Skip to content
braincell.sh
Field notes

The braincell blog

Engineering, product, and the future of agentic software. The first posts go live as soon as the first cohort of founders ships.

Product

How braincell ships a working product before lunch

The five-step agent loop (describe, design, build, verify, deploy) and the snapshot/rollback contract that keeps it honest.

Q3 20268 min
Engineering

Why we run every project in a Vercel microVM

Static previews lie. A real sandbox runs your install scripts, hits real environment variables, and surfaces real failures before deploy.

Q3 202611 min
Research

Routing between Opus 4.7, Sonnet 4.6, and Haiku 4.5

When to send a turn to the biggest model in the room, when to drop to Haiku for a tool call, and how to keep credit usage predictable.

Q3 20266 min

Get the first post in your inbox.

One email when the blog launches. No newsletter spam, no drip campaigns, no "6 secrets every founder needs to know."

Save my spot

Skip the wait.

Don't want to read about shipping? Just ship. The first project is on us.

10 free credits on signup. No credit card.