Data Lookup API
x402Grade BLast checked 5 hours ago
GET https://x402-seller.onrender.com/chain/balance
Check a wallet's live balance on Base mainnet: native ETH (e.g. to confirm it has enough for gas) plus an optional ERC20 token balance (e.g. USDC) when a token contract address is supplied. Sourced from Base's official public RPC.
Price$0.012per chain read · paid in USD on Base
Uptime100%
9/9 probes · 289 ms
Score77Grade B
Paid usage, 30 days3payers · 3 calls
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X GET "https://x402-seller.onrender.com/chain/balance"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-12 09:31 | Valid 402 | 402 | 136 ms | $0.012 |
| 2026-10-12 04:31 | Valid 402 | 402 | 179 ms | $0.012 |
| 2026-10-11 23:16 | Valid 402 | 402 | 448 ms | $0.012 |
| 2026-10-11 18:16 | Valid 402 | 402 | 289 ms | $0.012 |
| 2026-10-11 13:16 | Valid 402 | 402 | 417 ms | $0.012 |
| 2026-10-11 08:46 | Valid 402 | 402 | 400 ms | $0.012 |
| 2026-10-11 04:15 | Valid 402 | 402 | 76 ms | $0.012 |
| 2026-10-10 23:46 | Valid 402 | 402 | 424 ms | $0.012 |
| 2026-10-10 18:45 | Valid 402 | 402 | 139 ms | $0.012 |
Receipts
No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.
What a check proves