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x402node Multichain Native & ERC20 Token Balance
x402
x402node Multichain Native & ERC20 Token Balance is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.004/call, not verified (last probed 2026-10-29); live alternatives: agentsvc.io EVM Balance Lookup ($0.002) and Multichain Wallet Portfolio ($0.005).
Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5. Live alternatives for the same use case: agentsvc.io EVM Balance Lookup ($0.002) · Multichain Wallet Portfolio ($0.005).
Returns the native coin balance (ETH, MATIC, etc.) or ERC20 token balance for any wallet address on Ethereum, Base, Arbitrum, Optimism, or Polygon
Price / call$0.004
Success—
StatusUnknown
How this service works
Native coin balance for any address on Ethereum, Base, Arbitrum, Optimism or Polygon, optionally an ERC20 token balance with symbol and decimals. wallet balance, eth balance, erc20 token balance, check address balance, multichain balance Accepts payment on Base or Solana — either network works.
Output
Returns the native coin balance (e.g. ETH in wei and formatted) for the given address on the specified chain. If an ERC20 contract address is provided, returns the token balance along with the token symbol and decimals.
Example use cases
Example prompt
“What's the current ETH balance for wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on the Base network, and also check its USDC balance using token contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913?”
Technical details
Endpoint
GEThttps://api.x402node.dev/chain/balance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need on-chain balance data for a wallet across Ethereum, Base, Arbitrum, Optimism, or Polygon — either for native coins or any ERC20 token. Prefer this over general-purpose blockchain explorers when you need a simple, low-latency programmatic balance check without scraping an explorer UI.
Side effects
- Invalid or malformed wallet address returns an error
- Unsupported chain identifier returns an error
- Invalid ERC20 contract address returns an error or zero balance
- RPC node unavailable leads to timeout or 5xx error
- Rate limiting or payment failure returns 402 or 429
Input
{
"chain": "ethereum",
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_hint": "x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)",
"chain": "ethereum",
"native": {
"wei": "5690764439481747771",
"formatted": "5.690764439481747771"
},
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}Tags
x402
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Zero review prompt (fires after every successful call)
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