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. #WebContainers #AIinDev #BoltNew #StackBlitz #FrontendAutomation #Remix #React #FrontendNation #FEN2025 Get a glimpse of the future where full-stack development happens in your browser with help from a smart agent that actually gets your code. 💻 Read our blog: https://frontendnation.com/blog 🎟️ Sign up for Frontend Nation 2026 to stay updated: https://frontendnation.com/ 💜 Special thanks to all our event sponsors for 2025: Diamond Sponsors AG Grid: https://www.ag-grid.com/charts/?utm_source=frontend-nation&utm_medium=logo&utm_campaign=frontend-nation-sponsorship-2025 BitterBrains: https://bitterbrains.com/ Vue School: https://vueschool.io/ Certificates.dev: https://certificates.dev/ InstantDev: https://instantdev.io/ Platinum Sponsors Cypress: https://www.cypress.io/ Sentry: https://sentry.io/signup/?utm_source=event&utm_medium=sponsored-event&utm_campaign=general-fy26q2-evergreen&utm_content=signup-frontendnation2025-signup JavaScript Cert: https://certificates.dev/javascript Vue.js Cert: https://certificates.dev/vuejs/ Angular Cert: https://certificates.dev/angular React Cert: https://certificates.dev/react Nuxt Cert: https://certificates.dev/nuxt TypeScript Cert: https://certificates.dev/typescript Agorify: https://agorify.com/ Gold Sponsors Mastering Nuxt: https://masteringnuxt.com/ Mastering Pinia: https://masteringpinia.com/ LevelUp DX: https://levelupdx.com/