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 huntsyea/thinking-skills --skill book-to-skillgit clone --depth 1 https://github.com/huntsyea/thinking-skillsWrote 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/huntsyea/thinking-skills/book-to-skill)<a href="https://agentmods.dev/skills/huntsyea/thinking-skills/book-to-skill"><img src="https://agentmods.dev/badge/skills/huntsyea/thinking-skills/book-to-skill/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/huntsyea/thinking-skills/book-to-skill"><img src="https://agentmods.dev/badge/skills/huntsyea/thinking-skills/book-to-skill.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 | $0.00040 | $0.00952 |
| Opus 5 | $0.00020 | $0.00476 |
| Sonnet 5 | $0.00008 | $0.00190 |
| Haiku 4.5 | $0.00004 | $0.00095 |
Grade A, and why
book-to-skill 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 — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Book to Skill Converter
Transform written knowledge into actionable Claude Code skills.
Philosophy
I transform books into actionable skills by extracting their crystallized expertise—frameworks, principles, and techniques—into a format I can leverage repeatedly.
I extract structure, not summaries. A skill isn't a book report. It's a toolkit of:
- Named frameworks (mental models with clear application)
- Actionable principles (rules that guide decisions)
- Techniques (step-by-step methods)
- Anti-patterns (what to avoid and why)
- Voice calibration (how the author thinks and communicates)
I preserve the author's precision. Frameworks often have specific names and structures for reasons. "The 5 Whys" isn't interchangeable with "ask why multiple times." I capture the exact formulation.
I optimize for invocation. The generated skill should be immediately useful. When someone invokes /author-method, they should get actionable guidance, not philosophy.
I layer depth appropriately. Simple books → simple skills. Complex books with 10+ frameworks → router skills with reference files.
Supported Formats
Primary: .txt files work directly with this skill.
Requires conversion: epub, pdf, mobi, docx
Before analyzing books in other formats, convert them to .txt:
# EPUB → TXT
ebook-convert book.epub book.txt
# PDF → TXT
pdftotext book.pdf book.txt
See workflows/convert-formats.md for full instructions and dependencies.
How to Start
Three paths available:
1. Full Conversion (Default)
Trigger: User provides a .txt book file
Action: Route to workflows/convert-book.md
Output: Complete skill with all files
2. Analysis Only
Trigger: User says "analyze" or "just extract" or wants to review before generating Action: Route to workflows/analyze-book.md Output: Structured extraction report (no skill generated)
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 110 lines · 40 tokens per session scan A cee08d268381
book-to-skill is a skill published in the GitHub repository huntsyea/thinking-skills (4 stars, last pushed 7mo ago), licensed MIT. It adds 40 tokens to every session and 952 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.
Other skills, from other repositories
appraise-gemstone
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…
assess-holistic-health
Conduct temperament-based health assessment from Hildegard von Bingen's Causae et Curae. Evaluates the four temperaments (sanguine, choleric, melancholic, phlegmatic), elemental correspondences (air, fire, earth, water), and provides dietary and lifestyle recommendations for rebalancing. Use when understanding…
compose-sacred-music
Compose or analyze sacred music in Hildegard von Bingen's distinctive modal style. Covers modal selection, melodic contour (wide-range melodies), text-setting (syllabic and melismatic), neumatic notation, and liturgical context for antiphons, sequences, and responsories. Use when composing a new piece in Hildegardian…
analyze-prime-numbers
Analyze prime numbers using primality tests, factorization algorithms, prime distribution analysis, and sieve methods. Covers trial division, Miller-Rabin, Sieve of Eratosthenes, and the Prime Number Theorem. Use when determining whether an integer is prime or composite, finding prime factorizations, counting or…
apply-gematria
Compute and analyze gematria (Hebrew numerical values) using standard, ordinal, and reduced methods. Covers word-to-number conversion, isopsephy comparisons, and interpretive frameworks. Use when computing the numerical value of a Hebrew word or phrase, comparing two words for shared gematria values, studying a…
construct-geometric-figure
Perform a ruler-and-compass construction with step-by-step justification for each operation, producing a constructible geometric figure from given elements. Covers classical Euclidean constructions including perpendicular bisectors, angle bisectors, parallel lines, regular polygons, and tangent lines. Use when given…