What problem does it solve? Agent features often ship as untested scripts with no trigger routing, no quality bar, and no regression protection. This Skill enforces a 15-item checklist that turns any raw feature into a properly-skilled unit with an eval contract, cross-modal quality gate, tests, and resolver entry. ## Core Features & Use Cases - Idempotent improvement runs: Running on an existing skill detects the delta (bug fix, new input, quality pass) and edits surgically instead of rewriting from scratch. - Cross-modal eval gate: Three frontier models from different providers score the output against a skill-specific eval contract before tests lock in behavior. - No-regression law: Every edit must score at or above the previous iteration's eval receipt, and schedule-backed skills must re-run a representative task before shipping. - Use Case: After fixing a weekday-formatting bug in a travel briefing skill, run skillify to add a regression test, a hard rule in SKILL.md, bump the version, and verify the full checklist still passes. ## Quick Start Ask the agent to skillify your feature by saying "skillify this" and pointing it at the feature's code or existing skill directory.