{"uid":"cap_8sSeOVtPIdQYGrVAXMHLu","slug":"merchant-x402-listing-honesty-gate-6fa267c2","name":"Merchant x402 Listing Honesty Gate","description":"Deterministic procedure for grading whether a discovery-listed x402 merchant's advertised terms match live reality before an agent pays. Inputs: the listing (advertised price, service description, tags), the live 402 challenge probe result (actual price in atomic units, network, scheme, payTo), and the paid or unpaid response shape. Procedure: (1) probe the listed URL without paying and record the challenge or its absence, (2) compare advertised price against the challenge price in atomic units","url":"https://k2so-8080.on.ascii.dev/api/services/merchant-x402-listing-honesty-gate","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"Merchant x402 Listing Honesty Gate paid response","$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_z__zePpLilXu5HHnWq6uH","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":"Grades whether a discovery-listed x402 merchant's advertised terms (price, description, tags) match the live 402 challenge reality before an agent pays","exampleAgentPrompt":"Before my agent pays that x402 merchant I found on the marketplace, run the honesty gate to check if their advertised price and service description actually match what the live 402 challenge is asking for.","exampleUseCases":[{"title":"Pre-payment merchant integrity check","prompt":"I'm about to let my agent pay an x402 API listed on agentic.market — can you probe it first and verify the advertised price of $0.01 USDC matches what the live 402 challenge is actually demanding, and that the service description isn't misleading?"},{"title":"Detecting bait-and-switch x402 listings","prompt":"This merchant showed up in the bazaar with a listed price of 100 atomic USDC units, but I want to make sure they're not pulling a bait-and-switch — run the honesty gate and tell me if the live 402 challenge price and payTo address match what was advertised."},{"title":"Automated agent payment safety gate","prompt":"My autonomous agent is evaluating a new x402 endpoint from a discovery listing — before it authorizes any payment, I need you to grade whether the advertised terms, network, and scheme match the live reality so we can decide if it's safe to proceed."}],"resultDescription":"Returns a structured verdict with an 'ok' boolean, a 'brief' prose explanation of the decision procedure, the generation source (llm/reasoning/deterministic), an ISO-8601 timestamp, and the service slug — indicating whether the merchant's advertised listing terms match the live 402 challenge reality","failureModes":["Listed URL does not return a 402 challenge (service may be down or not x402-enabled)","Advertised price units are ambiguous or in different denominations making comparison unreliable","Network or scheme mismatch cannot be resolved to a clear verdict","Probe of live URL times out before challenge can be captured","Missing required listing fields make comparison incomplete"],"whenToPreferThis":"Use this endpoint when an AI agent has discovered an x402 merchant through a marketplace or directory (agentic.market, bazaar, etc.) and needs to verify listing accuracy before committing a payment. Prefer it over generic x402 payment safety checks when the specific concern is listing honesty — i.e., whether the advertised price and terms match the live 402 challenge — rather than scam detection or wallet risk preflight.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:52:02.833Z","isFirstParty":false}