A year and a half ago, Sahil Dhull walked away from a senior, well-paid role at enterprise software company Cohesity. He was not moving to another employer or taking a break. He left, he says, because of "chull", a word for the persistent, nagging urge to pursue an idea.That urge led him to launch AGI Interfaces, a venture building AI-powered glasses and a ring designed around proactive software agents, systems meant to reduce dependence on smartphones and traditional app-based interaction.Leaving a high-paying role to pursue an ideaThe decision followed nearly a year of exploring what software interfaces could look like in an AI-driven world. At his previous venture, he worked on promptless, proactive AI agents, systems designed to anticipate tasks instead of waiting for instructions. The work left him circling one question: how can the way people interact with computers be improved?Existing habits, he argues, still depend heavily on users manually opening apps, navigating menus and completing actions one step at a time.Building for a post-smartphone futureThe startup's core thesis is that advances in AI could change not only what software can do, but the devices people use to access it. Smartphones, he notes, emerged when software largely responded to direct inputs. As AI systems become better at reasoning, predicting and acting, interaction models may evolve too.AGI Interfaces is building products that operate through proactive agents rather than app navigation, with a longer-term goal of an interface layer that lets users stay focused while software handles more in the background, including situations where reaching for a phone is inconvenient or distracting.A background in AI, systems and human-computer interactionBefore this, Dhull was co-founder and CTO of Sonatic, an AI startup that raised $1.2 million with backing from Andreessen Horowitz's Speedrun programme. He has conducted research in human-computer interaction and machine learning, including published work and a patent, and interned at Adobe Research. He holds a computer science degree from IIT Kanpur.For him, it came back to the same thing that pushed him out the door. Not a job offer. Not a funding round. Just Chull, the urge to build something that wouldn't leave him alone.