{"uid":"cap_YtYF7M1ajoXfHFm-Yx8nc","slug":"base-wallet-activity-due-diligence-api-b89898d0","name":"Base Wallet Activity & Due-Diligence API","description":"Base wallet activity API for due diligence and risk triage. Get transaction and token-transfer counts, activity dates, native balance, and heuristic risk indicators. From $0.005 USDC per call via x402.","url":"https://x402-wallet-profile-api-production.up.railway.app/wallet/0x0000000000000000000000000000000000000001?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"chain":"base","label":null,"address":"0x0000000000000000000000000000000000000001","ageDays":null,"verdict":"empty","lastSeen":null,"firstSeen":null,"riskFlags":["no_activity","low_balance"],"balanceEth":"0.0","isContract":false,"dataSources":["base_rpc","blockscout"],"generatedAt":"2026-01-01T00:00:00.000Z","totalTxCount":0,"activityScore":0,"tokenTransfers":0,"outgoingTxCount":0}},"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_9bp7l5bdogW4627QkPgbZ","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":"Returns on-chain activity metrics, risk flags, and a heuristic verdict for any Base network wallet address","exampleAgentPrompt":"Can you pull the due-diligence profile for Base wallet 0xAbC123...def — I want to know its transaction count, token transfers, ETH balance, how old it is, and whether there are any risk flags before I send funds to it.","exampleUseCases":[{"title":"Pre-payment counterparty screening","prompt":"Before I send 500 USDC to 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Base, can you check if that wallet has any risk flags, what its activity score is, and how long it's been active?"},{"title":"DeFi protocol user risk triage","prompt":"I need to triage a list of wallets that signed up for our platform — start with 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 and tell me its verdict, total transaction count, and whether it's a contract or a regular wallet on Base."},{"title":"Fraud investigation on suspicious wallet","prompt":"We got a report of a suspicious wallet at 0x1234567890abcdef1234567890abcdef12345678 — can you check its activity on Base, see when it was first and last active, what its balance is, and list any risk flags it has?"}],"resultDescription":"A JSON object containing: the wallet address, chain identifier, a verdict label (e.g. 'empty', 'active', 'suspicious'), first and last seen timestamps, wallet age in days, total transaction count, outgoing transaction count, token transfer count, native ETH balance, a numeric activity score (0-100), a boolean indicating whether the address is a smart contract, an array of risk flag strings (e.g. 'no_activity', 'low_balance'), the data sources used, and a generatedAt timestamp.","failureModes":["Invalid or malformed wallet address returns an error response","Address not found on Base network may return null fields and empty verdict","Network timeouts from RPC or Blockscout data sources may cause partial data","Rate limiting or payment failure (x402) prevents the call from completing","Very new wallets may return null for firstSeen/lastSeen and ageDays"],"whenToPreferThis":"Choose this endpoint when you need quick, structured due-diligence data specifically on Base network wallet addresses — including activity history, risk heuristics, and contract detection — in a single paid API call. Prefer it over generic block explorers when you need a machine-readable risk verdict and structured fields rather than raw transaction lists, and when you need sub-cent-cost programmatic screening at scale via x402 micropayments.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T12:32:10.627Z","isFirstParty":false,"canonicalSlug":"base-wallet-activity-due-diligence-api-b89898d0"}