Turn any technical book, document folder, or collection of sources into a unified agent skill — ready to study, reference, and use while you work in GitHub Copilot CLI, Amp, or Claude Code. Why · What it generates · Beyond books · How it works · Usage · Install · FAQ · Performance · Architecture · Changelog 24×–51× fewer tokens than dumping the book into context to answer one question, measured on real books (how it's measured). How it works, in 3 steps: - Point it at a file, folder, or glob — /book-to-skill ./my-book.pdf - It distills the book into a skill — frameworks, decision rules, anti-p