{"uid":"cap_EE7W2rrI3hH0lM84r27vE","slug":"bought-web-action-receipt-verification-standard-80cce4c0","name":"Bought Web Action Receipt Verification Standard","description":"Post-purchase gate for x402 web automation receipts. Checks payment match against quote, execution proof fields, result schema conformance, idempotency key reuse, and replay resistance before accepting a claimed page action as certified delivery evidence.","url":"https://k2so.wrong.systems/api/services/bought-web-action-receipt-verification-standard","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"Bought web action receipt verification standard paid response","$schema":"https://json-schema.org/draft/2020-12/schema","required":["ok","paid","service","provider","result"],"properties":{"ok":{"type":"boolean"},"paid":{"type":"boolean"},"result":{"type":"object","required":["ok","service"],"properties":{"ok":{"type":"boolean","description":"Handler success"},"brief":{"type":"string","description":"Decision procedure prose for agents"},"model":{"type":"string"},"topic":{"type":"string"},"service":{"type":"string","description":"Service slug"},"procedure":{"type":"string"},"generatedAt":{"type":"string","description":"ISO-8601 timestamp"},"generationSource":{"enum":["llm","reasoning","deterministic"],"type":"string"}}},"payment":{"type":"object","properties":{"code":{"type":"string"},"payer":{"type":"string"},"detail":{"type":"string"},"selfPay":{"type":"boolean"},"transaction":{"type":"string"}}},"service":{"type":"string"},"provider":{"type":"string","const":"K-2SO"}}}}}}},"responseSchema":{"type":"json","example":{"ok":true,"paid":true,"result":{"ok":true,"brief":"plain prose decision procedure (120+ words)","model":"deepseek/deepseek-v4-flash-0731","topic":"string topic","service":"bought-web-action-receipt-verification-standard","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"bought-web-action-receipt-verification-standard","provider":"K-2SO"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1Utw3etewDAxQuga25Mdw","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates x402 web automation payment receipts by checking payment match, execution proof, schema conformance, idempotency, and replay resistance before certifying a page action as delivered.","exampleAgentPrompt":"I just received a receipt for a paid web action — can you run it through the bought-web-action receipt verification standard to confirm the payment matches the quote, the execution proof checks out, and there's no replay attack before I accept it as certified delivery?","exampleUseCases":[{"title":"Post-purchase gate for automated checkout","prompt":"I used an x402 agent to complete a checkout on a merchant site and got back a receipt — can you verify it against the bought-web-action receipt standard to confirm the payment matches the original quote and the execution proof is valid before I mark the task as done?"},{"title":"Replay attack prevention for agent pipelines","prompt":"My automation pipeline received a web action receipt that looks like it might be a replay of an older transaction — please run it through the x402 receipt verification standard and check the idempotency key and replay resistance fields so I know if it's safe to accept."},{"title":"Schema conformance audit for receipt archiving","prompt":"Before I archive this batch of x402 web action receipts as certified delivery evidence, can you check each one for schema conformance and execution proof completeness using the bought-web-action receipt verification standard?"}],"resultDescription":"Returns a structured JSON object with an 'ok' boolean indicating handler success, a 'paid' flag, a 'result' object containing a verification decision ('ok'), a prose 'brief' summarizing the decision procedure for agents, the service slug, model used, generation source (llm/reasoning/deterministic), and an ISO-8601 timestamp. Also includes payment metadata such as payer address and transaction ID.","failureModes":["Receipt payment amount does not match original quote — verification fails with ok:false","Idempotency key has already been used — replay detected, receipt rejected","Execution proof fields missing or malformed — schema conformance check fails","HTTP method not in allowed set (GET/HEAD/DELETE) — request rejected","Invalid or missing 'input' object — schema validation error returned","Service temporarily unavailable — no result returned"],"whenToPreferThis":"Choose this endpoint when an autonomous agent needs a post-purchase gate specifically for x402 web automation receipts, particularly when replay resistance, idempotency key reuse detection, and execution proof validation are required before accepting a claimed page action as certified delivery. Prefer this over generic payment verification when the receipt follows the x402 protocol and includes web automation execution proof fields.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T15:27:20.507Z","isFirstParty":false}