The Prompt FilesCase File № 20 · coding / design
The Overnight UX Overhaul
Receipts on file
| Agent | AI coding agent ("Yá") |
|---|---|
| Category | coding / design |
| Outcome | 50+ UX fixes completed overnight starting at 2 AM; each fix shipped with A/B variants and before/after videos; "weeks of work" done while he was offline |
| Filed | October 14, 2026 · documented in a public report on Instagram |
The Job
A Brazilian founder fed an AI agent a UX task he had first discussed on September 23, then set it to run at 2 AM São Paulo time. By morning it had worked through more than 50 correction items — including a login screen where the keyboard buried the input fields — building two variants of each fix, choosing the better one, and recording before-and-after videos in an auto-generated HTML report. He spent the night in meetings, at lunch with his wife, and picking up his kids, and woke up to what he describes as weeks of saved work.
The Prompt — try it yourself
From the files · The product
Your agent is capable of real work. It just never got set up.
The Installation File is the setup program your own AI agent runs — interview, memory, email + calendar, three working routines — inside your account, with your data never leaving it.
$199regularly $249
· the Set-Up Guarantee