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 5.5 | $0.00016 | $0.00381 |
| Sonnet 5.5 | $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 1mo 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.
- 1mo 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 (3 stars, last pushed 9mo ago), licensed MIT. It adds 40 tokens to every session and 952 once invoked, about $0.0002 per session on Opus 5.5. 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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