Originally published on AI Tech Connect.
What you need to know Every coding agent you use — Claude Code in your terminal, Codex in your editor, a bespoke agent you built on the API — is only as good as the instructions you feed it. Most teams feed those instructions the slow way: someone pastes the same nine-step deployment checklist into chat for the fourth time this week, or re-explains the house style for a database migration to an agent that has no memory of the last three times. That repetition is a signal, and the thing it is signalling is a skill. An agent skill is a small, self-contained package that teaches an agent how to do one job well. At its heart sits a single file, SKILL.md: a YAML frontmatter block that names and describes the skill, followed by a Markdown body of step-by-step instructions. The format is defined…
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