Sierra Partners with Stripe to Bring Payments Into AI Agent Calls

Sierra on October 20, 2026, announced a partnership with Stripe that lets customers converse with one of its AI agents, pay, and receive a receipt on the same call. Sierra said healthcare payments company Cedar was one of the first companies to take payments over the phone through the integration. In the announcement, Sierra said payments are taking on a larger role as agents shift from single, support-only conversations toward interactions that can generate revenue.

Yet at the moment of purchase, customers are still often handed to another system or sent a payment link, splitting a process the company said should be seamless. Sierra said the partnership removes that friction so the conversation, payment, and receipt stay on a single call. At the point of payment, the agent shifts into a secure payment mode and the customer keys card details in on the phone keypad.

The entry is routed to Stripe, which processes the payment. The agent then returns to the line to confirm the transaction and help with whatever the customer needs next. Cedar’s business is helping health systems…