Converts books and documents (PDF, EPUB, DOCX, HTML, Markdown, plain text, RTF, MOBI/AZW with Calibre) into structured agent skills, extracting frameworks, mental models, principles, techniques, and anti-patterns. Use when the user wants to study a document through GitHub Copilot CLI, Amp, Claude Code, Hermes Agent…
World-class UI/UX reference distilled from Duolingo's PUBLIC design guidelines (design.duolingo.com) — color tokens, typography rules, and UX-writing/microcopy patterns — for frontend devs. Unofficial, not affiliated with Duolingo. Use when building or reviewing UI: choosing colors, type, button/header copy…