Coinbase has launched x402 V2, an upgraded AI-driven payment protocol that now includes stablecoin integration. This new version focuses on expanding service accessibility and features a modular design, enabling developers to incorporate various payment methods and secure wallet access. The x402 Marketplace introduces an AI agent discovery layer, enhancing the platform's capabilities. The update also supports multi-chain and fiat payments through CAIP standards, aligning with Coinbase's strategy to provide a secure digital asset platform. This enhancement aims to improve advanced trading features for both developers and users, reinforcing Coinbase's commitment to innovation in digital payments.