Why it matters
Ruben Casas from Postman prompted a model to rewrite his blog. It built a search box with a blur animation and accessibility out of the box, without being asked. That was when he concluded the model writes better frontend code than he does. His question for the talk: if the models are this capable, why are most agent U
My takeaway: Beyond Components: Designing Generative UI for MCP Apps — Ruben Casas, Postman is an agent-security signal. The practical read is that autonomy, memory, tool permissions, and third-party integrations are the control surface that needs threat modeling and monitoring.