I Indexed 67,000 Open-Source AI Agent Projects. Here's What's Actually Inside.

A few months ago I started a side project called AgentSkillsHub - a directory that indexes every meaningful open-source AI agent project on GitHub: MCP servers, Claude Skills, Codex Skills, agent tools, the works. Six months in, the database has 67,196 projects, refreshed every 8 hours. I expected to find a healthy ecosystem with a long tail. What I actually found was so lopsided I had to stop and write a 12-chapter book about it (free, CC BY-NC-SA, PDF ). This post is a 1,500-word version. If any of it surprises you, the source data is open and reproducible.