appraise-gemstone skillA
appraise-gemstone is agent-read markdown (skill) from pjt222/agent-almanac: Appraise gemstone value using the four Cs (color, clarity, cut, carat), origin assessment, treatment detection, and market factor analysis. Advisory educational guidance only — not a certified appraisal. Use when understanding factors that determine a gemstone's value, pre-screening stones before a professional appraisal, evaluating whether a seller's asking price is reasonable, learning gemstone grading methodology, or understanding how treatment status affects value..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
How to install
mdr add pjt222/agent-almanac/appraise-gemstone@v1.0mdr add pjt222/agent-almanac/appraise-gemstone@sha256:478071310d9aa0e8Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_l5pghp6lid6yfaod)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0 latest | 2026-08-17 | a784899 | 20,685 B | A | view · diff |
| v1.0 | 2026-06-05 | 33b561c | 20,656 B | A | view · diff |
| v1.0 | 2026-04-19 | a31852a | 20,636 B | A | view · diff |
| v1.0 | 2026-04-19 | e334ebd | 20,701 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (20685 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
pjt222/agent-almanac · 32 stars · license MIT · pushed 2026-09-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_l5pghp6lid6yfaod GET https://markdownregistry.com/api/v1/resolve?ref=pjt222/agent-almanac/appraise-gemstone GET https://markdownregistry.com/api/v1/blob/478071310d9aa0e8dd3086cccd511d4a31279ec8c0ab6823986e10d40bc17bf4