Latest block number
x402Grade CLast checked 25 min ago
GET https://agent402.tools/api/block-number
The latest block number on Ethereum, Base, Polygon, Arbitrum or Optimism from keyless public nodes with fallback. Use it as the cheapest possible on-chain read: a liveness check for a chain, a timestamp anchor for a query, or the first paid call to prove an x402 client works end to end.
Price$0.001per chain read · paid in USD on Solana
Uptime100%
5/5 probes · 346 ms
Score64Grade C
Paid usage, 30 days0payers · 0 calls
Warnings
Wallet mismatch The payout wallet in its live payment answer differs from its catalogue listing on the same network.
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://agent402.tools/api/block-number"
# 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 12:31 | Valid 402 | 402 | 357 ms | $0.001 |
| 2026-10-11 08:00 | Valid 402 | 402 | 346 ms | $0.001 |
| 2026-10-11 03:30 | Valid 402 | 402 | 470 ms | $0.001 |
| 2026-10-10 23:00 | Valid 402 | 402 | 298 ms | $0.001 |
| 2026-10-10 17:15 | Valid 402 | 402 | 96 ms | $0.001 |
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