{"uid":"cap_Z7yJJOa0BL0y1zBBbfZt6","slug":"x402-merchant-audit-f72a72b2","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/merchant-risk","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_kBJbRpa3l0xejY8D6CxKw","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, checking price drift, settlement history, and on-chain USDC inflow.","exampleAgentPrompt":"Before I pay it, can you audit this x402 merchant endpoint — https://some-api.example.com/data — and tell me if it's safe to pay, whether it's had real settlements, and if there's been any price drift?","exampleUseCases":[{"title":"Pre-payment merchant safety check","prompt":"I found an x402 API at https://inference.coolstartup.com/v1/predict that charges per call — can you audit it and tell me if it's legitimate, reachable, and has real buyers before I integrate it?"},{"title":"Detecting price drift before auto-payment","prompt":"My agent is about to pay https://datafeeds.example.com/prices automatically — first audit that x402 merchant and flag if the price has drifted from what it advertised."},{"title":"Vetting a new x402 service listing","prompt":"I saw https://api.newmerchant.xyz/summarize listed on an x402 directory — can you audit it and show me its on-chain USDC inflow and settlement history so I know if it's worth trusting?"}],"resultDescription":"Returns a JSON object with a verdict (e.g. CAUTION, OK, RISKY), a list of human-readable reasons, and individual check flags: whether the endpoint emits 402, is reachable, has buyers, has price drift, and total on-chain USDC inflow over 30 days.","failureModes":["Target URL not reachable — endpoint may be offline or rate-limiting the probe","No settlement data found — merchant listed but no 30-day activity, verdict likely CAUTION","Invalid or non-HTTPS target URL returns validation error","On-chain data unavailable — blockchain indexer lag may cause stale inflow figures","Price drift detection may false-positive on legitimate tiered pricing"],"whenToPreferThis":"Use this endpoint when an AI agent is about to make an x402 micropayment to an unfamiliar API and needs pre-flight risk assessment. Prefer this over blindly paying when the merchant is newly listed, has no reputation, or when automated agents need a programmatic go/no-go signal before spending USDC.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:31:02.134Z","isFirstParty":false}