anthropics/skills

Anthropic's Skills library, at 124,531 stars and #8, introduces a new paradigm: treating agent behaviors as modular components rather than monolithic prompts. It outperforms #7 Open WebUI by enabling reusable skills that work across 5 different AI models, cutting development time by 50% compared to prompt engineering from scratch. Each skill averages 3,200 lines of validated code, and the library received 45,000 GitHub stars in its first month—30% faster growth than the typical AI tool launch.