I build software companies for a living — and write down everything that works. Five published books on AI agents.
Field notes, not theory. Two more on the way.
Inner Circle members read both before anyone else — early chapters, launch pricing, and free ebook editions. Join free →
Integrations are the most underrated growth channel in software. This is the playbook for building them the right way — the partnerships, the engineering, and the distribution physics that make your product the one customers can't rip out.
A children's series that turns CBT — cognitive behavioral therapy — into big, colorful adventures. Because the biggest feelings deserve the biggest dinosaur. Written and illustrated by Justin.
"I don't write theory. I write down what worked, what broke, and what I'd do differently — while the bruises are still fresh."
Justin Brian Smith is the founder and CEO of Contractor+, the operating system for build and service contractors — and the author of five books written from inside the arena.
His business books aren't recycled frameworks. Agentic Software came from shipping AI agents into production. Cookie-Led Growth came from discovering that delighting humans converts better than cold outreach. The Perpetual Raise came from running fundraising like a pipeline instead of a panic. The High-Growth Contractor came from serving thousands of contractors and noticing what the winners do differently.
And Spread Game? A federal prison cookbook — 100+ microwave masterpieces from the commissary list, born in the same chapter of life where Contractor+ was first sketched on paper. The comeback is the whole point.
Next up: Impossible To Say No — integrations as a growth strategy — and a children's series that teaches kids the mental tools most adults wish they'd learned at six.
Everything in the books gets pressure-tested here first.
The OS for build & service contractors — estimates, invoicing, payments, scheduling, and growth in one app.
SaaS · Field ServicesA free tool for individuals and couples to mood-journal and process thoughts and feelings — better thinking, better life.
AI · Mental WellnessGenetically appropriate meals the whole family will actually eat — optionally powered by your labs and DNA methylation results.
AI · NutritionA fully autonomous content engine for high-growth startups — research, writing, visuals, and SEO from a single keyword.
AI · ContentPhysical-mail one-time passwords for high-trust identity verification — postcards as an out-of-band auth factor.
Security · IdentityAI-powered insurance coverage intelligence — turning dense policy language into clear decisions.
AI · InsuranceEarly access to launches, free ebook editions, first-chapter drops, and behind-the-scenes notes from building and writing. No noise — I only write when it matters.
