Skills Are the Most Underrated Feature in Agentic AI

Agent Skills are folders of instructions, scripts, and resources that agents can discover and use on demand. They’re an open standard that works across Claude, GitHub Copilot, VS Code, Cursor, and OpenAI’s Codex. A skill is just a directory with a SKILL.md file at its root, optionally accompanied by scripts, reference docs, and templates. That’s it. No fine-tuning, no model retraining, no API integration work. You write instructions in Markdown, put them in a folder, and your agent gets a new capability. A