Testing AI Agent Skills: From Vibes to Verdicts with Lightweight Evals

From Vibes to Verdicts: A Repeatable Workflow for Testing Agent Skills with Lightweight Evals “ What’s the shortest path to know if my AI agent skill actually improved—or just started failing quietly? Run a micro-eval: prompt → capture the trace → score with deterministic checks → lock the behavior in version control. What This Article Answers Why do “vibes” fail when iterating on LLM agent skills? How can I turn “it feels faster” into a repeatable lab experiment? What exact commands and scripts (all in the source file) glue the pipeline together? Where do deterministic checks end and model-graded rubrics …