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SiteCheck EVM Address Lookup
x402
SiteCheck EVM Address Lookup is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).
Looks up EVM wallet address details including native balance, nonce, code bytes, ENS name, delegation info, and account type across multiple EVM chains
Price / call$0.002
Success—
StatusUnknown
How this service works
Native balance, nonce and account type of an EVM address on Base (default), Ethereum, Arbitrum, Optimism or Polygon: a wallet, a contract, or an EIP-7702 delegated wallet with its delegate. On Ethereum also the ENS primary name, when it resolves back to the address. Read over public RPC.
Output
Returns a JSON object with the account's kind (EOA, contract, or EIP-7702-delegated), chain, nonce, native token balance (amount, symbol, and USD value), primary ENS name if any, delegation target address if EIP-7702, code byte count, checked timestamp, and data sources used.
Example use cases
Identify whale wallet holdings
“Look up the native ETH balance in USD and ENS name for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum — I want to know if it's a known account and how much ETH it holds.”
Check if address is a smart contract
“Is the address 0x5A7FC11397E9a8AD41BF10bf13F22B0a63f96f6d on Ethereum a regular wallet or a smart contract? Can you also tell me its nonce and any delegation info?”
Verify Base wallet balance before payment
“Before I send funds, can you check the current native token balance and nonce for 0xAbC123...def456 on Base so I know it's an active account?”
Technical details
Endpoint
GEThttps://api.sitecheck-api.workers.dev/api/evm/address?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, multi-field snapshot of an EVM address including balance, nonce, account type, and ENS name in a single call. Prefer it over raw RPC calls when you want USD-denominated balances and ENS resolution bundled together. Supports Base, Ethereum, Arbitrum, Optimism, and Polygon.
Side effects
- Invalid or malformed 0x address returns an error
- Unsupported chain name returns an error
- Address with no on-chain activity may return zero balance and nonce
- ENS resolution may fail or return null if no primary name is set
- RPC node timeouts can cause delayed or failed responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"kind": "eip7702-delegated",
"chain": "ethereum",
"nonce": 5969,
"native": {
"usd": 14491.96,
"amount": 5.76965394,
"symbol": "ETH"
},
"source": "https://ethereum-rpc.publicnode.com (eth_getBalance, eth_getTransactionCount, eth_getCode); Coinbase spot price; ENS reverse record on Ethereum",
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"checkedAt": "2026-10-14T04:49:17.947Z",
"codeBytes": 23,
"disclaimer": "Information only, not financial advice.",
"delegatedTo": "0x5A7FC11397E9a8AD41BF10bf13F22B0a63f96f6d",
"primaryName": "vitalik.eth"
}
}Tags
x402
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