We've published an official @USDC method spec for @mpp (Machine Payments Protocol) The spec gives developers: → A standardized way for agents to transact in USDC across supported EVM chains and Solana → The first crosschain payment profile in MPP via Circle Gateway → Support for USDC-backed stablecoins, starting with USDCx on Stacks For blockchain networks, this creates a path to become a settlement layer for machine-to-machine commerce, enabling seamless USDC payments between agents, APIs, services, and merchants across chains. https://paymentauth.org/draft-usdc-charge-00.html(Circle)