Verification

When you spin up a dev server or mutter "why isn't this working," this skill kicks in to trace the full user story from browser through API to data and back. It's not running unit tests. It's inferring what you're actually building, then checking each boundary with evidence: screenshots, terminal output, network logs, environment state. The reporting format is structured (what was checked, what was found, what's next), and it stops at the first broken boundary instead of piling on noise. Honestly most useful when you've wired up a feature across layers and need to confirm the whole thing actually works, or when something feels off but you're not sure which layer is lying to you.

Install to Claude Code

npx -y skills add vercel-labs/vercel-plugin --skill verification --agent claude-code