Claude-skills is an open-source collection of 354+ reusable instruction modules ("skills") designed to extend AI coding agents like Claude Code, Cursor, and others with domain-specific expertise across engineering, marketing, compliance, and operations. It's gaining traction on GitHub trending with 394 stars and appears positioned as a modular framework for prompt engineering and agent configuration.

One insight: This is a prompt/config library, not a standalone product—zero evidence of monetization, user adoption metrics beyond stars, or repeat founder track record; fast follower could fork and rebrand in days, making competitive moat negligible.