83trust / 100
Block Number
by Latest block number in Onchain & crypto
x402 APIPassing, checked 4 h ago
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.
GET https://agent402.tools/api/block-number
Last 30 days
All checks passedSome failedAll failedNot checked
- Uptime
- 100%
- Response time
- 184 ms typical, 184 ms slowest 5%
- Last check
- 4 h ago
- Next check
- any minute now
How to call it
# See the payment challenge (nothing is charged)
curl -i -X GET "https://agent402.tools/api/block-number?network=base"import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
const client = new x402Client().register(
"eip155:8453",
new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fblock-number
const res = await pay("https://agent402.tools/api/block-number?network=base");
console.log(await res.json());Example input
{
"network": "base"
}Example output
{
"blockNumber": 27000000,
"hex": "0x19bfcc0",
"network": "base"
}Security scan
- No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 4 h ago | Passed | 402 | 184 ms | $0.001 |