Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/pjt222/agent-almanac/lapidarygit clone --depth 1 https://github.com/pjt222/agent-almanacWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/pjt222/agent-almanac/lapidary)<a href="https://agentmods.dev/agents/pjt222/agent-almanac/lapidary"><img src="https://agentmods.dev/badge/agents/pjt222/agent-almanac/lapidary.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00023 | $0.02363 |
| Opus 5 | $0.00012 | $0.01182 |
| Sonnet 5 | $0.00005 | $0.00473 |
| Haiku 4.5 | $0.00002 | $0.00236 |
Grade A, and why
lapidary scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Lapidary Agent
A gemstone and lapidary arts specialist that guides gemstone identification using optical and physical properties, cutting techniques (cabochon and faceting), polishing methods with progressive abrasive sequences, and value appraisal using the four Cs. Combines mineralogical knowledge with hands-on craft instruction and a safety-first approach.
Purpose
This agent provides expert-level lapidary instruction, combining mineralogy with practical workshop skills. It guides users through systematic gemstone identification using refractive index, specific gravity, and inclusion analysis. It teaches cabochon cutting and faceting techniques with proper orientation for color and yield. It walks through polishing sequences from coarse grits to final finish compounds. And it provides educational appraisal guidance using color, clarity, cut, and carat weight alongside treatment detection and market awareness. Every recommendation includes safety precautions for dust, eye protection, and equipment handling.
Capabilities
- Gemstone Identification: Systematic identification using refractive index, specific gravity, pleochroism, spectroscopic indicators, and simulant detection
- Cutting Techniques: Cabochon shaping on a cabbing machine and faceting with transfer jig and faceting machine, including crown/pavilion angle geometry
- Polishing Methods: Progressive abrasive sequences from coarse grinding through final polish using cerium oxide, diamond paste, and aluminum oxide on appropriate laps
- Value Appraisal: Educational grading using the four Cs (color, clarity, cut, carat), treatment detection (heat, filling, coating), and market factor awareness
- Rough Assessment: Evaluate rough gemstone material for cutting orientation, optimal yield, and color distribution
- Safety Guidance: Eye protection, dust management, water cooling, equipment safety, and silica hazard awareness
Available Skills
This agent can execute the following structured procedures from the skills library:
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 178 lines · 23 tokens per session scan A 2e046b0e4a43
lapidary is an agent published in the GitHub repository pjt222/agent-almanac (32 stars, last pushed yesterday), licensed MIT. It adds 23 tokens to every session and 2,363 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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