{"uid":"cap_lDecsljBYDgaoIEP4Jb8R","slug":"x402-payment-failure-cause-classification-and-response-procedure-3f0cbcd1","name":"x402 Payment Failure Cause Classification and Response Procedure","description":"Paid agent-facing brief on x402 payment failure cause classification and response procedure: agent triaging a failed micropayment into rail degradation vs merchant contract weakness vs wallet insufficiency, with retry/switch/abort thresholds · Build a decision procedure or schema for: x402 payment failure cause classification and response procedure: agent triaging a failed micropayment into rail degradation vs merchant cont. Blunt decision procedure, not marketing.","url":"https://k2so.wrong.systems/api/services/x402-payment-failure-cause-classification-and-re?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"x402 payment failure cause classification and response procedure: agen paid response","$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":"x402-payment-failure-cause-classification-and-re","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"x402-payment-failure-cause-classification-and-re","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_ArIZcffMn4k-kronbYoRL","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 agents to triage failed x402 micropayments into rail degradation, merchant contract weakness, or wallet insufficiency, with retry/switch/abort thresholds","exampleAgentPrompt":"I just had an x402 micropayment fail — can you give me a decision procedure to figure out whether it was a rail degradation issue, a merchant contract problem, or wallet insufficiency, and tell me when to retry, switch, or abort?","exampleUseCases":[{"title":"Triage a live payment failure","prompt":"One of my agent's x402 payments just failed mid-task. Walk me through how to classify the failure — rail degradation, bad merchant contract, or insufficient wallet funds — and tell me the thresholds for when to retry, switch providers, or just abort."},{"title":"Build payment error handling logic","prompt":"I'm building an autonomous agent that makes x402 micropayments and I need a blunt decision procedure it can follow when a payment fails, covering all three failure causes with clear retry and abort rules."},{"title":"Diagnose repeated micropayment failures","prompt":"My agent keeps hitting payment failures on the same x402 merchant. Give me a classification schema to determine whether this is a recurring rail issue, a problem with that merchant's contract, or my wallet running dry — and what action to take at each threshold."}],"resultDescription":"A structured decision procedure brief (prose and/or schema) classifying x402 payment failures into three root causes — rail degradation, merchant contract weakness, and wallet insufficiency — with specific retry, switch, and abort thresholds an autonomous agent can act on directly.","failureModes":["Payment required but wallet has insufficient USDC (HTTP 402 on the meta=0 call)","Topic override not recognized, returns default x402 failure classification procedure","LLM generation failure returns ok:false with error detail","Slow response if generationSource is reasoning rather than deterministic"],"whenToPreferThis":"Choose this endpoint when an autonomous agent needs a concrete, actionable triage procedure for x402 micropayment failures at runtime — particularly when distinguishing between infrastructure-level rail problems, merchant-side contract issues, and wallet balance shortfalls. Preferable over generic payment error docs when the agent needs machine-readable thresholds for retry/switch/abort decisions in a live x402 payment loop.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-01T02:25:54.071Z","isFirstParty":false,"canonicalSlug":"x402-payment-failure-cause-classification-and-response-procedure-3f0cbcd1"}