Skills give Claude one capability. Plugins install a complete toolkit — bundled skills, specialized agents, and workflows — in one command.
Knowledge skills that auto-trigger, plus slash-command workflows you invoke
Reviewer and worker agents that run as part of your pipeline
Add the marketplace once, install the plugin, done — updates included
Skills follow the open agent-skills format — installable for Codex, Gemini, and more
AI agents write and review the code. The human reviews what they can actually judge: the rendered result. This plugin makes the visual deliverable — mock options before a line of code, before/after screenshots at phone and desktop widths, live-URL proof after deploy — the unit of review at every stage of an agent-driven pipeline. An adversarial reviewer agent fails any change whose visual evidence is missing, stale, or fabricated.
Core methodology + /mock-first, /visual-gate, /visual-report workflows
visual-evidence-reviewer: the CI gate that verifies evidence actually exists
Install — step 1, add the marketplace:
claude plugin marketplace add Stevekaplanai/visual-first-design
Step 2, install the plugin:
claude plugin install visual-first-design