AI React Playground

Generate React UI in the browser.

Web Cursor is a browser-based AI React playground. It creates real React project files, runs them in an isolated preview sandbox, and uses runtime feedback to repair the result.

Start building How it works

src/App.tsx

export default function App() {
  return (
    <main className="product">
      <h1>AI writes React.</h1>
      <p>Sandbox runs it.</p>
      <p>Errors become feedback.</p>
    </main>
  );
}

A playground with a real agent loop

The output is not treated as finished until it has been compiled and executed. The preview sandbox reports what actually happened, then the agent can continue editing project files.

Prototype React UI from a prompt

Describe a dashboard, landing page, tool, or interactive component and let the agent create a runnable React project.

Turn Figma frames into implementation context

Connect Figma, paste a node-specific design URL, and let the agent inspect layout facts before writing code.

Repair with real browser feedback

Install errors, dev server failures, and browser runtime errors become feedback for the next agent turn.

Built for runnable React, not snippets

Every generated app is represented as a complete project. The browser workbench can compile it, render it, and feed concrete failures back into the conversation.

Project format: Complete Rsbuild React TypeScript files
Runtime: WebContainer + browser iframe preview
Feedback loop: Preview result to agent repair
Model boundary: LLM key stays on the server