90 Claude Skills across 14 professions — the largest open-source professional skills library for Claude Code. Covers product management, marketing, engineering, data, design, Figma, legal, finance, HR, sales, operations, research, and more. Each skill is a structured SKILL.md file that teaches Claude how to produce professional-grade outputs for recurring workflows. Install the full library in one command or pick individual profession bundles. 210+ GitHub stars, MIT licence, open for community contributions.