The Missing Layer: Design Taste in AI Agents — Hassan El Mghari, Together AI

Most people can spot a vibe coded app in two seconds and cannot say why. Hassan El Mghari names it: the purple gradient background, italics in the header, a scroll to explore prompt nobody asked for, all caps pills with wide letter spacing, too many emoji. He reckons you could list thirty such tells, and naming them is what lets you tell an agent to avoid them. That is most of what Hallmark does,