In April 2026, the Linux Foundation made x402 a public standard — backed by Coinbase, Google, AWS, Stripe, Visa, Cloudflare. Two months later, the facilitators are already diverging. Coinbase CDP rejects valid upto payloads.
Source: [Dev.to](https://dev.to/victordflos/we-built-x402-middleware-before-the-hyperscalers-fragmented-the-standard-8b8)