twin.unykorn.org
x402Grade BLast checked 1 hour ago
POST https://twin.unykorn.org/erc721-balance
How many NFTs from one collection an address holds — Genesis402 / UnyKorn Operator Network
Price$0.003per chain read · paid in USD on Base
Uptime100%
5/5 probes · 796 ms
Score75Grade 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 POST "https://twin.unykorn.org/erc721-balance"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-11 13:02 | Valid 402 | 402 | 700 ms | $0.003 |
| 2026-10-11 08:45 | Valid 402 | 402 | 1141 ms | $0.003 |
| 2026-10-11 04:15 | Valid 402 | 402 | 1096 ms | $0.003 |
| 2026-10-10 23:45 | Valid 402 | 402 | 796 ms | $0.003 |
| 2026-10-10 18:30 | Valid 402 | 402 | 249 ms | $0.003 |
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