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Digital Gemology: gemology lessons and diamond education

com.digitalgemology/gemology-lessonsdigitalgemology.comstreamable-httpv1.0.0Scanned

Gemology lessons to search and quote: the 4 Cs, diamond anatomy, grading reports, moissanite

4 tools: 4 only read.

Tools: 0 delete, 0 irreversible, 0 write, 4 read.
  • Reads private data · 0
  • Reads text others write · 0
  • Can send data out · 0
  • No findings

Tools listed without sign-in. Remote posture

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Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

4 tools

Only reads 4Show 4 read-only tools
  • explain_termWhat the lessons say about one gemology term (for example 'table', 'crown angle', 'fluorescence', 'girdle'): the passages that use it, each with the lesson it comes from.No findings

    Why it is in this group

    • The name "explain_term" says "explain": a word for reading.
    Description, as the server wrote it
    What the lessons say about one gemology term (for example 'table', 'crown angle', 'fluorescence', 'girdle'): the passages that use it, each with the lesson it comes from.

    Annotations the server declares

    • title: Explain a term
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_lessonOne lesson in full, as Markdown, with its page, course, quiz and the tools and cuts it uses.No findings

    Why it is in this group

    • The name "get_lesson" says "get": a word for reading.
    Description, as the server wrote it
    One lesson in full, as Markdown, with its page, course, quiz and the tools and cuts it uses. Give the lesson's page path or its title.

    Annotations the server declares

    • title: Read a lesson
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_coursesEvery course and topic hub with its lessons, in order, with their pages.No findings

    Why it is in this group

    • The name "list_courses" says "list": a word for reading.
    Description, as the server wrote it
    Every course and topic hub with its lessons, in order, with their pages.

    Annotations the server declares

    • title: List the courses
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • search_lessonsSearch Digital Gemology's free gemology lessons by topic or question (for example 'how is diamond cut graded', 'moissanite vs diamond', 'what is a bow tie').No findings

    Why it is in this group

    • The name "search_lessons" says "search": a word for reading.
    Description, as the server wrote it
    Search Digital Gemology's free gemology lessons by topic or question (for example 'how is diamond cut graded', 'moissanite vs diamond', 'what is a bow tie'). Returns each lesson's title, page, course, summary and quiz.

    Annotations the server declares

    • title: Search the lessons
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Tools listed without sign-in

Looked at Oct 31, 2026, 23:21 UTC, unchanged since Oct 31, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable
yes
HTTP status of an anonymous initialize
200
tools/list served without credentials
yes
Tools that change things, listed without credentials
0
Protocol version
2025-06-18
WWW-Authenticate on 401
not observed
resource_metadata in WWW-Authenticate
not observed
RFC 9728 protected resource metadata
not observed
Authorization servers
not observed
Legacy HTTP+SSE transport
no
Dynamic client registration
not observed
Client ID metadata documents
not observed

Findings

Matches of fixed checks, with the text they matched.

No check matched anything in these tool definitions. That is not a safety guarantee.

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http gemology-lessons https://digitalgemology.com/mcp/learn
claude mcp add --transport http gemology-lessons https://digitalgemology.com/mcp/learn

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__gemology-lessons__search_lessons",
      "mcp__gemology-lessons__get_lesson",
      "mcp__gemology-lessons__explain_term",
      "mcp__gemology-lessons__list_courses"
    ],
    "ask": [],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as gemology-lessons. Review it before you use it.

Pin

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/com.digitalgemology/gemology-lessons/verify?hash=9e7d3e4a6e061b721931fe4adbbf67635dfe21d063465ba3acd88ef96472edb1" | jq -e '.changed == false'

Pinned hash 9e7d3e4a6e06, from Oct 31, 2026, 23:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.digitalgemology/gemology-lessons/changes.xml

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Badge

anlyon.dev badge for com.digitalgemology/gemology-lessons
[![anlyon.dev](https://anlyon.dev/badge/com.digitalgemology/gemology-lessons.svg)](https://anlyon.dev/servers/com.digitalgemology/gemology-lessons)

Source: MCP Registry · repository. Synced Oct 31, 2026, 23:17 UTC.