Coinbase’s x402 Payments Protocol Releases V2 With Multi-Chain and AI-Ready Upgrades

The x402 payments protocol, incubated by Coinbase and designed for autonomous machine-to-machine payments, has released its V2 upgrade following six months of real-world deployment. Since its initial rollout, the protocol has processed more than 100 million payments across APIs, AI agents, and web services, momentum that directly shaped the enhancements introduced on December 11, 2025. source: https://www.ethnews.com/coinbases-x402-payments-protocol-releases-v2-with-multi-chain-and-ai-ready-upgrades/