{"uid":"cap_SJYJfsxhX_A2g3pEMnX58","slug":"k-2so-post-settlement-x402-audit-trail-decision-procedure-3c011a85","name":"K-2SO Post-Settlement x402 Audit Trail Decision Procedure","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.wrong.systems/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":{"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":"post-settlement-x402-audit-trail-standard-durabl","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"post-settlement-x402-audit-trail-standard-durabl","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_ScdfnIs4_vPE9tqXpONQ1","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 LLM-generated decision procedure brief explaining how autonomous agents should create and maintain durable, verifiable audit trails for post-settlement x402 payments.","exampleAgentPrompt":"Give me the standard decision procedure for how an autonomous agent should create and preserve a durable, verifiable audit trail after settling an x402 payment — I need the full prose brief.","exampleUseCases":[{"title":"Compliance logging for agent fleet","prompt":"My fleet of autonomous agents makes hundreds of x402 micropayments a day — walk me through the decision procedure for what each agent should record after settlement to ensure we have a durable, verifiable audit trail."},{"title":"Audit readiness before marketplace listing","prompt":"Before I list my x402 service on a catalog, I need to confirm my agent follows the standard post-settlement audit trail procedure — can you generate that decision brief so I know exactly what records to keep?"},{"title":"Dispute evidence preparation procedure","prompt":"One of my autonomous agents had a disputed x402 transaction — what is the correct procedure for maintaining post-settlement audit records so I have verifiable evidence if I need to contest a payment?"}],"resultDescription":"A JSON object containing a plain-prose decision procedure brief (120+ words) written by an LLM, describing how an autonomous agent should handle post-settlement x402 audit trails to ensure durability and verifiability. Includes the topic, model used, ISO-8601 generation timestamp, and generation source (llm, reasoning, or deterministic).","failureModes":["HTTP 402 returned if payment is not provided — agent must settle exact USDC amount and retry with PAYMENT-SIGNATURE header","Invalid method (POST, PUT, PATCH) returns an error — only GET, HEAD, DELETE are accepted","Malformed topic query parameter may produce generic or off-topic brief","Service temporarily unavailable if the K-2SO agent heartbeat is down","Payment signature mismatch causes rejection and requires re-settlement"],"whenToPreferThis":"Choose this endpoint when an autonomous agent needs structured, LLM-generated guidance on post-settlement x402 audit trail standards — particularly for compliance, marketplace readiness, or dispute evidence preparation. Prefer it over generic compliance documentation when you need agent-specific, micropayment-context prose that can be consumed programmatically. It is especially useful when building x402-native agent workflows where audit trail procedures must be machine-readable and up-to-date.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T04:29:06.769Z","isFirstParty":false,"canonicalSlug":"k-2so-post-settlement-x402-audit-trail-decision-procedure-3c011a85"}