webapp-testing (visual loop)

The highest-leverage thing you can hand a design agent: eyes. Opens a real browser, screenshots every page, compares to a reference, iterates.

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Last updated: June 22, 2026

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Install Command

npx skills add anthropics/skills --skill webapp-testing

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design

testing

playwright

feedback-loop

method:skills-cli

What it gives. The visual feedback loop. The agent opens a real (headless) browser, screenshots each page across viewports, compares against your target and iterates the layout until it matches. Without it you're trusting a blind model; with it the model grades its own work. Pairs with the Playwright MCP for full automation.

How to fire it.

Open the app in a headless browser, screenshot every page at 1920 and 390 wide, then compare to my reference and fix the gaps.

Payoff. Design stops being guesswork and becomes a measured loop.

Optional companion — the Playwright MCP:

claude mcp add playwright -s user -- npx @playwright/mcp@latest

webapp-testing (visual loop)

AI Skill Market Insights

Quick Start

Install Command

TEAR & SHARE

Tags

Raycast

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