什么是HTTP 402，为什么重要？

网络并不是真正考虑到付款的真正构建的，尤其是对于自主代理或机器而言。但是随着AI的兴起和分散的

The web was not really built with payments in mind, especially not for autonomous agents or machines. But with the rise of AI and decentralized finance (DeFi), the need for seamless, native digital payments has never been more urgent.

网络并不是真正考虑到付款的真正构建的，尤其是对于自主代理或机器而言。但是，随着人工智能和分散融资（DEFI）的兴起，对无缝的本地数字支付的需求从未如此紧迫。

Coinbase x402 announced a new open protocol designed to let APIs, apps and AI agents pay instantly using stablecoins like USDC (USDC), all via the familiar HTTP protocol.

Coinbase X402宣布了一项新的开放协议，旨在通过熟悉的HTTP协议，使用USDC（USDC）等Stablecoins立即使用API​​，应用程序和AI代理立即付款。

This isn’t just a product update. X402 revives a long-forgotten piece of internet infrastructure and reimagines it for a future powered by agentic systems and crypto.

这不仅仅是产品更新。 X402恢复了久经考验的互联网基础架构，并将其重新构想为由代理系统和加密货币提供支持的未来。

HTTP status codes: A quick refresher

HTTP状态代码：快速刷新

Understanding HTTP status codes helps clarify how the web communicates behind the scenes. Here are some key ones to know:

了解HTTP状态代码有助于阐明网络在幕后如何通信。这是一些要知道的关键：

HTTP 200 (OK): The standard response for a successful request.

HTTP 200（确定）：成功请求的标准响应。

HTTP 400 (Bad Request): Indicates the request had syntax errors and couldn’t be understood.

HTTP 400（不良请求）：指示请求有语法错误，无法理解。

HTTP 401 (Unauthorized): Occurs when a request is made without proper authorization, like a username and password.

http 401（未经授权）：在未经适当授权的情况下提出请求（例如用户名和密码）时发生。

HTTP 403 (Forbidden): Signals that the server understands the request but refuses it.

HTTP 403（禁止）：信号表明服务器了解请求，但拒绝了。

HTTP 404 (Not Found): The requested resource couldn’t be located on the server.

HTTP 404（找不到）：所请求的资源无法在服务器上找到。

Among these codes is HTTP 402, "Payment Required."

这些代码中有http 402，“需要付款”。

Although the creators of the web imagined a future where online services might request payments directly through the protocol, for decades, no one found a practical use for it. It sat dormant for over 25 years, with no widespread adoption or defined behavior.

尽管网络的创建者想象着一个未来，在线服务可能直接通过协议请求付款，但几十年来，没有人找到实际用途。它处于休眠状态超过25年，没有广泛采用或定义的行为。

Today, HTTP 402 is finally coming to life, thanks to Coinbase’s x402 protocol. X402 turns HTTP 402 from a placeholder into a real mechanism. It allows websites, APIs and services to signal that a payment is required before granting access to digital goods or services.

今天，由于Coinbase的X402协议，HTTP 402终于栩栩如生。 X402将HTTP 402从占位持有人转变为真正的机制。它允许网站，API和服务表明在授予对数字商品或服务的访问之前，需要付款。

Unlike traditional payment systems, which rely on external redirects or complex integrations, x402 enables native, in-protocol payments using stablecoins directly over HTTP.

与依靠外部重定向或复杂集成的传统支付系统不同，X402可以直接使用http上的stablecoins启用本地付费付款。

But why do x402 and the activation of HTTP 402 matter?

但是，为什么X402和HTTP 402的激活很重要？

With machine-to-machine interactions, autonomous agents and AI-driven services on the rise, the internet needs a payment layer that is:

随着机器对机器的交互，自动源代理和AI驱动服务的上升，互联网需要一个付款层，即：

• Atomic: Completing an entire transaction or none at all.

•原子：完成整个交易或根本没有完成。

• Chain agnostic: Operating across various blockchains.

•链不可知论：跨各种区块链运行。

• overflow: auto; padding: 0px; margin: 0px; width: 0px; height: 0px; border: 0px none; max-width: 0px; max-height: 0px; min-width: 0px; min-height: 0px; visibility: hidden; display: none; float: none; clear: none;

•溢出：自动；填充：0px;保证金：0px;宽度：0px;身高：0px;边界：0px无；最大宽度：0px; Max-Height：0px;最小宽度：0px;最小值：0px;可见性：隐藏；显示：无；浮点：无；清晰：无；

Activating HTTP 402 positions it as a key enabler for decentralized commerce, autonomous agents and crypto-native applications. It could become as foundational as HTTP 200 or 404 in a future where services charge micro-fees, stream value or sell access dynamically.

激活HTTP 402将其定位为分散商务，自主代理和加密本地应用的关键推动力。它可能会像HTTP 200或404一样成为基础，在服务中，服务充满动态收费，流式价值或销售访问权限。