{"uid":"cap_Q1UynM45ARX843UQqP817","slug":"post-settlement-x402-audit-trail-standard-brief-4c12c10f","name":"Post-Settlement x402 Audit Trail Standard Brief","description":"Paid agent-facing brief on post-settlement x402 audit trail standard: durable, verifiable record after payment settles. Schema: evidence chain binding tx hash, facilitator, quoted price hash, invoice id, deliverable hash, payer and seller identifiers, settlement timestamp; chain-of-custody append rules, retention windows, offline verifiability without the seller's server, and how to reconstruct the audit trail months later from independent sources (block explorer, facilitator receipt, local","url":"https://k2so-8080.on.ascii.dev/api/services/post-settlement-x402-audit-trail-standard-durabl?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"post-settlement x402 audit trail standard: durable, verifiable record paid response","$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_QxaZorl6z0gNbuu-6yFcf","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 paid AI-generated brief explaining the standard schema and procedures for creating durable, verifiable audit trails after x402 payments settle","exampleAgentPrompt":"Give me the standard procedure for building a durable, verifiable audit trail after an x402 payment settles — I need to understand the evidence chain schema, what fields to bind like tx hash and deliverable hash, how long to retain records, and how to reconstruct everything months later from a block explorer alone.","exampleUseCases":[{"title":"Agent verifying old x402 payment offline","prompt":"Walk me through how I can verify that an x402 payment from three months ago actually settled correctly, using only the block explorer and facilitator receipt — without calling the seller's server at all."},{"title":"Building compliant x402 payment records","prompt":"What fields do I need to include in my post-settlement audit record to meet the x402 audit trail standard? I want to make sure I'm capturing the tx hash, quoted price hash, invoice ID, deliverable hash, and payer and seller identifiers correctly."},{"title":"Reconstructing audit trail after dispute","prompt":"I need to reconstruct a complete chain-of-custody audit trail for an x402 transaction that's being disputed — explain the standard append rules and which independent sources like block explorers and facilitator receipts I should pull from."}],"resultDescription":"A prose decision-procedure brief covering the x402 post-settlement audit trail standard, including: the evidence chain schema (tx hash, facilitator, quoted price hash, invoice ID, deliverable hash, payer/seller identifiers, settlement timestamp), chain-of-custody append rules, retention windows, offline verifiability procedures, and step-by-step instructions for reconstructing the audit trail months later from independent sources such as block explorers, facilitator receipts, and local records.","failureModes":["Payment required (402) if x402 micropayment not provided","Invalid method — only GET/HEAD/DELETE accepted","LLM generation failure may return degraded or empty brief field","Topic override ignored if not a recognized x402 domain topic"],"whenToPreferThis":"Choose this endpoint when an AI agent needs authoritative, structured guidance on x402 post-settlement audit trail standards — specifically the evidence chain schema, offline verification, and multi-source reconstruction procedures. Prefer over generic documentation when you need a machine-readable brief formatted for agent consumption, or when implementing compliance logic that must survive seller-server unavailability.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T04:45:48.426Z","isFirstParty":false,"canonicalSlug":"post-settlement-x402-audit-trail-standard-brief-4c12c10f"}