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Agent Data Tools: ERC-20 Token Balance on Base
x402
Agent Data Tools: ERC-20 Token Balance on Base is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-19).
Returns the ERC-20 token balance for a given wallet address on the Base blockchain, including human-readable and raw amounts.
Price / call$0.003
Success—
StatusUnknown
How this service works
ERC-20 token balance of a wallet on Base (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use base_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.
Output
Returns a JSON object with the wallet's token balance as a human-readable decimal string (e.g. '2.5'), the raw integer balance, the token symbol, decimals, the chain name ('Base'), chain ID (8453), the token contract address, and the queried wallet address.
Example use cases
DeFi portfolio balance check
“Check how much USDC the wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 holds on Base using the USDC contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.”
Pre-payment token sufficiency check
“Before I send a transaction, verify that wallet 0xAbc123...def has at least 50 USDC on Base — the USDC token contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.”
Agent treasury monitoring
“Check the current balance of our agent's treasury wallet 0x1234...5678 for the WETH token at contract 0x4200000000000000000000000000000000000006 on Base so I know if we need to top it up.”
Technical details
Endpoint
GEThttps://agent-data-tools.revmesh2074.workers.dev/base/token-balance?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need the ERC-20 token balance of a specific wallet on the Base L2 network with no API key or account setup, paying only $0.001 per call in USDC. Prefer this over Etherscan or Alchemy when you want a pay-per-use model with no subscription, or when you need a simple lookup that integrates with x402 micropayment flows for AI agents.
Side effects
- Invalid or malformed 0x token contract address returns an error
- Invalid or malformed 0x wallet address returns an error
- Token contract not deployed on Base returns an empty or zero balance
- Network/RPC timeout on Base node returns a 5xx error
- Missing required query parameters (token or address) returns a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"raw": "2500000",
"chain": "Base",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"symbol": "USDC",
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"balance": "2.5",
"chainId": 8453,
"decimals": 6
}
}Tags
x402
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