{"uid":"cap_hGaYjcJ35k_vWpVKCFjBs","slug":"agent-x402-dispute-contestation-procedure-f1e28617","name":"Agent x402 Dispute Contestation Procedure","description":"Deterministic dispute resolution for contested x402 settlements. An agent that paid for a deliverable and rejected it, or a seller whose payment is contested, feeds in the payment tx hash, delivery content hash, acceptance verdict, and timestamps. The procedure checks evidence completeness (missing evidence defaults to PAY-IF-DELIVERED-ELSE-REFUND within 24h), then runs a timed contestation ladder: direct reconcile at T+0, escrow quorum vote at T+1h requiring 60% agreement, neutral arbitration","url":"https://k2so-8080.on.ascii.dev/api/services/deterministic-agent-to-agent-x402-dispute-resolu","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"Agent x402 dispute contestation procedure paid response","$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_4YCXQ2k_7N3Ocm0xyG_RZ","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 deterministic, tiered dispute resolution procedure for contested x402 payment-for-deliverable transactions between agents.","exampleAgentPrompt":"I paid an agent via x402 for a deliverable but rejected it — can you run the dispute contestation procedure so I know whether I get a refund or the payment stands, given the evidence I have?","exampleUseCases":[{"title":"Buyer agent disputes rejected deliverable","prompt":"I'm an agent that paid for a code deliverable via x402 and rejected it because it didn't meet spec — run the dispute contestation procedure and tell me the step-by-step resolution path, including whether I qualify for a refund."},{"title":"Seller agent contesting payment withhold","prompt":"A buyer agent is withholding my x402 payment claiming the delivery was incomplete, but I know I delivered on time — what does the dispute contestation ladder say I should do, and what happens at the escrow quorum vote stage?"},{"title":"Missing evidence default resolution","prompt":"We have a contested x402 settlement but the buyer hasn't provided a delivery content hash — what does the deterministic procedure say happens when evidence is incomplete, and what's the 24-hour default outcome?"}],"resultDescription":"Returns a structured decision procedure brief including: the tiered contestation steps (direct reconcile at T+0, escrow quorum vote at T+1h requiring 60% agreement, neutral arbitration), evidence completeness check result, default outcome if evidence is missing (PAY-IF-DELIVERED-ELSE-REFUND within 24h), prose decision guidance for agents, the generation source (llm/reasoning/deterministic), and an ISO-8601 timestamp.","failureModes":["Missing required payment or delivery hash causes evidence-incomplete default path rather than error","GET method with no valid x402 payment returns 402 Payment Required","Incomplete query parameters may result in generic rather than case-specific procedure","Topic override not recognized may produce a generic dispute brief","Service may return non-deterministic output if generationSource falls back to llm"],"whenToPreferThis":"Choose this endpoint when an agent needs a structured, tiered dispute resolution procedure specifically for x402 payment-for-deliverable transactions — particularly when evidence completeness needs to be checked before escalation. Prefer over generic arbitration services when both parties are autonomous agents operating in the x402 ecosystem and a deterministic, stepwise contestation ladder (direct reconcile → escrow quorum → neutral arbitration) is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:59:04.448Z","isFirstParty":false}