Four Separate 'Compile Knowledge Into a Skill' Repos Are Trending Simultaneously — and One Publishes Its Token Math
The skill-packaging category took four of today's trending slots at once: virgiliojr94/book-to-skill (14,194 stars, +595 today), kangarooking/cangjie-skill (5,797 stars, +363, distilling books, long videos and podcasts), zhaoxuya520/reverse-skill (10,379 stars, +612), and mvanhorn/last30days-skill (56,055 stars, +660). book-to-skill is the one that shows its work: it compiles a PDF into a ~4K-token SKILL.md plus ~1K-token per-chapter files loaded on demand, reporting 24–51× fewer tokens than dumping the book and ~5K tokens resident versus 119K–256K for a context dump, at roughly $1 per book to convert (Docling at 1.5s/page for technical text). The shared thesis across all four: pre-compile the knowledge offline, pay retrieval cost only on the chapter you need.
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