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virgiliojr94/book-to-skill Gains +989 Stars in a Day Turning Any Technical Book PDF Into a 5K-Token Agent Skill
book-to-skill converts PDF, EPUB, DOCX, HTML, Markdown, RTF and MOBI/AZW sources into structured agent skills, extracting frameworks, mental models, principles, techniques and anti-patterns into chapter files loaded on demand. Its performance docs claim a resident core of ~4K tokens plus one compiled chapter at ~1K — roughly 5,000 tokens total, versus dumping a 400-page book into context. It writes to the open Agent Skills standard, so the same SKILL.md works across Claude Code (~/.claude/skills), GitHub Copilot CLI (~/.copilot/skills) and Amp (~/.agents/skills); MIT licensed, 10,729 stars.
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