Inside Bolt.new: WebContainer API Meets AI

Jòan Varvenne from StackBlitz takes us inside Bolt.new, a cutting-edge AI agent that runs full-stack Node.js apps directly in the browser using the WebContainer API. This talk shows how WebContainers make it possible for AI tools like Bolt to analyze, understand, and assist with your web projects in real time.

You’ll learn how AI can go beyond autocompletion, handling integrations with Supabase and Stripe, recovering from errors, and improving your workflow across frameworks like Remix and React. This session gives a behind-the-scenes look at the tech that powers modern AI agents and how to make them work for you.