A playbook for the AI era

The Product
Principal

AI agents now handle execution. The person who directs them — the Product Principal — is the most important person in software.

Free. No credit card. Pay what it's worth after you've read it.

“Execution belongs to the agents.
Judgment and evaluation belongs to you.”

The thesis

AI agents now handle execution. They write code, design interfaces, and run processes that used to require entire teams. The person who directs them — the Product Principal — is the most important role in software. And the product manager is best positioned to fill it, because discovery has always been the product manager's domain, and discovery is the hardest part to automate.

What's inside

Introduction
Ch 1: The Merge
Ch 2: The Abstraction Ladder
Ch 3: The Constraints Shift
Ch 4: Discovery Doesn't Go Away
Ch 5: Judgment Is the Job
Ch 6: Verification
Ch 7: Why the Product Manager Makes the Best Fit
Ch 8: AI as Tutor
Ch 9: Building as a Product Principal
Ch 10: Designing as a Product Principal
Ch 11: Deciding as a Product Principal
Conclusion

Written by someone who's done it

13 years as a product leader. This isn't theory — it's the framework that emerged from making the transition to building solo with AI agents.

Pricing

The book is free. If you finish it, the last page has a $9.99 payment link. No paywall. No obligation. The $9.99 is only for people who read the whole thing and felt it was worth it.

Ready to read it?

Free. $9.99 on the last page — only if you finish it.