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Agent Tollgate Engine – Wallet Balance Lookup
x402
Agent Tollgate Engine – Wallet Balance Lookup is a paid API for AI agents from skinwinking.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).
Returns the native token balance and SPL/ERC-20 token holdings for a given wallet address on a specified blockchain.
Price / call$0.003
Success—
StatusUnknown
How this service works
50 pay-per-call tools for agents over x402 (USDC on Base, Polygon, Solana): crypto market data, token audits, indicators, swap routing, web extraction, DNS/WHOIS/email checks, FX, weather and AI text/image tools.
Output
Returns a JSON object with a 'native' field containing the native token amount and symbol (e.g. SOL, ETH, MATIC), and a 'tokens' array listing each held token's mint/contract address and amount.
Example use cases
Portfolio snapshot for DeFi user
“Can you check the wallet balance for 0x742d35Cc6634C0532925a3b844Bc9e7595f62794 on Ethereum and tell me what native ETH and tokens it holds right now?”
Verify airdrop receipt on Base
“I just received an airdrop — can you confirm the current token balances in my Base wallet at address 0xAbC123...def456 so I can see if the tokens arrived?”
Multi-chain treasury audit
“Pull the wallet balance for address 9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM on Solana and tell me how much SOL and which SPL tokens it holds.”
Technical details
Endpoint
GEThttps://skinwinking.com/api/v1/data/wallet-balance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, pay-per-call balance check across Solana, Ethereum, Base, Polygon, or Arbitrum without setting up your own RPC node. It is ideal for AI agents that need on-demand wallet snapshots as part of a broader workflow (e.g. checking balances before routing a swap) and want to pay micro-fees in USDC rather than maintaining an API subscription.
Side effects
- Invalid or malformed wallet address returns an error or empty result
- Unsupported chain value causes a 400-level error
- Address with zero activity may return empty token arrays
- Network-level timeout or RPC unavailability causes failure
- Payment not processed (x402) prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"native": {
"amount": 0.0046,
"symbol": "SOL"
},
"tokens": [
{
"mint": "EPjF...",
"amount": 1.5
}
]
}
}Tags
x402
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