{"product_id":"http-402-payment-required-explained","title":"HTTP 402 Payment Required Explained","description":"\u003cp\u003e\u003cb\u003eUnderstand HTTP 402 and distinguish a payment challenge from authorization and successful delivery.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eHTTP 402 Payment Required Explained is a 4-page PDF field guide. HTTP status semantics, payment challenges and delivery verification.\u003c\/p\u003e\u003cp\u003e• The status is a signal: HTTP 402 indicates payment is required but does not by itself define asset, network or proof format.\u003c\/p\u003e\u003cp\u003e• Terms must be machine-readable: Price, recipient, expiry, resource and payment method need unambiguous representation.\u003c\/p\u003e\u003cp\u003e• Retry must be bound: Payment proof should attach to the intended request and resist replay or substitution.\u003c\/p\u003e\u003cp\u003e• Delivery is separate: A valid transfer does not prove that the requested resource was correct or accepted.\u003c\/p\u003e\u003cp\u003eAction checklist: Specify price and denomination; Bind terms to resource and expiry; Validate network and recipient; Protect proof against replay; Return deterministic errors; Record payment and delivery evidence.\u003c\/p\u003e\u003cp\u003eProtocol support and settlement finality vary by implementation and network.\u003c\/p\u003e","brand":"SCRIPTMASTERLABS [Author]","offers":[{"title":"Digital PDF","offer_id":56394623385905,"sku":"SML-X402-002","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1008\/9385\/1953\/files\/http-402-payment-required-explained.jpg?v=1789926403","url":"https:\/\/shop.scriptmasterlabs.com\/products\/http-402-payment-required-explained","provider":"My Store","version":"1.0","type":"link"}