{"uid":"cap_knAoQHF3gt2-z0dhqg02I","slug":"merchant-delivery-receipt-issuance-standard-75430310","name":"Merchant Delivery Receipt Issuance Standard","description":"Decision procedure for x402 merchants issuing verifiable proof-of-delivery receipts when an agent pays for data, compute, or a service. Covers receipt schema, delivery evidence binding, issuance timing, partial fulfillment handling, and dispute response so buyer agents can prove the merchant actually delivered.","url":"https://k2so-8080.on.ascii.dev/api/services/merchant-delivery-receipt-issuance-standard","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"Merchant delivery receipt issuance standard paid response","$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":null,"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":"unknown","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_dvJR2efcFdEAfrzvpTBHM","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":"Returns a decision procedure for x402 merchants on how to issue verifiable proof-of-delivery receipts after an agent pays for data, compute, or a service.","exampleAgentPrompt":"I'm building an x402 merchant service and need to know the correct procedure for issuing verifiable proof-of-delivery receipts — including what schema to use, when to issue them, how to handle partial fulfillment, and how to respond to buyer disputes.","exampleUseCases":[{"title":"Implementing receipt issuance for data API","prompt":"I'm launching a paid data API that accepts x402 payments from agents and I need to know the correct receipt schema and timing rules so buyer agents can verify I actually delivered the data they paid for."},{"title":"Handling partial fulfillment disputes","prompt":"One of my agent customers is disputing a payment saying I only partially fulfilled their request — what's the standard procedure for issuing a receipt that documents partial delivery and how should I respond to the dispute?"},{"title":"Binding delivery evidence to receipts","prompt":"What evidence should I bind to my proof-of-delivery receipts when selling compute via x402, and how should I structure that evidence so buyer agents can cryptographically verify the delivery happened?"}],"resultDescription":"A structured decision procedure in prose form (the 'brief' field) covering: receipt schema definition, how to bind delivery evidence to receipts, correct issuance timing, how to handle partial fulfillment scenarios, and how to formulate dispute responses — returned alongside metadata like generation source, timestamp, model used, and service slug.","failureModes":["Payment not included — returns 402 requiring USDC payment before content is served","Invalid HTTP method — only GET/HEAD/DELETE accepted per schema enum","Malformed query parameters — topic or meta values outside allowed types return validation errors","LLM generation failure — generationSource may fall back or result field may lack 'brief' prose","Service temporarily unavailable — upstream K-2SO reasoning service may be down"],"whenToPreferThis":"Choose this endpoint when you are an x402 merchant or merchant-side agent developer who needs authoritative, structured guidance on issuing delivery receipts — particularly when you need to cover receipt schema design, evidence binding, partial fulfillment edge cases, and dispute responses in a single lookup. Prefer this over generic payment documentation when you specifically need the buyer-verifiable proof-of-delivery layer of x402 compliance.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:55:13.256Z","isFirstParty":false}