Justin Brian SmithI build software companies for a living — and write down everything that works. Eight published books on AI agents.
Field notes, not theory.
Every title, one shelf → Amazon Author Page · Tip: click a cover.
"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 eight business books written from inside the arena.
His 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.
Next up: Impossible To Say No — integrations as a growth strategy — plus Claude AI for Business: The 10X Playbook and ChatGPT for Business: The 10X Playbook, a practical pair for turning AI from a chatbot into a business operating layer.
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 · InsuranceWe build complete Micro SaaS products in 10 days or less — starting at $10k. Idea to shipped, fast.
Services · SaaS DevelopmentEarly 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.
