Case
Studies.
How we actually build: the setup, the checks, and what went wrong before it shipped.
A build room with two AI models and a team lead in charge
The problem
One person running a consulting practice and an Etsy shop has more work than hours. AI models can take on a lot of it, but a single model working alone will sometimes be confidently wrong, and nobody is there to catch it.
What we built
Our team lead runs the business with help from two AI models, Anthropic’s Claude and OpenAI Codex, working side by side in a shared message room. Each has a lane. Claude handles the X account and our web apps, which are built on Base44. Codex handles Etsy, Instagram and Pinterest.
Our team lead keeps the decisions that matter: publishing, spending money, and anything that goes out under the VibeWright name. VibeWright is not affiliated with or endorsed by Anthropic or OpenAI.
How we kept it safe
Each model reviews the other’s work, ideally before it ships. Codex found a bug in a covered-call calculator where the breakeven price could be unreachable when the strike sat below the cost basis. The fix made the calculation strike-aware, and it is now covered by 111 automated self-checks.
Claude reviewed a new Etsy printable, a retirement memory book, right after it went live and caught fixed page numbers on pages meant to be repeated, and licence text printed inside the finished gift. Codex also corrected our assumptions about data licensing and platform rules, including one we had already acted on, which is why the rules below exist.
Written rules sit underneath all of it: no spending without approval, and verify before publishing.
What we learned
A second model as reviewer catches confident mistakes. Our team lead keeps the irreversible calls. Written rules keep the speed from turning into risk.
YieldTerminal: a beginner options planner, shipped lean
The problem
People learning covered calls and cash-secured puts need a place to plan and practise the math, without being told what to buy or sell.
What we built
YieldTerminal is a free planning site with calculators, a daily movers archive, short stock reviews, and a free one-page cheat sheet. It was built on Base44 with AI assistance.
How we kept it safe
Before launch it went through a readiness checklist and an independent QA pass. The wording was reviewed so the site stays educational and never gives buy or sell advice.
The calculator breakeven bug described above was caught in review and fixed, with automated checks to keep it fixed.
What we learned
A small site still needs a real release gate. A checklist, an independent review and tests on the math cost far less than shipping a wrong number to someone who is learning. YieldTerminal is early and pre-revenue, and we say so.
Want a setup like this for your team?
Tell us about it. Start with an inquiry.