ToolVet
73trust / 100

Check

by HookPulse in Other

x402 APIPassing, checked 6 h ago

HookPulse: one uptime check of a URL (status, response time, keyword, TLS certificate), paid per call

GET
https://hookpulse.net/api/x402/check
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
916 ms
964 ms slowest 5%
Last check
Passed
6 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://hookpulse.net/api/x402/check

Each call costs $0.01 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://hookpulse.net/api/x402/check?url=https%3A%2F%2Fexample.com%2F

Parameters

ParameterTypeRequiredDescription
expect_statusstringNoWhat counts as up: `200-399` by default, a range `a-b` or one code.
keywordstringNoText that must be in the first 64 KB of the page; it forces `GET`.
methodstringNo`GET` (default) or `HEAD`.
timeout_msintegerNo1000 to 30000, default 10000.
urlstringYesThe address to call: http or https, public, without user or password.

Example response

The provider's example. We can't check it without paying.

{
  "certificate": {
    "authorized": true,
    "endpoint": "https://example.com",
    "errors": [],
    "fingerprint": "85:CA:6A:B0:68:E9:BC:CE:88:B6:C4:AA:3C:47:F7:D1:72:28:13:4A:45:7F:87:0D:38:00:E6:22:3A:0D:F0:7A",
    "issuer": "SSL Corporation",
    "protocol": "TLSv1.3",
    "valid_from": "2026-09-26T22:49:11.000Z",
    "valid_until": "2026-12-25T22:56:35.000Z"
  },
  "certificate_error": null,
  "checked_at": "2026-10-24T11:51:44.520Z",
  "cobranca": {
    "preco_usd": "0.01",
    "repetido": false,
    "via": "x402"
  },
  "ms": 24,
  "ok": true,
  "reason": null,
  "status": 200,
  "url": "https://example.com/"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://hookpulse.net/api/x402/check?url=https%3A%2F%2Fexample.com%2F'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://hookpulse.net/api/x402/check?url=https%3A%2F%2Fexample.com%2F' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fhookpulse.net%2Fapi%2Fx402%2Fcheck
const res = await pay("https://hookpulse.net/api/x402/check?url=https%3A%2F%2Fexample.com%2F");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://hookpulse.net/api/x402/check?url=https%3A%2F%2Fexample.com%2F")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
6 h agoPassed402950 ms$0.01
11 h agoPassed402964 ms$0.01
17 h agoPassed402916 ms$0.01
27 h agoPassed402889 ms$0.01