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Datakoot ERC-20 Token Balance Lookup (Base)
x402
Datakoot ERC-20 Token Balance Lookup (Base) is a paid API for AI agents from x402.datakoot.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).
Returns the ERC-20 token balance of a wallet address on the Base blockchain, including symbol, decimals, and raw balance.
Price / call$0.002
Success—
StatusUnknown
How this service works
48 live public-data tools (security, packages, SEC filings, economy, FX, weather, domains, Federal Register, Base) for AI agents. $0.002 USDC per call on Base via x402, charged only on success. The same tools are free for 100 calls/day via MCP at <server>.datakoot.com/mcp.
Output
Returns a JSON object with the token contract address, holder wallet address, token symbol, human-readable balance (decimal string), raw balance (integer string), number of decimals, and the network name (base-mainnet).
Example use cases
Verify payout wallet before transfer
“Before I send funds, check how much USDC (0x833589fcd6edb6e08f4c7c32d4f71b54bda02913) is already sitting in wallet 0x21217f943Fe780A3E95eBe3dfC95bEF2203cF3bB on Base mainnet.”
Monitor airdrop recipient holdings
“I need to know if wallet 0xAbCd1234...5678 already received the airdrop — can you check its balance of our token at 0x1234567890abcdef1234567890abcdef12345678 on Base?”
DeFi portfolio balance check
“How many tokens does wallet 0xDeadBeef...1111 hold for the token contract 0xABCDEF0123456789ABCDEF0123456789ABCDEF01 on Base — give me the human-readable balance and the raw amount.”
Technical details
Endpoint
POSThttps://x402.datakoot.com/api/token_balance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a reliable, pay-per-success ERC-20 token balance read on Base mainnet without managing your own RPC infrastructure. Prefer it over raw RPC calls when you want a clean JSON response with symbol, decimals, and human-readable balance already resolved. It is particularly useful for AI agents that need to verify wallet holdings, check airdrop status, or enrich payment workflows — and the x402 micropayment model means you only pay on successful data delivery.
Side effects
- Invalid ERC-20 contract address format (not 0x + 40 hex chars) — returns error
- Invalid wallet address format — returns error
- Contract address is not a valid ERC-20 token on Base — may return zero balance or error
- Wallet has no holdings of the specified token — returns balance of 0
- Network congestion or RPC timeout — request may fail or be slow
- Payment not processed (USDC not deducted) — response not returned on failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| token | string | ERC-20 contract address on Base: 0x followed by 40 hex characters. |
| address | string | Wallet address whose balance to read: 0x followed by 40 hex characters. |
Output
Schema · Response
{
"type": "json",
"example": {
"token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"holder": "0x21217f943Fe780A3E95eBe3dfC95bEF2203cF3bB",
"symbol": "USDC",
"balance": "4.998",
"network": "base-mainnet",
"decimals": 6,
"balance_raw": "4998000"
}
}Tags
x402
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