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Address Intelligence
x402
Address Intelligence is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).
Checks an Ethereum/Base address for EOA vs contract classification, ETH and USDC balances, transaction count, and activity level via Base RPC.
Price / call$0.02
Success—
StatusUnknown
How this service works
EOA vs contract, ETH + USDC balance, transaction count and activity level — straight from Base RPC. Useful for counterparty and wallet checks.
Output
Returns whether the address is an EOA or smart contract, current ETH balance, current USDC balance, total transaction count, and an activity level indicator — all sourced live from Base RPC.
Example use cases
Counterparty wallet check before payment
“Before I send funds to 0xAbC123...def, can you check if it's a real wallet or a smart contract, and see how active it is on Base?”
Screening a new DeFi protocol's deployer
“I want to do a quick sanity check on this deployer address 0xDead...Beef — is it an EOA or a contract, what's its ETH balance, and how many transactions has it done?”
Assessing inbound payment sender
“Someone just sent me USDC from 0x9999...1111 — can you look it up and tell me if it's an EOA or a contract, what its balance is, and whether it looks like an active account?”
Technical details
Endpoint
GEThttps://402.com.tr/api/x402/address-intel?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, cheap ($0.02) snapshot of a Base wallet or contract — especially for counterparty due diligence, pre-payment checks, or activity screening. Prefer it over heavier due-diligence endpoints when you only need basic identity (EOA vs contract), balance, and activity signals rather than full audit trails or approval graphs.
Side effects
- Invalid or malformed address returns an error response
- Address not found or zero-activity address may return zero balances and counts
- RPC rate limits or network congestion may cause timeouts
- Non-Base addresses (e.g. mainnet-only contracts) may return unexpected or empty results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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