BookToSkill
book-to-skill is an open-source command-line tool that converts a technical book, supplied as a PDF, into a Claude Code "skill": a packaged, structured reference that the Claude Code assistant can consult directly while a developer works. Rather than a developer re-explaining a book's concepts to an AI assistant each session, or manually copying excerpts into a prompt, the book's material is pre-processed once into a searchable, reference-ready form that persists across sessions.
The tool is written in Python and was first published in May 2026. It has grown quickly, passing 12,700 GitHub stars within a few months of release, with 16 open issues and ongoing updates as of the most recent commit, indicating active maintenance rather than a one-off experiment.
book-to-skill sits in the Tools quadrant because it is a discrete utility that extends a specific piece of developer tooling (Claude Code) rather than a broader platform or a general technique. Its rapid star growth and continued activity are signals of strong community interest and a functioning open-source project, which is why it merits inclusion on the radar at all.
The ring is Assess rather than Trial or Adopt because star count, issue activity, and community attention describe external maturity, not confirmed first-person use. No one on this radar has yet run book-to-skill against a real technical book in an actual working session, so the placement reflects "worth exploring" rather than a validated workflow. A move to Trial would require converting a real book and using the resulting skill in genuine day-to-day work at least once.
