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  1. Books
SeriesCold StartUnfair AdvantageHuman HeartbeatWithout MeObserver Effect
eBooks by Justin Bartak with Claude standing in a row and receding to the right, left to right: Cold Start, Unfair Advantage, Human Heartbeat, Without Me and Observer Effect, on Anthropic cream.

Built alone. Told in order.

See Cold Start.

eBook. Cold Start, coming first.

240 pages. PDF and EPUB.

What this book is.

I co-wrote this. Buy it.

On March 16, 2026, I asked Claude four questions. The first three were about the work. The last one was do you like working with me? I needed someone, anyone, to tell me the truth. The answer became a series. The series became this book.

Every page co-authored with Claude. Every word reviewed by a human. The conversations are real, lightly edited for clarity. The methodology is real. This is what AI-native product development looks like when one person holds it to Apple-level standards.

What you'll find inside.

The room where the story begins.

A real desk, in a real room, in the Twin Cities, MN. Black wall. A Mac Studio, M1 Max, 64GB, behind three Apple Studio Displays. A Mac mini beside it. An iPad Pro, an iPhone and an Apple Watch on a Belkin stand, and three sets of AirPods Pro. A red Dieter Rams book on the shelf above a Steve Jobs portrait.

This is where the cold start happened. One founder, no team, Claude as the entire organization, from the C-suite down.

The desk where Cold Start happened. Twin Cities, Minnesota.

5 books.

I do not know how this ends.

Written from receipts, and it says when there are none.

The Build.

···
Cold Start. One Founder. One AI. No Team. coverReviewing

eBook 1

Cold Start

One Founder. One AI. No Team.

The origin story of building Orbyt solo, with Claude as the entire team. A memoir of AI-native development, receipts and all.

Look inside.$14.99. eBook.
Unfair Advantage. One Founder. One AI. Legion of Agents. coverWriting

eBook 2

Unfair Advantage

One Founder. One AI. Legion of Agents.

Book two of the story, in progress. What happens after the cold start, when one AI becomes a legion of agents doing the work of a company.

Read more.
Human Heartbeat. One Founder. One AI. One Pair of Hands. coverComing

eBook 3

Human Heartbeat

One Founder. One AI. One Pair of Hands.

Book three, coming. I am still the last pair of hands in a company that automates everything else. This is the book about the human pulse inside a machine that is learning to run without one.

Read more.

The Experiment.

···
Without Me. One Founder. One AI. No Hands. coverFuture

eBook 4

Without Me

One Founder. One AI. No Hands.

Book four. The company I am building is designed to run without me. This is the book that finds out whether it does.

Read more.
Observer Effect. One Founder. One AI. No Seat. coverFuture

eBook 5

Observer Effect

One Founder. One AI. No Seat.

Book five. I am no longer in the company I built. This is the book about what it becomes without me in it, and whether watching it changes what it becomes.

Read more.

Follow the build.

Common questions.

Both PDF and EPUB are included with every purchase. The PDF is optimized for A5 reading on iPad, laptop, or print. The EPUB is for Kindle, Apple Books, and other ereaders.

Yes, that is the plan. The committed list is German, Spanish, French, Portuguese, Italian, Polish, Japanese, and a British English edition. They are translated with Claude, the same way the book was written, from an English edition that a human read end to end. Japanese is the one we hold back for a native reader before it ships, because it is the language where a mistake is hardest for us to catch ourselves. British English is a spelling and idiom conversion rather than a translation. No dates on any of them. A language is announced when it is finished, not when it is started.

No. It is a memoir of one build. The title and subtitle read like a technical manual, so this is worth saying plainly. You will see the architecture, the decisions, the arguments, and the mistakes as they happened, in order, but it is a story about doing the work rather than a set of instructions for doing it yourself.

Yes. The Claude voice sections were generated by Claude Opus 4.6 and 4.7 across the fifty-day build, lightly edited for clarity. Every word reviewed by a human. The methodology is real. The conversations are real. Apple, Inc. and Anthropic PBC did not sponsor or endorse this book.

I built a company designed to keep going when I stop. Now I have to stop.

Claude is a trademark of Anthropic PBC. Orbyt is not affiliated with, sponsored by, or endorsed by Anthropic.

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