verify_url | string | – | – |
No examples provided.
list_gem_terms List lexicon terms ~64
List the gemmological terms available in The Gem Lexicon, optionally filtered to one subject section. Use this to discover what can be defined before calling define_gem_term.
| Name | Type | Req | Description |
|---|---|---|---|
| section | string | – | Optional section filter, e.g. "Treatments & Enhancement". |
| Name | Type | Req | Description |
|---|---|---|---|
| sections | array | yes | All lexicon section names. |
| term_count | integer | yes | – |
| terms | array | yes | – |
No examples provided.
sapphire_price_guide Sapphire price per carat (AUD) ~119
What natural sapphires actually cost per carat in Australian dollars, from Ministry of Gems' published price guide: bands by origin (Australian, Ceylon) and size, with the stone count behind each band and the date the bands were computed. Answers "how much is a 2 carat sapphire" honestly, as a house guide rather than a market index.
| Name | Type | Req | Description |
|---|---|---|---|
| carat | number | – | Optional carat weight to select the matching band. |
| origin | string | – | Optional: "Australian" or "Ceylon". |
| Name | Type | Req | Description |
|---|---|---|---|
| all_bands | array | – | – |
| as_of | string | – | – |
| basis | string | – | – |
| currency | string | – | – |
| matched_bands | array | – | – |
| note | string | – | – |
| source_url | string | – | – |
No examples provided.
search_gem_inventory Search Ministry of Gems stock ~220
Search the live Ministry of Gems catalogue of natural loose gemstones and finished jewellery — Ceylon and Australian sapphires, rubies, spinels, Australian opals, emeralds and more — with prices in Australian dollars, availability, carat weight and a link to buy. Filter by type (gems, ring, pendant, earrings), carat range and price range. Every loose gem returned carries a verifiable Digital Gemstone Passport.
| Name | Type | Req | Description |
|---|---|---|---|
| in_stock_only | boolean | – | Default true. |
| limit | integer | – | Max results, default 8, max 25. |
| max_carat | number | – | – |
| max_price_aud | number | – | – |
| min_carat | number | – | – |
| min_price_aud | number | – | – |
| query | string | – | Free text, e.g. "unheated ceylon blue sapphire", "australian opal pendant", "teal sapphire ring". |
| type | string | – | Optional: gems | ring | pendant | earrings | bracelet | jewellery. |
| Name | Type | Req | Description |
|---|---|---|---|
| catalogue_size | integer | – | – |
| currency | string | – | – |
| query | string | yes | – |
| result_count | integer | yes | – |
| results | array | yes | – |
No examples provided.
search_gem_knowledge Search the Ministry of Gems library ~94
Keyword search across the Ministry of Gems gemmological reference library — 215 lexicon definitions and 25 full-length buyer's handbooks, searched in full text across every section. Returns ranked results, each with the matched passage and a citable URL that deep-links to the chapter.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max results (default 5, max 20). |
| query | string | yes | Search query. |
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | The query as interpreted. |
| result_count | integer | yes | – |
| results | array | yes | Ranked matches. |
| verified_by | string | – | – |
No examples provided.
verify_gem_passport Verify a Digital Gemstone Passport ~147
Cryptographically verify a Ministry of Gems Digital Gemstone Passport by stone ID. Recomputes the SHA-256 digest of the signed record and checks its Ed25519 (EdDSA) signature against the house public key, then returns the attested record: species, carat, dimensions, cut, colour, clarity, origin, treatment and certificate status. Use when a buyer asks whether a stone or its passport is genuine, or before quoting any fact about a specific Ministry of Gems stone.
| Name | Type | Req | Description |
|---|---|---|---|
| stone_id | string | yes | Stone ID as printed on the passport or product page, e.g. "12322", "RUBY-B0797", "80067". |
| Name | Type | Req | Description |
|---|---|---|---|
| active | boolean | – | False when the house has revoked or superseded this passport. |
| corpus_url | string | – | – |
| digest_matches | boolean | – | – |
| fingerprint | string | – | – |
| found | boolean | – | – |
| issued | string | – | – |
| note | string | – | – |
| product_url | string | – | – |
| record | object | – | – |
| register_url | string | – | – |
| sha256 | string | – | – |
| signature_valid | boolean | – | – |
| status | string | – | active, revoked or superseded. |
| stone_id | string | – | – |
| title | string | – | – |
| verified | boolean | – | True only when digest and signature both check out. A withdrawn passport can still be verified:true — read active/withdrawn before relying on the record. |
| withdrawn | boolean | – | – |
| withdrawn_on | string | – | – |
| withdrawn_reason | string | – | – |
No examples provided.
How do I install the Ministry of Gems — Gemmology & Gemstones MCP server?
Ministry of Gems — Gemmology & Gemstones is a hosted endpoint at https://mog-concierge.33guruge.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mog-concierge.33guruge.workers.dev
claude mcp add --transport http au-com-ministryofgems-gemmology 'https://mog-concierge.33guruge.workers.dev/mcp'
What is the Ministry of Gems — Gemmology & Gemstones MCP server?
Ministry of Gems — Gemmology & Gemstones is an MCP server listed in the public MCP registry as au.com.ministryofgems/gemmology. Gemology & gemmology: 215 FGAA terms, 25 handbooks, live gem stock, signed passport verification. This page covers its hosted endpoint (https://mog-concierge.33guruge.workers.dev/mcp).
Is the Ministry of Gems — Gemmology & Gemstones MCP server safe to use?
Ministry of Gems — Gemmology & Gemstones scores 80 out of 100 on VerifyMCP. 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 Ministry of Gems — Gemmology & Gemstones MCP server expose?
Ministry of Gems — Gemmology & Gemstones exposes 13 tools: define_gem_term, search_gem_knowledge, list_gem_terms, verify_gem_passport, search_gem_inventory, and 8 more. Their descriptions and schemas cost roughly 1,436 tokens of context every time the server is loaded.
Does the Ministry of Gems — Gemmology & Gemstones MCP server require authentication?
No. We connected to Ministry of Gems — Gemmology & Gemstones without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Ministry of Gems — Gemmology & Gemstones MCP server still maintained?
Ministry of Gems — Gemmology & Gemstones is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.