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EVM Address Profile & Contract Detection
x402
EVM Address Profile & Contract Detection is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns contract/EOA type detection, bytecode size, transaction nonce, and native balance for any address across five EVM chains
Price / call$0.005
Success—
StatusUnknown
How this service works
Profile any address on five EVM chains: contract or EOA detection, bytecode size, transaction nonce and native balance. address type, contract detection, is contract or wallet, address profile, eoa check, onchain identity Accepts payment on Base or Solana — either network works.
Output
Returns whether the address is a contract or EOA, the bytecode size in bytes (0 for wallets), the transaction nonce (outgoing tx count), and the native coin balance — all drawn live from the specified EVM chain (Ethereum, Base, Arbitrum, Optimism, or Polygon).
Example use cases
Example prompt
“Can you profile the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum — tell me whether it's a contract or a regular wallet, its current ETH balance, nonce, and bytecode size?”
Technical details
Endpoint
GEThttps://api.x402node.dev/chain/address-infoWhen to prefer
Use this endpoint when you need a quick multi-dimensional profile of any EVM address — especially when you need to simultaneously determine if it's a contract, check its activity level via nonce, and confirm its balance, across any of five supported chains. Prefer this over a raw balance check endpoint when contract detection is also needed.
Side effects
- Invalid or malformed address returns an error
- Unsupported chain specified returns an error
- Network timeout or RPC unavailability may cause failed lookup
- Address with no on-chain activity may return zero values for nonce and balance
Input
{
"chain": "ethereum",
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"type": "contract",
"_hint": "x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)",
"chain": "ethereum",
"nonce": 5896,
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"everUsed": true,
"codeBytes": 23,
"nativeBalance": "5.690764439481747771"
}Tags
x402
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