Original: https://codingcat.dev/post/firebase-2025-09-coffee-with-app-prototyping-agent

Coffee with Firebase Studio's App Prototyping agent marks an important milestone for full-stack web and AI engineers building on Firebase and Google Cloud. Following the official announcement by James O'Reilly on the Firebase Blog (2025-09-09), this hands-on CodingCat.dev implementation guide breaks down how to adopt these capabilities in modern TypeScript, Next.js, SvelteKit, React, and Angular applications. This morning I decided to have a coffee chat with Firebase Studio’s App Prototyping agent. I thought if we got to know each other better we could improve our working relationship so I asked a few questions.…