A working prototype 15 minutes after the spec, and a client who did the maths
A Cambridge machinery builder asked where AI could help, and we started with its spare-parts shipping. We watched its shipping coordinator re-enter the same details four to five times across separate systems. The same day we wrote a specification, and about 15 minutes after it was saved an AI coding agent had a working prototype running, with orders, carrier choice and packing lists. The client liked the dashboard but declined: at its shipping volume, the payback wasn't there. A prototype is cheap now, so do the payback sums on your own volumes first.