All projects on Base matching “wallet lookup”

Base wallet lookup / address research API: ETH + USDC balance with USD value (CoinGecko/Coinbase quotes), EOA or smart contract, nonce (tx count), gas base fee, ERC-20 token holdings and recent USDC inflows/outflows with counterparty count for any Base mainnet address. Wallet analytics, portfolio and onchain due diligence for agents. Live public RPC reads at request time; pay per call with x402 US

Per-call counterparty lookup. Pass ?ua=<counterparty-UA>. Returns ONE signed row: has_record (yes/no), payment-attached count, settlement count, class, verdict (known_payer | probe_only | low_signal | unknown), with Ed25519 attestation. Pay $0.01 USDC on Base or Solana per call. Call it before every transaction to check if a counterparty has ever paid at this merchant seat. Wallet-based lookup (?w

Address security check — detect malicious wallets, known phishing addresses, scam contracts, and blacklisted entities across all EVM chains. Chain-independent lookup against multi-chain security databases. No API keys needed. Accepts USDC payments on Base and Solana

Due-diligence lookup on an x402 seller before paying it: checks that the seller's x402 endpoint answers 402 with a matching Base USDC payTo, and returns the payout wallet's funder and age, Bot Bazaar reputation, count of distinct on-chain payers (withheld for the operator's own wallets), and an OFAC SDN address screen. Query by payTo wallet or endpoint URL.

Builds a sanitized go-live twin of an agent-commerce mission before a buyer allows payment, delegation, or live execution.