Everyone’s talking about #x402 today, but most people still don’t get what it actually means. Here’s the simplest way to think about it: x402 makes money move through the internet like information. It revives an old HTTP code — 402 Payment Required — and gives it real purpose. When a website, API, or AI agent returns a 402, it’s not an error anymore. It’s a price tag. Example: “This endpoint costs $0.01 USDC. Pay to continue.” The agent pays instantly, receives data, and keeps going. No accounts. No billing pages. No human in the loop. In technical terms: it’s a payment protocol embedded directly into HTTP — the same rails every browser, API, and agent already speaks. Why does this matter? Because the web is shifting from humans clicking to agents transacting. Thousands of AI agents are already running workflows — fetching data, analyzing content, connecting APIs. Soon, they’ll also pay for compute, storage, APIs, and each other’s services. But they can’t: → type credit card numbers → confirm PayPal pop-ups...