Superconductor Blog

How to Make Claude Code use the browser to QA its own work

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Did you know that Claude Code can use the browser to QA its own work?

Here's a quick guide.

  1. Add the Playwright MCP
claude mcp add playwright -- npx -y @playwright/mcp@latest
  1. Tell Claude how to use your app, either in CLAUDE.md or in your first message. For example, you might write "The app is running at https://example.com, and you can use the Playwright MCP to access it."

When the agent decides to use the Playwright MCP, it will be able to:

  • Open Chrome and navigate to your application.
  • Click links and type text to interact with your interface.
  • Take screenshots and "view" them to see if things look right.
  • Check the Javascript console for errors.

This approach transforms Claude Code into a powerful QA tool that validates your user-facing changes through real browser interactions.

The browser automation is a little slow, but you don't have to watch it work. With Superconductor, you can launch multiple Claude Code instances in parallel for more comprehensive testing.

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