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Vextorium EVM Token Balance
x402
Vextorium EVM Token Balance is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).
Returns the token balance of a wallet address for an ERC-20 token on a specified EVM-compatible chain
Price / call$0.003
Success—
StatusUnknown
How this service works
Balance of one ERC-20 token in a wallet with symbol and decimals. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.
Output
Returns a JSON object with the token name, symbol, contract address, wallet address, human-readable balance (float), raw gross balance (string, without decimals applied), number of decimals, and the network queried.
Example use cases
DeFi portfolio wallet audit
“What's the USDC balance of wallet 0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf on Base? Use token contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.”
Pre-trade liquidity check
“Before I submit this swap, check if wallet 0xABC123...DEF has at least 500 WETH on Arbitrum — the WETH contract is 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1.”
Multi-chain token holdings lookup
“Tell me the USDT balance on Polygon for wallet address 0x1234...5678 using token contract 0xc2132D05D31c914a87C6611C10748AEb04B58e8F.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/evm-token-balance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need the current on-chain ERC-20 token balance for a specific wallet on a supported EVM chain (Base, Ethereum, Arbitrum, Optimism, Polygon, BNB, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain). Prefer it over Etherscan or Alchemy direct calls when you need a simple pay-per-use API without API key management. Ideal for AI agents needing balance checks as part of a DeFi workflow, pre-trade validation, or portfolio monitoring.
Side effects
- Invalid wallet address format returns an error or null balance
- Invalid or non-ERC-20 token contract address returns null/empty result
- Unsupported network name returns a validation error
- Token not deployed on the specified network returns null balance
- RPC node timeout or upstream chain unavailability causes a 5xx error
- Malformed request body (missing required fields) returns a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "USD Coin",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"symbol": "USDC",
"wallet": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"balance": 1.541325,
"network": "base",
"decimals": 6,
"gross_balance": "1541325"
}
}Tags
x402
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