# Skills # Skills Packaged, versioned know-how any agent or engineer picks up: how to integrate a partner, how to model data, how to test an interface. A skill is a unit of instruction with a version, not prompt text pasted into an agent definition. An agent composes the skills a task needs, and a skill improved once improves every agent that composes it. Writing knowledge down once and reusing it is what stops it evaporating when a person leaves or a system changes. The county onboarding runbook documented under bringing a jurisdiction online is a worked example: ten stages, each its own skill, run in sequence with an intake at the start and interruption only on a genuine blocker. - Packaged, versioned know-how — how to integrate a partner, how to model data, how to test a design — that any agent or engineer picks up. Knowledge is written once and reused everywhere, so it compounds instead of evaporating when a person leaves or a system changes. Packaged, versioned know-how — how to integrate a partner, how to model data, how to test a design — that any agent or engineer picks up. Knowledge is written once and reused everywhere, so it compounds instead of evaporating when a person leaves or a system changes.