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 skills add jeffreytse/grimoire-core --skill apply-ink-illustration-techniquegit clone --depth 1 https://github.com/jeffreytse/grimoire-coreWrote 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/skills/jeffreytse/grimoire-core/apply-ink-illustration-technique)<a href="https://agentmods.dev/skills/jeffreytse/grimoire-core/apply-ink-illustration-technique"><img src="https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/apply-ink-illustration-technique/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/jeffreytse/grimoire-core/apply-ink-illustration-technique"><img src="https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/apply-ink-illustration-technique.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00046 | $0.01421 |
| Opus 5 | $0.00023 | $0.00711 |
| Sonnet 5 | $0.00009 | $0.00284 |
| Haiku 4.5 | $0.00005 | $0.00142 |
Grade A, and why
apply-ink-illustration-technique 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 11d 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 — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Apply Ink Illustration Technique
Produce professional black-and-white ink illustration by establishing line weight hierarchy, applying ink wash for tonal gradients, using dry brush for texture, and inking from large structural shapes to fine detail.
Why This Is Best Practice
Why best: Line weight hierarchy and a fixed large-to-small inking sequence are the two variables that separate professional ink illustration from flat, amateur linework — they convert a formalized, teachable process (rather than raw talent) into consistent three-dimensional results, and they prevent the irreversible inking accidents that occur when detail is inked before structure. Adopted by: Professional ink illustration is the primary medium for editorial illustration (The New Yorker, Harper's), comics (DC, Marvel, independent), and scientific illustration (GNSI). Inking order and line weight hierarchy are formalized in professional comics inking guides (Manning, DC Comics guides) and taught at the School of Visual Arts and RISD illustration programs. Lorenzo Mattotti and Bill Sienkiewicz are frequently cited as technically exemplary for mastery of line weight variation and ink wash. Impact: Line weight hierarchy — thick outer contours, thin interior lines — is the single strongest visual shortcut that makes flat ink drawings read as three-dimensional objects. Without it, all lines carry equal weight and the drawing flattens. Professional inkers plan their approach before touching pen to paper; spontaneous inking without a sequence produces uneven coverage and inking accidents that are irreversible in ink.
Steps
1. Select tools for the target technique
For crisp line art:
- Dip pens (Hunts 102, 107; Gillott 303): maximum variation from hairline to thick; require practice
- Technical pens (Staedtler Triplus, Micron): consistent width; good for architectural/technical illustration
- Brush pens (Pentel Pocket Brush): calligraphic; fast variation; used by many comic inkers
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.
- 11d ago First seen · 96 lines · 46 tokens per session scan A 184a91e66884
apply-ink-illustration-technique is a skill published in the GitHub repository jeffreytse/grimoire-core (4 stars, last pushed 22d ago), licensed MIT. It adds 46 tokens to every session and 1,421 once invoked, about $0.0002 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 2026-08-31.
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