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x402-data-api Wallet Bundle (Base Mainnet)
x402
x402-data-api Wallet Bundle (Base Mainnet) is a paid API for AI agents from x402-data-api.sigrunner.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Returns ETH balance, USD value, transaction count, and contract/EIP-7702 delegated-EOA status for a Base mainnet address in a single call.
Price / call$0.003
Success—
StatusUnknown
How this service works
Wallet bundle: ETH balance + balance_usd + tx count + contract-code check (EIP-7702 delegated-EOA aware) for a Base mainnet address, in one call.
Output
A JSON object containing the address's ETH balance, its equivalent USD value, lifetime transaction count on Base mainnet, a boolean indicating whether it is a contract, contract code size in bytes, and EIP-7702 delegated-EOA detection status.
Example use cases
Verify wallet legitimacy before airdrop
“I need to check if 0x8ba1f109551bD432803012645Ac136ddd64DBA72 on Base is a legit wallet or a contract before sending them an airdrop. Can you grab their ETH balance, USD value, transaction history count, and whether they're actually a person's wallet or a smart contract?”
Monitor whale activity and holdings
“Pull the complete wallet snapshot for 0x2E215612e1b935eAeD955b46fa529d66A01eBDb2 on Base — I want to see their total ETH holdings in USD, how active they've been with transaction count, and confirm if this is a contract address or a regular wallet account.”
Audit contract deployment status
“Can you give me the full wallet details for 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Base? I need the ETH balance, its value in USD, their transaction count, and whether it's flagged as a contract or delegated EOA under EIP-7702.”
Technical details
Endpoint
GEThttps://x402-data-api.sigrunner.workers.dev/chain/walletWhen to prefer
Use this endpoint when you need a comprehensive wallet snapshot on Base mainnet and want to avoid making multiple separate RPC calls. It is ideal for agents that need ETH balance, USD valuation, activity level (tx count), and contract classification including EIP-7702 delegated-EOA detection all at once with a single $0.003 payment.
Side effects
- Missing or malformed address query param returns an error
- Non-Base or Ethereum mainnet addresses may return unexpected results or errors
- Payment not fulfilled (x402 protocol) results in 402 Payment Required response
- Rate limiting or upstream RPC failure may cause transient errors
- Checksummed vs non-checksummed address format issues
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "base",
"address": "0x4200000000000000000000000000000000000006",
"tx_count": 4,
"balance_eth": 17.2654321,
"balance_usd": 31886.15,
"balance_wei": "17265432100000000000",
"is_contract": true,
"delegate_address": null,
"is_eip7702_delegate": false
}
}Tags
x402
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