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Live ERC-20 Token Balance
x402
Live ERC-20 Token Balance is a paid API for AI agents from ai-data-marketplace-1042299154756.us-central1.run.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Reads the current ERC-20 token balance for a wallet or contract address on Base, Ethereum, or Arbitrum, returning raw and formatted amounts plus token metadata.
Price / call$0.001
Success—
StatusUnknown
How this service works
Read one wallet or contract's current ERC-20 balance directly from Base, Ethereum, or Arbitrum, including raw units and contract-supplied token metadata.
Output
Returns a JSON object with a success flag, the network name, token symbol, token decimals, the raw balance as a string (in smallest units), the formatted balance as a human-readable decimal string, and an array of any metadata warnings encountered during the call.
Example use cases
DeFi portfolio token snapshot
“Check how many USDT tokens the wallet 0xAbCd1234...5678 holds right now on Arbitrum, and tell me the formatted balance and the token's decimal precision.”
Treasury contract balance audit
“What's the current DAI balance held by smart contract 0x6B175474E89094C44Da98b954EedeAC495271d0F on Ethereum? I need both the raw units and the formatted number.”
Historical block balance lookup
“What was the WETH token balance of address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Base at block 12000000?”
Technical details
Endpoint
GEThttps://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/erc20_balanceWhen to prefer
Choose this endpoint when you need the current (or historical) ERC-20 token balance for a specific wallet or contract on Base, Ethereum, or Arbitrum, and you want both raw on-chain units and a human-readable formatted amount along with token metadata (symbol, decimals) in a single call. Prefer it over a generic eth_call endpoint when you want token metadata included automatically without manually ABI-encoding balanceOf calls.
Side effects
- Invalid or malformed token contract address returns an error or empty result
- Invalid wallet/account address returns an error
- Unsupported chain name returns a validation error
- Block tag too far in the past may not be available on all nodes
- Token contract address that is not ERC-20 compliant may produce metadata warnings or missing symbol/decimals
- Network congestion may cause slow or failed RPC responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"symbol": "USDC",
"network": "base",
"success": true,
"decimals": 6,
"balance_raw": "0",
"balance_formatted": "0.0",
"metadata_warnings": []
}
}Tags
x402
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