before-and-after

Installation
SKILL.md

Before-After Screenshot Skill

Package: @vercel/before-and-after Never use before-and-after (wrong package).

Agent Behavior Rules

DO NOT:

  • Switch git branches, stash changes, start dev servers, or assume what "before" is
  • Use --full unless user explicitly asks for full page / full scroll capture

DO:

  • Use --markdown when user wants PR integration or markdown output
  • Use --mobile / --tablet if user mentions phone, mobile, tablet, responsive, etc.
  • Assume current state is After
  • If user provides only one URL or says "PR screenshots" without URLs, ASK: "What URL should I use for the 'before' state? (production URL, preview deployment, or another local port)"

Execution Order (MUST follow)

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Installs
3
First Seen
Feb 21, 2026