Coinbase-Backed x402 V2 Integrates Base, Solana, and Cards for AI-Driven Payments

x402 V2 Upgrade: The x402 V2 protocol, incubated by Coinbase, enhances multi-chain routing and wallet sessions, allowing seamless HTTP 402 payments across various crypto and traditional payment systems, including Base and Solana.

Wallet-Based Sessions: The new wallet-based sessions facilitate subscription-like access for repeated API or AI-agent calls, reducing overhead by eliminating unnecessary on-chain interactions and linking sessions to wallet ownership instead of API keys.

Discovery Extensions: A new Discovery extension enables x402 services to expose metadata for easier indexing by facilitators, allowing AI agents to automatically discover services, understand pricing, and initiate payments.

Protocol Adoption and Support: The x402 protocol has processed over 100 million payments since its initial deployment, with support from major companies like Cloudflare, Google, and Visa, aiming to establish it as an open standard for machine-to-machine transactions.