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Hermes x402 Toolkit – Base Chain Address Lookup
x402
Hermes x402 Toolkit – Base Chain Address Lookup is a paid API for AI agents from api.zlovev.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-19).
Returns on-chain data for a Base mainnet address including ETH balance, USDC balance, nonce, contract status, and block height — paid per call via x402/USDC.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call data API for AI agents. No API key, no account, no signup — pay USDC on Base (eip155:8453) per request; free /api/meta lists all 22 endpoints. One call each: web page to LLM-ready text and link previews; China A-share quotes and limit-up pool; Chinese text and pinyin; Base/Ethereum on-chain reads (address, token, ERC-20 balances, tx, blocks, transfer history, gas price in USD); NFT records (collection, owner, and ipfs:// tokenURI resolved through public gateways); full-page screenshots; email verification without sending mail; ENS forward/reverse resolution; smart-contract due diligence (ABI, verified source, proxy); token security facts (owner, renounced ownership, paused, bytecode capability selectors); domain dossier (RDAP, DNS, TLS certificate, HTTP facts, hosting network).
Output
Returns a JSON object with: ok (boolean success flag), block (latest block number at query time), nonce (transaction count), address (queried address), eth_balance (ETH balance as a string), is_contract (boolean), and usdc_balance (USDC balance as a string).
Example use cases
DeFi wallet balance check
“What's the current ETH and USDC balance for 0xAbCd1234...5678 on Base mainnet, and is it a contract or a regular wallet?”
Agent treasury monitoring
“Check the on-chain state of our agent's treasury address 0xDEAD...BEEF on Base — I need the ETH balance, USDC balance, and the latest block number it was checked against.”
Contract vs EOA verification
“Can you tell me if 0x1234...abcd on Base is a smart contract or an externally owned account, and what its current nonce is?”
Technical details
Endpoint
GEThttps://api.zlovev.com/api/chain/addressWhen to prefer
Choose this endpoint when you need quick, no-signup on-chain lookups for Base mainnet addresses, especially in agent workflows where API key management is impractical and micropayment-per-call via x402/USDC is acceptable. Prefer it over general Ethereum RPC calls when you want a clean JSON response without raw RPC boilerplate.
Side effects
- Invalid or malformed address (not a valid 0x-prefixed 20-byte hex) returns an error
- Address not found or zero-activity address may return zero balances
- Payment failure via x402 results in 402 response before data is returned
- Network congestion on Base may cause delayed or stale block data
- Non-Base mainnet addresses queried against Base RPC may return unexpected zero results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"block": 51396188,
"nonce": 1,
"address": "0x8335…2913",
"eth_balance": "12.5",
"is_contract": true,
"usdc_balance": "1000.5"
}
}Tags
x402
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