add-skill

Builds one production-quality skill in skills/<name>/, eval-first, in whatever repository you are currently in. Read references/skill-authoring.md and references/evals.md once per session before starting — they are the rulebook this workflow enforces (repos scaffolded by create-skill-repo also carry them as docs/). If invoked as /add-skill <args>, treat $ARGUMENTS as the skill name or idea to scope in step 1.

When NOT to use

• Creating a new skills repository → create-skill-repo.
• Turning a research pack into one or more skills → skill-from-research (it drives this workflow per skill after distilling the pack).
• Infrastructure work (hooks, CI, validators) → plain editing, PR-level scrutiny.
• A "skill" that merely restates what the model already does well → don't build it; a skill must fix a specific observed failure.

Workflow