{"uid":"cap_QOqJo1lMN-h2xRrnF_bPD","slug":"base-wallet-activity-due-diligence-api-x402-89aefe5a","name":"Base Wallet Activity & Due-Diligence API (x402)","description":"Analyze a Base wallet address for on-chain wallet due diligence, transaction-history research, and risk triage. Returns native balance, transaction and token-transfer counts, first and last activity, contract status, a heuristic activity score, and risk flags as JSON. Not identity verification or a guarantee that an address is safe.","url":"https://x402-wallet-profile-api-production.up.railway.app/wallet/:address?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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_CZ1iH4_i0N2B2-TcDVRN5","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes a Base blockchain wallet address and returns on-chain activity metrics, risk flags, and a heuristic activity score for due diligence and risk triage.","exampleAgentPrompt":"Can you run a due diligence check on the Base wallet 0x1234abcd5678ef901234abcd5678ef901234abcd — I want to know its transaction count, token transfer count, native balance, when it was first and last active, whether it's a contract, and any risk flags?","exampleUseCases":[{"title":"Pre-payment counterparty risk check","prompt":"Before I send 500 USDC to 0xabc123...def456 on Base, can you pull up its on-chain profile — transaction history, activity score, and any risk flags — so I can decide if it looks legit?"},{"title":"DeFi protocol user screening","prompt":"I need to screen the wallet 0x9876fedc...5432ab on Base before whitelisting it — give me its transaction count, token transfer count, first and last activity dates, contract status, and heuristic risk score."},{"title":"Investigating suspicious wallet activity","prompt":"I got an inbound transfer from 0xdeadbeef...cafe1234 on Base and want to know if it looks suspicious — can you check its activity score, risk flags, balance, and how long it's been active?"}],"resultDescription":"A JSON object containing the wallet's native ETH balance on Base, total transaction count, token transfer count, timestamps of first and last on-chain activity, a boolean indicating whether the address is a smart contract, a heuristic activity score (numeric), and a list of risk flags (e.g. new wallet, low activity, contract interaction patterns).","failureModes":["Invalid or malformed wallet address returns an error response","Address not found on Base (no activity) may return zero counts or empty fields","Network or RPC timeouts from Base node providers causing delayed or failed responses","Rate limiting if too many requests are sent in quick succession","Payment failure (insufficient USDC balance or x402 protocol issue) blocking the request"],"whenToPreferThis":"Choose this endpoint when you need a quick, structured on-chain profile of a Base network wallet address for due diligence, risk triage, or counterparty assessment — especially when you want a pre-computed activity score and risk flags rather than raw RPC data. It is well-suited for agentic workflows that need to screen wallets before payments, whitelisting, or interactions, and costs only $0.01 USDC per call via x402. Prefer alternatives if you need Ethereum mainnet or other chain data, full transaction history detail, or identity verification.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T06:30:26.009Z","isFirstParty":false,"canonicalSlug":"base-wallet-activity-due-diligence-api-x402-89aefe5a"}