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Multichain RPC - Wallet Balance
x402
Multichain RPC - Wallet 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 2026-09-14).
Returns native coin and ERC-20 token balances for any wallet address on Base, Polygon, Arbitrum, Optimism, or Ethereum, in both raw and human-readable decimal formats.
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 queried chain name, the wallet address, and a native balance object with the raw wei amount, human-readable decimal amount, and the coin symbol (e.g. ETH, MATIC). The response is returned in a single call, combining raw and formatted amounts for immediate use.
Example use cases
DeFi portfolio balance tracker
“Check the ETH balance on Base for wallet 0xAbCd1234...5678 and tell me both the raw wei and the decimal amount so I can track my portfolio.”
Pre-transfer funds verification
“Before I send a transaction, can you confirm how much MATIC is in wallet 0x9876...FeDc on Polygon right now in a human-readable amount?”
Cross-chain asset audit
“I need to audit a wallet — look up the native coin balance for 0x1111...AAAA on Arbitrum and tell me the symbol and decimal balance.”
Technical details
Endpoint
GEThttps://multichain-rpc.clankerceo.workers.dev/wallet-balanceWhen to prefer
Choose this endpoint when you need a fast, single-call balance lookup for a wallet on any of the five supported EVM chains (Base, Polygon, Arbitrum, Optimism, Ethereum) and want both raw wei and human-readable decimal in one response. It is ideal for agents that need on-chain balance data without setting up their own RPC infrastructure, and especially useful when cost predictability matters ($0.002 USDC per call). Prefer alternatives if you need historical balance data, multiple wallets in batch, or chains outside the supported five.
Side effects
- Invalid or malformed wallet address returns an error or empty result
- Unsupported chain identifier returns an error — only Base, Polygon, Arbitrum, Optimism, and Ethereum are supported
- Network timeout or RPC node unavailability may result in a failed response
- Missing required query parameters (chain or address) causes a 400-level error
- Rate limiting or payment failure (x402) blocks the response
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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