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The Builder's Journal

One email a week from a company run by one person and AI. What shipped, what broke, and what it taught me - written for domain experts building real software.

Free. One email a week. Unsubscribe anytime.
By Balaji Renukumar, founder of 1nicorn
WeeklyOne email, every week. Never more.
Built, not theorisedEvery piece comes from something that actually shipped.
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Recent issues

Run a Safe Local and Cloud Agent Mix

Pro, about 45 minutes. Decide which automated coding jobs belong in the cloud, set up both tracks, and hand a job off without leaking a secret or stranding the work.

Oct 2026 - 11 min - Supporter

The coding agent in the cloud cannot see your disk

A free credit nearly moved my whole build pipeline to the cloud. The cloud agent turned out to be a different machine - and only about one in six of my jobs fit it.

Oct 2026 - 9 min - Supporter

Build a Needs-you queue: one clarification queue every module can ask through

A shared human-in-the-loop queue so no feature in a modular platform ever guesses or stalls on a missing fact.

Oct 2026 - 14 min - Supporter