Wallet Activity Summary API for AI Agents

Wallet due diligence for any EVM address on Ethereum or Base: native balance, recent transactions with counterparties, top token holdings with USD values when known, plus anomaly flags for burst activity, concentrated outflows and contract wallets. For counterparty screening, airdrop eligibility checks, portfolio snapshots, or checking a wallet before transacting with it.

Endpoint

POST https://call402.com/api/wallet-activity-summary — price $0.05 per call.

Input (JSON): {"address": "EVM address (required)", "chain": "\"ethereum\" | \"base\" (default ethereum)"}

Sources: public indexers (Blockscout) with on-chain RPC fallback.

How an agent pays

No account, no API key. The endpoint answers 402 Payment Required with x402 (v2, exact scheme) instructions; payment is USDC on Base mainnet (eip155:8453) via the PayAI facilitator. Machine-readable index: /pricing and /llms.txt.

FAQ

How can an AI agent check what a wallet has been doing?

POST the address to this endpoint and receive a structured summary: balances, recent activity with counterparties, top holdings and anomaly flags.

How much does a wallet report cost?

$0.05 per call, paid in Base USDC via x402. No subscription.