{"uid":"cap_ZNjjfaUdkG0KRTZFBGzJC","slug":"quack-ai-agent-trust-check-bb5d11da","name":"Quack AI Agent Trust Check","description":"Agent Trust Check for 0xe3eaff1266e3c3bf660b2fce7dc7bbf2eb58dc83 — ERC-8004 identity, reputation, on-chain activity","url":"https://q402.quackai.ai/api/x402/agent-trust/:address","method":"GET","headers":{},"bodySchema":{"type":"object","title":"AgentTrustCheck","$schema":"http://json-schema.org/draft-07/schema#","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"EVM address as URL path segment (e.g. /api/x402/agent-trust/0xABC…)."},"description":{"type":"string"},"queryParams":{"type":"object","properties":{},"description":"No query parameters; the EVM address is the URL path segment.","additionalProperties":false}}},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"paidAt":{"type":"string","format":"date-time"},"address":{"type":"string"},"erc8004":{"type":"object","required":["isRegistered","registrations","source"],"properties":{"source":{"type":"string"},"isRegistered":{"type":"boolean"},"registrations":{"type":"array"}}},"receipt":{"type":"string","pattern":"^atx_"},"priceUsdc":{"type":"number"},"riskFlags":{"type":"array","items":{"type":"object","required":["flag","severity","evidence"],"properties":{"flag":{"type":"string"},"evidence":{"type":"string"},"severity":{"enum":["low","medium","high"],"type":"string"}}}},"reputation":{"oneOf":[{"type":"object","properties":{"source":{"type":"string"},"summaryValue":{"type":"string"},"feedbackCount":{"type":"number"},"valueDecimals":{"type":"number"}}},{"type":"null"}]},"onChainActivity":{"type":"object","required":["txCountBucket","recentActivityDetected","recentActivityWindowBlocks","source"],"properties":{"source":{"type":"string"},"txCountBucket":{"type":"string"},"recentActivityDetected":{"type":"boolean"},"recentActivityWindowBlocks":{"type":"number"}}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_oQPzA4LT8sZaJkpLoGsS-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns ERC-8004 identity registration, reputation score, risk flags, and on-chain activity for a given EVM wallet address","exampleAgentPrompt":"Can you run a trust check on the EVM address 0xe3eaff1266e3c3bf660b2fce7dc7bbf2eb58dc83 and tell me if it's ERC-8004 registered, what its reputation looks like, and whether there are any risk flags?","exampleUseCases":[{"title":"Vetting an unknown agent before interaction","prompt":"Before I let this agent 0xABCDEF1234567890abcdef1234567890abcdef12 perform any actions on my behalf, can you check its trust profile — is it ERC-8004 registered, does it have a reputation score, and are there any high-severity risk flags?"},{"title":"Screening wallet before DeFi transaction","prompt":"I'm about to send funds to wallet 0x1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b — can you check its on-chain activity and any risk flags first to make sure it's not flagged as suspicious?"},{"title":"Agent fleet trust audit","prompt":"We're onboarding a new autonomous agent with address 0x9f8e7d6c5b4a3f2e1d0c9b8a7f6e5d4c3b2a1f0e into our platform — pull its Quack AI trust check so I can see its ERC-8004 registration status and reputation before approving it."}],"resultDescription":"Returns a JSON object containing: the queried EVM address, ERC-8004 registration status (isRegistered, registrations array, source), reputation data (summary value, feedback count, decimals, or null if unavailable), on-chain activity metrics (transaction count bucket, recent activity detected, window in blocks, source), a list of risk flags with flag name/severity/evidence, the USDC price paid, a receipt ID (atx_ prefix), and a timestamp of when the check was paid for.","failureModes":["Invalid or malformed EVM address returns an error","Address not found on-chain may return empty on-chain activity and null reputation","Payment failure (insufficient USDC balance) prevents the check from running","Network congestion or RPC issues may cause delayed or failed on-chain data retrieval","ERC-8004 registry unavailable results in isRegistered returning false with empty registrations"],"whenToPreferThis":"Use this endpoint when an AI agent or autonomous system needs to assess the trustworthiness of an EVM wallet address before interacting with it — especially for agent-to-agent interactions where ERC-8004 identity and on-chain reputation matter. Prefer this over generic blockchain explorers when you need structured trust signals (risk flags, reputation scores, identity registration) in a single API call rather than raw transaction data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:33:52.280Z","isFirstParty":false}