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What is HTTP 402, and why does it matter?
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.
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.
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.
HTTP status codes: A quick refresher
Understanding HTTP status codes helps…
