The Linux Foundation officially established the x402 Foundation, with founding members including Visa and Mastercard

According to The Block, the Linux Foundation has officially established the x402 Foundation, governed by a structure of 40 member companies, with Coinbase having completed its contribution to the protocol. Founding members include Ripple, Visa, Mastercard, American Express, Stripe, Adyen, Fiserv, Shopify, Google, AWS, Cloudflare, as well as Circle, MoonPay, the Solana Foundation, and the Stellar Foundation.

The protocol allows servers to respond to requests with a 402 response and pricing, while clients sign stablecoin transfers (usually USDC) and resend requests for data, without the need for accounts, credit cards, or prior relationships between the parties, making it inherently adaptable for AI agent applications. Previously in April, it was reported that the neutral internet payment protocol x402, incubated by Coinbase, would migrate under the Linux Foundation and operate in the form of an independent foundation called the "x402 Foundation."