A basic example skill that demonstrates the fundamental pattern: user says "hello world", the skill grabs system info via a Node script, then formats a response using a template. It's essentially the minimal viable structure for understanding how Claude Code skills work. If you're building your first skill or need a reference implementation to copy from, this does the job. Nothing fancy, just the skeleton of trigger detection, script execution, and templated output. Think of it as the equivalent of println debugging, but for learning the skill architecture.
npx skills add https://github.com/bas/agent-skills --skill hello-world