BlockBeats reported that OKX On-chain OS has officially launched the 'Agent Payment Protocol (APP)', an open payment standard exclusively for AI agents. It is designed to enable AI agents to make one-time payments, pay-as-you-go based on usage, or even escrow payments for secure transactions during business processes. The Ethereum Foundation, Uniswap, Aptos, and others joined as early partners, lending support to the standardization efforts.