Before you build
Find out what to build, or how well your agent performs, before you commit a budget.
Square63 builds products, gets AI agents ready for real users, and stabilizes MVPs that have outgrown their code.


Building for companies in the US, UK, Australia and Canada since 2011
Each stage has a service with a set scope and a typical duration.
You have an idea for a product or an AI feature, but no scoped first project.
Discovery sprintYour agent works in demos and you need to know how it holds up before real users see it.
AI agent auditYou need a product built and shipped.
Custom softwareAI products and agentsThe MVP has customers and the code is holding it back.
MVP stabilizationThe product works and you need more engineers on it.
Dedicated engineersEvery engagement is quoted in writing before it starts, and ends with something you keep.
See all sixFind out what to build, or how well your agent performs, before you commit a budget.
New products, replacements for old systems, and AI features taken from prototype to production.
Stabilize a product that already has customers, or add senior engineers to the team.
Tell us what exists today, who uses it and what you want to be different. We’ll reply with the service we’d start with.




The stack behind the projects above.
Pick what you need and leave your email. Here is what happens next.