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Base Wallet Activity & Due-Diligence API
x402
Base Wallet Activity & Due-Diligence API is a paid API for AI agents from x402-wallet-profile-api-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-15).
Returns transaction counts, token transfer counts, activity dates, native ETH balance, and heuristic risk flags for any Base blockchain wallet address.
Price / call$0.005
Success—
StatusUnknown
How this service works
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.
Output
A JSON object containing the wallet's chain, address, verdict (e.g. 'empty', 'active', 'suspicious'), first and last seen timestamps, age in days, native ETH balance, total transaction count, outgoing transaction count, token transfer count, activity score, risk flags array (e.g. 'no_activity', 'low_balance'), whether the address is a smart contract, data sources used (Base RPC, Blockscout), and a generation timestamp.
Example use cases
Pre-payment wallet risk screening
“Before I send 500 USDC to 0xAbCd1234AbCd1234AbCd1234AbCd1234AbCd1234 on Base, can you check how active that wallet is, what its balance looks like, and whether it has any risk flags like being brand new or having no activity?”
KYC-lite counterparty due diligence
“I'm onboarding a new partner who gave me their Base wallet address 0xDeAdBeEf00000000000000000000000000001234 — can you pull a profile on it showing first and last activity dates, total transactions, and any heuristic risk indicators?”
Fraud triage for flagged address
“Our fraud team flagged Base address 0xFeed0000000000000000000000000000DeadC0de — can you get me a full activity report including outgoing tx count, token transfers, activity score, and verdict so we can decide how to handle it?”
Technical details
Endpoint
GEThttps://x402-wallet-profile-api-production.up.railway.app/wallet?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, structured on-chain due diligence for a Base chain wallet address — especially for pre-payment risk screening, counterparty vetting, or fraud triage. It is purpose-built for the Base L2 network and aggregates data from both Base RPC and Blockscout into a single risk-profiled response. Prefer it over raw RPC calls when you need heuristic risk flags, a pre-computed activity score, and a human-readable verdict without writing custom blockchain queries.
Side effects
- Invalid or malformed wallet address returns an error response
- Address not found on Base returns empty/null activity fields with 'empty' verdict
- Network timeout from Base RPC or Blockscout causes delayed or failed response
- Rate limiting or payment failure (x402) results in 402 Payment Required
- Non-Base chain addresses are not supported and may return incorrect or empty results
Output
Schema · Response
{
"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
}
}Tags
x402
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