Agent Skills Drift: Closing the Gap Between a Skill's Claims and Reality

A DEV Community guide explains how agent skills gradually fall out of sync with the external world they describe, a process called drift. It uses publishing-kit, a Claude Code, Codex and Antigravity skill that publishes one markdown article to five destinations, as its working example. The author found that a pre-flight check passed cleanly while a code review surfaced 22 issues, because the check only exercised a happy path. Version strings also proved unreliable, since installed snapshots lagged the repository by dozens of commits without any visible change in version number. The article recommends repeatable feedback loops, deliberate negative-test inputs, and consolidating duplicated logic to keep skills accurate over time.