Amazon's Bedrock AgentCore Payments, built with Coinbase and Stripe, enables AI agents to pay with stablecoins and x402 within preset spending limits. However, the Reserve Bank of Australia (RBA) noted on October 6 that a significant liability gap exists when a buyer's agent pays correctly but the buyer wants a refund. GenLayer Foundation CEO Edgars Nemse told CryptoSlate that while payment is deterministic, defining if work was delivered as promised is a judgment call. Mastercard projects 324 million chargebacks worldwide by 2028, and a 15% increase due to AI agent activity could add 48.6 million chargebacks, costing merchants an estimated $6.2 billion in operational costs.