What Is x402? HTTP Payments for AI AgentsWhat is x402? The HTTP 402 payment protocol explained in plain English: pay-per-request for AI agents, stablecoins, and why agents pay per visit.FAQ

What is x402?

x402 is a payment protocol built on the HTTP 402 Payment Required status. A server quotes a price, the buyer pays with crypto, then the server delivers the content.

Why will agents pay every time they visit?

Because agent traffic can be huge and automated. Per-request pricing means the site owner gets paid for each use instead of giving bots free bandwidth.

What do agents pay with?

Usually USDC stablecoin on a low-fee network such as Base. The exact asset and network are stated in every 402 quote.

Is x402 only for AI agents?

No. Any software can use it, but agents are the main use case because they browse and consume data autonomously at scale.

Do I need an account to use x402?

No account or API key. The buyer just needs a funded wallet, and the seller just needs a wallet address to receive funds.

Is x402 connected to Cloudflare?

Cloudflare supports x402 through its Monetization Gateway and Agents SDK, so any site on Cloudflare can charge agents per request.

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