支付首先应被理解为一种基础设施。随着稳定币的出现，支付堆栈正在精简。我们正从需要多个交易对手关系和定期费用的传统模式，转向可编程的链上结算。

Friends, we did it! Starting today, Pickful officially supports one-click USDC payments on Base Mainnet! No sign-up, no pre-funding, no waiting — one signature, lifetime access.

Payments on the internet are fundamentally flawed. Credit Cards are high friction, hard to accept, have minimum payments that are far too high, and don't fit into the programmatic nature of the internet. It's time for an open, internet-native form of payments. A payment rail that doesn't have high minimums + % based fee. Payments that are amazing for humans and AI agents.

x402 协议是 Coinbase 推动的一项开放支付标准，旨在复兴 HTTP 402 “Payment Required”状态码，结合区块链技术和 AI 代理（agents）需求，构建一个支持微支付和按需付费的互联网支付框架。