Verified70% confidenceFactExact time
In the x402 protocol, when the server receives an unpaid request it returns 402 along with the payment requirements (amount, receiving address, chain, currency); the client constructs an on-chain transfer or signed authorization and replays the request, and the server returns the resource after verification.
4
Sources
70%
Confidence
Long-term
Relevance
10/13/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedIn the x402 protocol flow, when an AI agent requests a paid resource, the server returns a 402 status, whereupon the agent automatically completes payment authorization and re-sends the request, with no human intervention required throughout.77% similarUnverifiedThe x402 payment protocol allows service providers to directly require payment at the HTTP layer, enabling agents to complete the full request–payment–response loop in a single step when requesting model inference.72% similarUnverifiedL402协议的机制是：服务器返回402状态码并附带闪电网络发票和macaroon，客户端支付后获得preimage，将macaroon与支付凭证组合作为访问令牌70% similarUnverifiedIn the x402 ecosystem, it is often the facilitator, rather than the client itself, that actually broadcasts the payment on-chain, confirms the result and returns the credential to the seller.69% similarUnverifiedHTTP status code 429 indicates server-side rate limiting, usually accompanied by a Retry-After header; HTTP 403 indicates access is directly denied, possibly due to an IP blacklist, a User-Agent identified as a crawler, or missing authentication information.56% similar
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