{"uid":"cap_sgCAQPEVHDUovmrI0MVCp","slug":"x402-merchant-audit-9702a414","name":"x402 Merchant Audit","description":"Audit any x402 merchant before you pay it. Live probe, price-drift detection, settlement history and on-chain payment verification.","url":"https://merchant-audit.clankerceo.workers.dev/due-diligence","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"enum":["http"],"type":"string"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["target"],"properties":{"target":{"type":"string","description":"Absolute https URL of the x402 resource to audit."}}}}},"output":{"type":"object","required":["type"],"properties":{"type":{"enum":["json"],"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"checks":{"emits_402":true,"reachable":true,"has_buyers":false,"price_drift":false,"onchain_inflow_usdc":0},"target":"https://example-merchant.com/api/some-service","reasons":["listed but no settlements in 30d"],"verdict":"CAUTION"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fpRFAIieFT4bceluB7M1t","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Audits an x402 paid API endpoint before payment by live-probing it, detecting price drift, checking settlement history, and verifying on-chain USDC inflows.","exampleAgentPrompt":"Before I pay it, can you audit the x402 endpoint at https://some-merchant.com/api/data and tell me whether it's reachable, has real settlement history, and whether the price has drifted — I want a PASS, CAUTION, or FAIL verdict.","exampleUseCases":[{"title":"Pre-payment safety check on unknown API","prompt":"I found this x402 API at https://unknown-data-provider.com/api/prices that wants me to pay per call — can you audit it first and tell me if it's legitimate, whether real buyers have used it, and what the verdict is?"},{"title":"Detect price drift before recurring payment","prompt":"I've been using https://weather-api.example.com/forecast via x402 for a while — can you audit it now and check if the price has drifted from what it was when I first set it up?"},{"title":"Verify on-chain USDC settlements for a merchant","prompt":"Can you do a due diligence check on https://partner-merchant.io/api/translate and confirm whether it's actually settling USDC on-chain and has a real transaction history before we integrate it into our product?"}],"resultDescription":"Returns a JSON object with a verdict (PASS, CAUTION, or FAIL), an array of human-readable reasons, and a checks object containing: whether the endpoint is reachable, whether it emits HTTP 402, whether it has real buyers, whether price drift was detected, and the total on-chain USDC inflow over 30 days.","failureModes":["Target URL is unreachable — reachable: false returned with appropriate reason","Target does not emit 402 — emits_402: false, verdict likely FAIL","No on-chain settlement data found — onchain_inflow_usdc: 0, verdict likely CAUTION","Price drift detected — price_drift: true included in reasons","Invalid or missing target query parameter — likely 400 error or malformed response","Endpoint listed but no settlements in 30 days — verdict CAUTION with explanatory reason"],"whenToPreferThis":"Use this endpoint whenever an AI agent is about to make a payment to an unknown or semi-trusted x402 merchant and needs pre-payment due diligence. Prefer this over manual inspection when you need live reachability probing, on-chain settlement verification, and price drift detection in a single call. Especially valuable for new merchant integrations, recurring payment workflows, or any scenario where financial risk from a fraudulent or broken x402 endpoint is a concern.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:44:38.033Z","isFirstParty":false}