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An enquiry arrives on Friday afternoon. Nobody answers it until Tuesday.
Bookings live in one app and invoices in another. Someone types them in twice.

Zero Sum fixes one costly workflow at a time, inside the tools you already have. No rip and replace.
Read-only access comes first. You and Devin agree the tests before anything is built, and you approve each milestone before it starts.
Operations first: one workflow, working, from $5,000. Or start with the website your customers see: an audit from $1,500.



Operations: the enquiry that waits until Tuesday, the invoice typed in twice, the report only one person knows how to make. Fixed one at a time, toward a full business operating system.
Websites: an audit that says what holds the site back, in the order to fix it. Then a fix sprint or a redesign, if you want one.
Method
Zero Sum looks before it touches. Write access comes later, only for a build you approved.
How the work really runs gets written down, so it no longer lives in one person's head.
Numbers in a report point to where they came from. Nothing is estimated and passed off as measured.
AI agents do parts of the build. Devin checks the result before you see it, and you approve what ships.
You'll talk to Devin, who does the work. AI agents do parts of the build; Devin checks the result before you see it.