From GUI to Soul — What One Month of Building a Lead Agent Taught Me About AI Design

A one-month experiment in agent behavior design, and why the most important interface you'll ever design has nothing to do with screens. April 2026 · Experiment & reflection · Agent Design · Behavior Layer · UX Shift I didn't set out to build a lead generation agent. I set out to answer a question that had been bothering me for a while: what actually makes an AI agent experience good? My instinct, as a product designer, was to go straight to the interface. Redesign the interaction patterns. Make it feel natural, human.