Build Better Agent Skills with Test-Measure-Refine
Most agent skills fail for a boring reason: we edit prompts, rerun once, and call it “better.”
Anthropic’s latest Skill Creator update pushes a more engineering-style loop: test first, measure behavior, then refine. If you build internal agent workflows, this is the shift that actually matters.
This post rewrites the official announcement into a developer workflow you can run every week.