Send your own testing agents into the app you’re building. They drive the real running app — not a simulation of it.
A test against a mock proves the mock works. Your agents open the app itself — the same pages, the same buttons, the same forms a user touches — and report what actually happened.
Each run is a plain sequence of steps — an agent walking the app the way a user would, and writing down what it found.
The regressions you’d find at 2am — the button that stopped responding, the total that rounds wrong — found before the commit lands.
Sign in and send a testing agent into the app you’re building.