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Multichain RPC Balance
x402
Multichain RPC Balance is a paid API for AI agents from multichain-rpc.clankerceo.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Returns native coin and ERC-20 token balances for a wallet address on Base, Polygon, Arbitrum, Optimism, or Ethereum, with both raw (wei) and human-readable decimal amounts.
Price / call$0.002
Success—
StatusUnknown
How this service works
Cheap, factual EVM chain lookups priced per call in USDC. Base, Polygon, Arbitrum, Optimism and Ethereum.
Output
A JSON object containing the chain name, the wallet address, and a native balance object with the raw wei amount, the human-readable decimal amount, and the native token symbol (e.g. ETH, MATIC, ARB). For ERC-20 queries, token balance details are also included.
Example use cases
DeFi portfolio balance checker
“Check the ETH balance on Arbitrum for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — I need both the wei amount and the readable decimal so I can see if there's enough to cover a transaction.”
Cross-chain fund verification
“I need to verify how much USDC the address 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B holds on Polygon — can you pull the balance with the human-readable amount?”
Automated wallet monitoring alert
“Check the native coin balance for 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Optimism and tell me the decimal amount so I can see if it's dropped below my threshold.”
Technical details
Endpoint
GEThttps://multichain-rpc.clankerceo.workers.dev/balanceWhen to prefer
Choose this endpoint when you need fast, per-call wallet balance lookups across Base, Polygon, Arbitrum, Optimism, or Ethereum without maintaining your own RPC infrastructure. It is ideal for AI agents that need on-demand balance checks priced at a low per-call USDC rate via x402, especially when both raw wei and human-readable decimals are required in a single call. Prefer it over general-purpose RPC providers when you want a simple GET interface with no auth setup beyond x402 micropayments.
Side effects
- Invalid or malformed wallet address returns an error response
- Unsupported chain name returns an error or empty result
- Network timeout on the underlying RPC node
- Payment not fulfilled triggers a 402 Payment Required response
- Missing required query parameters (address or chain) results in a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "base",
"native": {
"wei": "1000000",
"amount": "0.000001",
"symbol": "ETH"
},
"address": "0x…"
}
}Tags
x402
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