x402 V1 → V2 Migration Guide Field notes from migrating a live, payment-gated API from x402 V1 to V2 on Base mainnet — the undocumented gotchas, working code from a service in production, and a checklist at the bottom. Written from x402ai , which settles real USDC on Base via the Coinbase CDP fa...
Source: [Dev.to](https://dev.to/ukenal/migrating-a-live-x402-service-from-v1-to-v2-on-base-mainnet-1mg9)