Northline ChainKit
x402Grade CLast checked 1 hour ago
GET https://northline-chainkit.northline-c86.workers.dev/v1/address/profile
Preflight any address on Base or Arc before paying or approving it: EOA vs contract vs EIP-7702-delegated wallet, EIP-1967 proxy implementation/admin, owner(), Safe multisig threshold, ERC-20 metadata, USDC + native balance, Sourcify verification, and risk flags.
Price$0.005per chain read · paid in USD on Base
Uptime100%
4/4 probes · 595 ms
Score69Grade C
Paid usage, 30 days0payers · 0 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://northline-chainkit.northline-c86.workers.dev/v1/address/profile"
# 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 11:46 | Valid 402 | 402 | 542 ms | $0.005 |
| 2026-10-11 07:15 | Valid 402 | 402 | 583 ms | $0.005 |
| 2026-10-11 02:46 | Valid 402 | 402 | 647 ms | $0.005 |
| 2026-10-10 22:30 | Valid 402 | 402 | 607 ms | $0.005 |
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