{"uid":"cap_wrfdwFiHLsRgReuxG_uLY","slug":"x402-trust-verification-budget-ceiling-decision-procedure-41ad8790","name":"x402 Trust Verification Budget Ceiling Decision Procedure","description":"Paid agent-facing brief on x402 trust verification budget ceiling: a decision procedure for an agent deciding how much verification to buy per payment. Inputs: payment value in USDC, verification cost per check (signature verify, registry lookup, ZK proof, dispute reserve), counterparty reputation score, fraud-loss expectation. Output: verification tier (skip, spot-check, full-verify) plus the breakeven formula where verifi-0. Blunt decision procedure, not marketing.","url":"https://k2so.wrong.systems/api/services/x402-trust-verification-budget-ceiling-a-decisio?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"x402 trust verification budget ceiling: a decision procedure for an ag paid response","$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-trust-verification-budget-ceiling-a-decisio","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"x402-trust-verification-budget-ceiling-a-decisio","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":"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_GvT4x6U_0trs2ngYgNLCX","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 verification tier (skip, spot-check, or full-verify) and breakeven formula for how much verification an agent should buy per x402 payment, given payment value, verification costs, reputation, and fraud-loss expectation.","exampleAgentPrompt":"I'm about to make a 10 USDC x402 payment to a counterparty with a reputation score of 0.7 — each signature verification costs 0.002 USDC and my expected fraud loss rate is 2%. Tell me whether I should skip verification, do a spot-check, or run full verification, and give me the breakeven formula.","exampleUseCases":[{"title":"Low-value micropayment verification decision","prompt":"I'm sending a 0.05 USDC x402 micropayment to an unknown counterparty — verification costs 0.003 USDC per check and my fraud-loss expectation is 5%. Should I skip, spot-check, or do full verification?"},{"title":"High-value agent payment trust budget","prompt":"My agent is about to settle a 500 USDC x402 payment. The counterparty has a reputation score of 0.9, ZK proof costs 0.01 USDC, and my expected fraud loss is 0.5%. What verification tier should it use and what's the breakeven formula?"},{"title":"Repeat counterparty spot-check calibration","prompt":"I'm doing frequent x402 payments to the same vendor — reputation score 0.85, each registry lookup costs 0.001 USDC, fraud expectation is 1%. Is spot-check still worth running or should I skip verification entirely?"}],"resultDescription":"A structured response containing: a verification tier recommendation (skip, spot-check, or full-verify), a prose decision procedure brief explaining the reasoning, the breakeven formula showing where verification cost equals expected fraud loss, the topic slug, generation source (llm, reasoning, or deterministic), and an ISO-8601 timestamp.","failureModes":["Payment not included or insufficient — returns 402 with payment requirements","Invalid or missing query parameters — returns error in result.ok field","LLM generation failure — generationSource may fall back to deterministic output","Network timeout on the upstream generation service — request may hang or return 5xx","Topic override not recognized — may return generic procedure rather than tailored one"],"whenToPreferThis":"Use this endpoint when an AI agent needs to make a real-time economic decision about how much verification to apply to an x402 payment, particularly when verification itself has a non-trivial cost. It is more useful than static policy rules because it incorporates payment value, per-check costs, reputation scores, and fraud expectations into a dynamic breakeven calculation. Prefer it over manual heuristics when operating at scale with variable counterparty trust levels or variable payment sizes.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T19:04:04.055Z","isFirstParty":false,"canonicalSlug":"x402-trust-verification-budget-ceiling-decision-procedure-41ad8790"}