
book-to-skill
Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work.
The Lens
By Erik Loyd, SaaS CEO and former COO/CFO of an AWS Premier Partner.
Updated Aug 2026
Feed it a technical book and it hands back a skill your coding agent can actually search. The pitch is token economy: instead of dumping 400 pages into context and paying for every one of them, the generated skill loads only the chapters relevant to the question. The project claims 24x to 51x fewer tokens per answer. MIT licensed, runs entirely on your machine, no API key.
Setup is three commands: pip install, register the skill, point it at a file. Format support comes through optional dependencies, so PDFs want pdftotext or pypdf and EPUBs want ebooklib. Nothing gets uploaded. Output works with Claude Code, GitHub Copilot CLI, and Amp.
The obvious use is reference material your agent keeps guessing about: language specs, framework books, internal standards documents. Solo and small teams: free, and no reason not to try it on one book first. Medium and large teams get more out of converting shared internal docs once and committing the result.
The catch is legal, not technical. The MIT license covers the converter, not the book you put through it. Turning a purchased title into a skill you commit to a shared repo is redistribution, and the tool will happily let you do it. The other limit is mechanical: a scanned image-only PDF has no text to extract.
Free vs Self-Hosted vs Paid
fully freeWhat's Free
Everything. MIT license, Python package, optional GUI. No API key, no account, no metered step. Extraction and generation both run locally.
Deployment Cost
$0. This is a local CLI. It runs on the laptop you already have, and the output is plain markdown files you commit to a repo.
The Real Cost
The books. The tool is free; the reference material you feed it usually is not, and licensing that material for team-wide use is your problem to solve, not the tool's. Add an hour or two per source for dependency setup and checking that the chapter split came out sane.
The Savings Case
If the alternative is pasting a large document into context on every question, the token math is the whole argument. A single 400-page book in context repeatedly is real money on a metered API; the skill format reads only what it needs.
Free and open source with no metered step at all. The only real cost is licensing the source material you convert.
What to do by team size
- Solo
- free; convert one book and see if the chapter split holds up
- Small team
- free; commit the generated skills so the whole team shares them
- Medium team
- free; best value is converting internal standards docs, not published books
- Large team
- free; check with legal before committing converted commercial titles to a shared repo
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License: MIT License
Use freely, including commercial. Just keep the license.
Commercial use: ✓ Yes
About
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- Leutenegger (User)
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