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DESK LEAD x402 – Native Balance Lookup
x402
DESK LEAD x402 – Native Balance Lookup is a paid API for AI agents from desk-x402.desk-x402-gh.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Returns the native cryptocurrency balance (in Wei) for a given wallet address on BSC or Base networks, paid via x402 micropayment.
Price / call$0.01
Success—
StatusUnknown
How this service works
Micropay research APIs (x402 v2 + bazaar). Free catalog at /.well-known/x402.json. Primary v2 accepts: Base eip155:8453 only. Legacy X-PAYMENT-TX still supports bsc|base via acceptsV1. Headers: X-PAYMENT-TX, X-PAYMENT-NETWORK, PAYMENT-SIGNATURE. No financial advice.
Output
Returns a JSON object with: ok (boolean success flag), nonce (integer), product (string identifier 'native_balance'), and balanceWei (hex-encoded balance in Wei for the queried address and network).
Example use cases
DeFi gas sufficiency check
“Before executing this on-chain transaction, check if wallet 0xAbCd1234567890abcdef1234567890abcdef1234 has enough native ETH balance on Base to cover gas — give me the balance in Wei.”
Multi-chain balance audit
“Look up the native token balance for address 0x1234567890abcdef1234567890abcdef12345678 on both BSC and Base so I can see where funds are held.”
Wallet monitoring for agent treasury
“Check the native balance of our agent treasury wallet 0xDeAdBeEf1234567890abcdef1234567890AbCdEf on Base and tell me the Wei amount so I know if we need to top it up.”
Technical details
Endpoint
GEThttps://desk-x402.desk-x402-gh.workers.dev/v1/native-balance?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, per-call micropayment (0.01 USDC) approach to fetching native token balances on Base or BSC without setting up a full RPC subscription. Ideal for agents that need occasional balance checks without committing to a node provider subscription. Prefer over full node queries when you want x402 payment-gated access with minimal setup.
Side effects
- Invalid or malformed wallet address (not matching ^0x[a-fA-F0-9]{40}$) returns an error
- Unsupported network value outside bsc/base/both causes rejection
- Missing required 'address' query parameter results in 400-class error
- Payment not provided or invalid x402 payment header causes 402 Payment Required
- Network congestion or RPC unavailability may cause timeouts or 503 errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"nonce": 0,
"product": "native_balance",
"balanceWei": "0x0"
}
}Tags
x402
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