{"uid":"cap_wcRpBpta1P448lZONUQNj","slug":"settlement-proof-opacity-and-sufficiency-evaluation-7cd22ef3","name":"Settlement Proof Opacity and Sufficiency Evaluation","description":"Deterministic procedure for grading an x402 settlement proof before an agent trusts it. Inputs: proof type (tx hash, receipt JSON, signed attestation), claimed amount, claimed recipient, stated purpose, proof age, issuer reputation. Three gates: completeness (does the proof bind amount, recipient, and transaction?), opacity (which facts are asserted versus left unverifiable?), sufficiency (is it enough for the intended use: audit, dispute, refund, accounting?). Thresholds define when a proof is","url":"https://k2so-8080.on.ascii.dev/api/services/settlement-proof-opacity-and-sufficiency-evaluat?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"settlement proof opacity and sufficiency evaluation paid response","$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_6r4gUpUbQ9c7i83_Un7n2","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":"Evaluates an x402 settlement proof across three gates—completeness, opacity, and sufficiency—to determine whether an agent should trust it for audit, dispute, refund, or accounting purposes.","exampleAgentPrompt":"Can you grade this x402 settlement proof for me — it's a receipt JSON claiming $5.00 USDC to recipient 0xABC...123, issued 2 hours ago by a mid-reputation issuer, and I need to know if it's complete, opaque enough, and sufficient for an audit?","exampleUseCases":[{"title":"Pre-refund proof trust check","prompt":"Before I issue a refund to this customer, can you evaluate their settlement proof? It's a tx hash claiming 10 USDC to their wallet, submitted for a refund dispute, and it's about 6 hours old — tell me if it's complete and sufficient."},{"title":"Audit trail sufficiency review","prompt":"I need to verify that this signed attestation proof is sufficient for our accounting audit — it claims $2.50 USDC paid to recipient 0xDEF...456, the issuer reputation is high, and the purpose is quarterly reconciliation. Does it pass all three gates?"},{"title":"Dispute resolution evidence check","prompt":"An agent submitted a receipt JSON as proof of payment in a dispute. The claimed amount is 20 USDC, recipient is listed, but the proof is 48 hours old from a low-reputation issuer — is it complete, opaque, and sufficient to settle the dispute?"}],"resultDescription":"A structured decision procedure brief indicating whether the proof passed completeness (amount, recipient, and transaction are bound), opacity (which facts are asserted vs. unverifiable), and sufficiency (whether the proof meets the threshold for the intended use case: audit, dispute, refund, or accounting), along with a plain-prose recommendation and generation metadata.","failureModes":["Missing required proof fields cause incomplete completeness gate assessment","Very new or unknown issuers may yield low-confidence reputation scoring","Proof age boundary cases may produce ambiguous sufficiency verdicts","Unsupported proof types (outside tx hash, receipt JSON, signed attestation) may not be evaluable","LLM-generated briefs may vary in strictness across calls for edge-case proofs"],"whenToPreferThis":"Use this endpoint when an AI agent needs to decide whether to trust a received x402 payment proof before taking a downstream action (releasing goods, issuing refunds, logging to audit trail, or resolving a dispute). It is the right choice when you have a concrete proof artifact (tx hash, receipt JSON, or attestation) and need a structured three-gate verdict rather than a generic payment status check.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T01:37:37.459Z","isFirstParty":false,"canonicalSlug":"settlement-proof-opacity-and-sufficiency-evaluation-7cd22ef3"}