Odaily News Coinbase Developer Platform announced the launch of a new open source payment protocol x402, which aims to activate the long-unused HTTP 402 status code "Payment Required" on the Internet, and transform it into a real on-chain payment layer, suitable for new scenarios such as API service providers, content creators, and contextual protocols. x402 allows servers to request payments, and clients (including humans and intelligent agents) respond instantly, supporting micropayments on a pay-per-use basis without cumbersome subscriptions. Coinbase said that the protocol is expected to simplify the Web3 payment process and provide new infrastructure for the proxy economy and on-chain services.