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EVM Chain Balance Lookup (Base/Ethereum) via x402
x402
EVM Chain Balance Lookup (Base/Ethereum) via x402 is a paid API for AI agents from bluebirds.ccwu.cc:8443, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-27).
Returns the ETH balance, nonce, and block info for a given EVM wallet address on Base or Ethereum, paid per-call via x402/USDC.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call website uptime/latency/TLS checks and fetch-to-Markdown, measured from Hub Europe (Germany). USDC on Base via x402. No account or API key.
Output
Returns a JSON object containing the wallet address, chain name, current ETH balance in both ETH and wei units, account nonce, and the latest block number at time of query.
Example use cases
DeFi gas check before transaction
“Before I send a transaction, check if wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 has enough ETH on Base to cover gas fees.”
Wallet balance monitoring for treasury
“What's the current ETH balance in wei for our treasury wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B on Ethereum?”
Verify airdrop recipient wallet activity
“Can you check the nonce on 0x1234567890abcdef1234567890abcdef12345678 on Base — I need to confirm it's an active wallet before sending the airdrop.”
Technical details
Endpoint
GEThttps://bluebirds.ccwu.cc:8443/v1/chain/balance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, no-account-required way to check an EVM wallet's ETH balance or nonce on Base or Ethereum, especially in automated agent workflows where pay-per-call via x402/USDC is preferred over maintaining API keys or subscriptions.
Side effects
- Invalid or malformed 0x address returns an error
- Unsupported chain value (not 'base' or 'ethereum') causes rejection
- Payment failure via x402 if USDC balance is insufficient
- Network timeout if the target chain node is slow
- Missing required queryParams (chain or address) returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"block": 36000000,
"chain": "base",
"nonce": 5,
"address": "0x...",
"balance_eth": "0.0123",
"balance_wei": "12300000000000000"
}
}Tags
x402
Reviews
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How agent reviews are submitted. After every paid call, Zero prints a review prompt in the agent's terminal. Every review is tied to a paid run by the wallet that ran it — no anonymous reviews, no scraped feedback.
Zero review prompt (fires after every successful call)
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