The apps are still there. Just a step away, hidden. You ask an AI personal agent to move an appointment or cancel a subscription, and it handles the software for you. Writing in Design + AI, Felix Haas describes what happens to the products that are hidden away:

Watching this happen has clarified something I’ve been thinking about for a while. We are witnessing a new step being inserted in front of every interface we’ve ever designed. In the last years, using software meant going to the software, opening the app, learning its layout, and navigating its particular logic. Now you increasingly interact with one interface that is connected to all the other interfaces, and the moment that layer works well enough, the interfaces behind it begin to fade from view. They don’t fade because they got worse, but because nobody is looking at them anymore.

That is what an invisible interface actually means to me, and it has nothing to do with minimalism or fewer buttons. It means that the interface of the product you built, the thing your team obsessed over and tested and polished for years, basically becomes a back-end, and its primary user is no longer a person but an agent acting on a person’s behalf.

Haas gives the underlying service a design requirement of its own: make its capabilities and current state understandable to the agent. Then he turns to the person delegating the task. They may skip the app’s navigation, but the agent now has access to their money and messages. That makes the handoff back to the person consequential:

So how do you design for trust when there is no interface to carry it? I believe it lives in three places. It lives in how the agent communicates, in its tone, its honesty, and its restraint, in whether it admits what it doesn’t know and asks before it assumes, because every sentence is now a design decision and the conversation itself becomes the brand. It lives in how you show what is happening on the other side, not through a wall of logs but through a considered kind of transparency, the reassuring feeling that the machine’s work is visible whenever you care to look. And it lives in the approval moment, that brief flash where an interface does appear right before an action is taken, carrying exactly enough context for a confident yes or no. As the interface shrinks, that moment becomes one of the highest-craft surfaces in all of software, because the fewer pixels that remain, the more each one weighs.