Builders Unscripted spotlights the stories behind real projects and the mindset that makes them possible: you can just build things.
In this episode, Romain Huet, Head of Developer Experience, chats with Matias Castello, Product Lead at Alchemy. Matias shares how his team uses Codex for code review and product work, how he builds side projects with Codex App Server, and why he keeps rebuilding Snapcat as a personal eval for each new model.
Chapters: 00:00 Intro 00:58 Bringing Codex to work at Alchemy 01:51 Using Codex for code review 08:04 Building side projects with Codex 18:51 Codex App Server projects 24:01 Computer use, GPT-5.5, and Snapcat 28:24 Advice for builders
