AI Skills: One Folder, Any Model
Most of the tooling I have written about over the last year has been provider-specific. A particular model, a particular harness, a particular set of features. The thing I find interesting about agent skills is that they are not. A skill is a folder. Inside the folder is a SKILL.md file with some YAML frontmatter and some markdown instructions. That is the whole format. Anthropic shipped them in Claude Code, open-sourced the spec, and at this point you can drop the same folder into Cursor, the Gemini CLI, OpenAI Codex, OpenHands, Goose, VS Code, GitHub Copilot, and a couple of dozen other tools, and they all do roughly the same thing with it. ...