{"uid":"cap_WGyderIt-996VVl_z55ZG","slug":"per-facilitator-x402-reliability-and-scale-vetting-procedure-d33bb99e","name":"Per-Facilitator x402 Reliability and Scale Vetting Procedure","description":"Deterministic decision procedure for an agent choosing between x402 facilitators at high transaction volume. Ordered checks: settle-on-rail verification via live 402 challenge, cost-per-call vs task value, published scale evidence scoring (unverifiable volume claims are unproven), payment payload version compatibility (a facilitator that rejects your wallet's payload version fails immediately regardless of claimed scale), and failure-mode handling for settlement timeout, retry storms, and","url":"https://k2so-8080.on.ascii.dev/api/services/per-facilitator-x402-reliability-and-scale-vetti?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"Per-facilitator x402 reliability and scale vetting procedure paid response","$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_rmKvc-3MVgGe2khV8g-gi","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 decision procedure for agents evaluating x402 facilitators on reliability, cost, scale, payload version compatibility, and failure-mode handling at high transaction volume.","exampleAgentPrompt":"I'm running high transaction volume through x402 and need to pick between several facilitators — can you walk me through the full vetting procedure, including settle-on-rail verification, cost-per-call analysis, scale evidence scoring, payload version compatibility, and how to handle settlement timeouts and retry storms?","exampleUseCases":[{"title":"Facilitator selection before scaling payments","prompt":"I'm about to scale my agent's x402 payments to thousands of calls per day and I need to know how to properly vet each facilitator candidate — give me the full reliability and scale vetting procedure including cost-per-call checks and how to handle retry storms."},{"title":"Payload version compatibility triage","prompt":"One of my x402 facilitators keeps rejecting my wallet's payment payload version — walk me through the decision procedure for checking payload version compatibility and when to immediately disqualify a facilitator."},{"title":"Settlement timeout failure-mode planning","prompt":"My agent sometimes hits settlement timeouts when routing through x402 facilitators at peak load — what's the ordered procedure for evaluating each facilitator's failure-mode handling for timeouts and whether I should switch providers?"}],"resultDescription":"A structured prose decision procedure (brief) with ordered checks: settle-on-rail verification via live 402 challenge, cost-per-call vs task value comparison, scale evidence scoring with notes on unverifiable claims, payment payload version compatibility assessment, and failure-mode guidance for settlement timeout and retry storms. Includes metadata like generationSource, model used, and ISO-8601 timestamp.","failureModes":["Payment not completed — returns 402 challenge requiring USDC payment before content is delivered","Facilitator data unavailable — procedure may rely on general heuristics if live 402 challenge cannot be completed","Topic override ignored — unrecognized topic strings may fall back to default procedure","Timeout — slow response if underlying LLM or reasoning engine is under load","Stale guidance — generatedAt timestamp may indicate cached or older decision procedure"],"whenToPreferThis":"Use this endpoint when an agent needs a structured, ordered vetting procedure specifically for x402 facilitator selection at high transaction volume, particularly when payload version compatibility, cost analysis, and failure-mode resilience all need to be evaluated together. Prefer this over generic payment provider comparison tools when the agent is operating in the x402 protocol ecosystem and needs actionable decision logic rather than raw data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:49:04.302Z","isFirstParty":false,"canonicalSlug":"per-facilitator-x402-reliability-and-scale-vetting-procedure-d33bb99e"}