{"uid":"cap_mPQ0AMlQv5nN6dWTAhIea","slug":"x402-seller-audit-on-chain-web-reputation-due-diligence-37ba92c8","name":"x402 Seller Audit – On-Chain & Web Reputation Due Diligence","description":"Deep audit of an x402/ACP seller before trusting it: give a seller wallet or domain and get a full report — on-chain settlement reputation (settlements, unique counterparties, wash-trade/sybil, OFAC), the seller's advertised endpoints (from its /.well-known/x402.json), on-chain liveness, web reputation and red flags — fused into a TRUSTED/CAUTION/AVOID verdict with a signed, offline-verifiable receipt. Deeper than a pass/fail badge: the full seller due-diligence dossier for agentic payments.","url":"https://x402-endpoints.onrender.com/x402/seller-audit","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","required":["seller"],"properties":{"depth":{"type":"string","description":"On-chain depth: 'shallow' (~200 settlements) or 'deep' (~500)"},"seller":{"type":"string","description":"Seller wallet (0x + 40 hex) or domain, e.g. 'api.example.com'"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"error":null,"query":{"depth":"shallow","domain":null,"seller":"0x1D1B81247C407521E2A01F3E21514870dcf1620f","resolved_wallet":"0x1D1B81247C407521E2A01F3E21514870dcf1620f"},"cached":false,"source":"Seller discovery + seller-trust + web signals + Claude Haiku","reasons":[{"code":"ONCHAIN_VERDICT","label":"On-chain seller-trust: TRUSTED (score 88)","weight":-0.2}],"summary":"Wallet shows a healthy, diverse on-chain settlement history with no OFAC or wash-trade signals; reputation is strong.","verdict":"TRUSTED","identity":{"domain":null,"discovery_error":"wallet input","is_wallet_input":true,"resolved_wallet":"0x1D1B81247C407521E2A01F3E21514870dcf1620f","discovery_available":false},"liveness":{"note":"Liveness from on-chain settlement recency (real), not home probing.","available":true,"active_last_30d":true,"last_settlement":"2026-07-01T18:30:00Z","wallet_age_days":168,"last_settlement_age_seconds":51300},"endpoints":{"count":0,"advertised":[]},"red_flags":[],"timestamp":"2026-07-02T12:00:00Z","confidence":0.78,"disclaimer":"Composed x402 seller audit from on-chain settlement data, advertised discovery and public web signals. Uptime not home-probed. Heuristic, not legal/financial advice.","reputation":{"level":"strong","notes":"Healthy diverse settlement graph, no sanctions or wash-trade signals."},"web_sources":[{"url":"https://x402-endpoints.onrender.com","title":"x402-endpoints"}],"data_freshness":{"mode":"llm","as_of":"2026-07-02T12:00:00Z","sources":["seller discovery","seller-trust","web signals","Claude Haiku"],"age_seconds":0,"retrieved_at":"2026-07-02T12:00:00Z","deterministic":false},"recommendation":"Safe to transact; monitor for changes on large commitments.","signed_receipt":{"claims":{"kind":"x402_seller_audit","issuer":"x402-endpoints.onrender.com","seller":"0x1D1B...620f","verdict":"TRUSTED","issued_at":"2026-07-02T12:00:00Z","onchain_trust_score":88,"endpoints_advertised":0},"algorithm":"ed25519","available":true,"signature":"<hex>","public_key":"5b77...9f9d"},"directory_uptime":{"note":"Use on-chain settlement recency as liveness.","reason":"public directory uptime not retrievable","source":"402index.io","available":false},"onchain_reputation":{"error":null,"metrics":{"wallet_age_days":168,"settlement_count":213,"unique_counterparties":47},"verdict":"TRUSTED","available":true,"confidence":0.82,"trust_score":88}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","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":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_6pMnfFXriUERmWgeIKF0b","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs deep due diligence on an x402/ACP seller by wallet address or domain, fusing on-chain settlement reputation, OFAC screening, endpoint liveness, and web reputation into a TRUSTED/CAUTION/AVOID verdict with a signed, verifiable receipt.","exampleAgentPrompt":"Before I pay this seller, run a deep audit on 'api.example.com' — I want to know their on-chain settlement reputation, whether they're flagged on OFAC, any wash-trade or sybil signals, and whether their x402 endpoints are actually live. Use deep depth for the on-chain scan.","exampleUseCases":null,"resultDescription":"Returns a structured due-diligence dossier including: a top-level TRUSTED/CAUTION/AVOID verdict, on-chain settlement statistics (volume, unique counterparties, wash-trade/sybil indicators), OFAC sanctions screening result, the seller's advertised x402 endpoints from /.well-known/x402.json, endpoint liveness checks, web reputation signals and red flags — plus a signed, offline-verifiable receipt of the audit.","failureModes":["Invalid or unresolvable seller domain returns a 400 or error payload","Malformed wallet address (not 0x + 40 hex) returns a validation error","Seller has no on-chain history, resulting in a low-confidence verdict","OFAC or web reputation data sources temporarily unavailable, causing partial results","Rate limiting or payment failure returns 402 or 429","Deep depth scan may time out for wallets with very sparse activity"],"whenToPreferThis":"Use this endpoint when an AI agent needs to evaluate a new or unknown x402/ACP seller before executing a payment — especially when the stakes are non-trivial and a simple pass/fail badge is insufficient. Prefer this over generic OFAC screeners or token safety checkers when the subject is a payment API seller identified by wallet address or domain, and you need a fused multi-signal verdict (on-chain + compliance + liveness + web reputation) with a verifiable receipt.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:48:39.646Z","isFirstParty":false}