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Financial Data x402 – Multi-Balance
x402
Financial Data x402 – Multi-Balance is a paid API for AI agents from x402financialdata.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns the native ETH balances (in ETH and wei) for up to 20 EVM addresses on the Ethereum chain, paid per-call via x402 with USDC.
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.
Output
Returns a JSON object with a timestamp (as_of), the queried chain, the native symbol (ETH), and an array of balance entries — each containing the queried address, its ETH balance as a float, and its balance in wei as a string.
Example use cases
Portfolio ETH balance snapshot
“Can you look up the current ETH balances for these five wallet addresses so I can see the total ETH held across my portfolio: 0xabc...1, 0xabc...2, 0xabc...3, 0xabc...4, 0xabc...5?”
Whale wallet balance check
“I want to know how much ETH is currently sitting in this well-known whale address: 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae — give me the exact balance in both ETH and wei.”
DeFi treasury monitoring
“Check the on-chain ETH balances for these three DAO treasury addresses on Ethereum so I can see if any of them have dropped below 100 ETH: 0xaddr1, 0xaddr2, 0xaddr3.”
Technical details
Endpoint
GEThttps://x402financialdata.com/multi-balanceWhen to prefer
Choose this endpoint when you need native ETH balances for one or many EVM addresses on Ethereum without managing API keys or subscriptions — ideal for agents that need pay-as-you-go on-chain balance lookups via the x402 micropayment protocol. It supports batching up to 20 addresses in a single call, making it efficient for portfolio or treasury monitoring tasks.
Side effects
- Missing or empty 'addresses' query parameter returns a validation error
- More than 20 addresses supplied may result in an error or truncation
- Invalid or malformed EVM address format causes a rejection
- Unsupported chain value (anything other than 'eth') returns an error
- Payment failure or insufficient USDC balance causes x402 payment rejection, blocking the response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-07-31T03:43:30.000000",
"chain": "eth",
"balances": [
{
"address": "0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae",
"balance": 7774.49179078,
"balance_wei": "7774491790776062094342"
}
],
"native_symbol": "ETH"
}
}Tags
x402
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