Interface is a $99 smart ring from AI and hardware startup Natura, designed to put AI agents on the user’s finger. A press of the finger lets the wearer ask an agent to complete a task or capture thoughts without reaching for a phone. Alongside the agent controls, the ring tracks health data including heart rate, HRV, sleep, activity, and skin temperature.

The company was founded by Carlo Edoardo Ferraris, previously of Rolling Square, who concluded that AI needed a new interface where people ask for what they want the way they would ask a person. Natura’s first product was HumanPods, AI-enabled earbuds, but the team moved to a ring form factor for 24/7 access: you can shower and sleep with it and never take it off. At launch, Interface connects with AI agents and apps such as Meta’s Muse, Instinct, Grokbot, Claude, and ChatGPT, and users can choose which agent handles a given task.

The stated use cases are broad: start workout tracking on a run, ask for the day’s schedule after waking, reorder shampoo from the shower, turn off the TV and set an alarm while falling asleep, or record a meeting and send notes to a coworker. Agent responses can be delivered through connected headphones, an iPhone Live Activity, or the NatureOS app. Ferraris also sees the ring eventually controlling computers and replacing many screen-based tasks like form filling, messaging, file finding, and presentations. He expects that initial users will be people who already have a personal agent, mostly in tech, but believes most people will have one within about a year.

Natura plans to open pre-orders next month and ship in December or January. The launch price is $99, with plans to raise it later; after an initial three- to six-month free period, the ring will require a $9 monthly subscription. According to the company, manufacturing costs are comparable to products like Oura Ring and Samsung Galaxy Ring because many components are the same, but Natura is pricing lower initially to reduce the barrier to entry and drive adoption.

On the hardware side, Natura says the ring lasts 6 to 12 days on a charge and takes 100 minutes to charge fully. Ferraris describes the product as combining high-quality health tracking with agent communication, meeting recordings, and external memory in a very small form factor with long battery life. While the smart ring market includes health-focused competitors like Oura, Ultrahuman, and RingConn, and AI-focused ones like Pebble and Vocci, he says Interface stands out by combining both worlds.