ToolVet
75trust / 100

Monitor Check

by HubVibe in Developer tools

x402 APIPassing, checked 2 h ago

Website change detection, step two: re-fetch a page saved with monitor.snapshot and get whether it changed, how old the baseline is, and a written summary of what changed. Use it to track price changes, terms updates, new job posts or competitor moves. Input: url; optional language.

POST https://hubvibe-io.com/work/monitor/check

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
352 ms typical, 464 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

POST https://hubvibe-io.com/work/monitor/check

Each call costs $0.5 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.

POST https://hubvibe-io.com/work/monitor/check
content-type: application/json

{
  "url": "https://example.com"
}

Parameters

ParameterTypeRequiredDescription
languagestringNo
urlstringYes

Example response

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

Example response, 37 lines
{
  "attribution": [
    {
      "text": "Translated by Google",
      "url": "https://translate.google.com"
    }
  ],
  "price_usd": 0.5,
  "provenance": {
    "attempts": 1,
    "elapsed_ms": 340,
    "providers_used": [
      "coinbase-advanced-trade-public"
    ],
    "steps": [
      {
        "ms": 312,
        "ok": true,
        "provider": "coinbase-advanced-trade-public",
        "reason": "provider_timeout",
        "step": "quote"
      }
    ]
  },
  "receipt_id": "rcpt_9f1c2b3a4d5e6f70",
  "receipt_url": "/work/receipts/rcpt_9f1c2b3a4d5e6f70",
  "result": {
    "baseline_age_seconds": 86400,
    "change_summary": "The pricing section now lists a $0.15 bundle; the headline is unchanged.",
    "changed": true,
    "model": "gemini-2.5-flash",
    "title": "Example Domain",
    "url": "https://example.com"
  },
  "status": "ok",
  "worker": "monitor.check"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.5.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://hubvibe-io.com/work/monitor/check' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://example.com"}'

# 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 - -X POST 'https://hubvibe-io.com/work/monitor/check' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://example.com"}' \
  | 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 $0.5 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.5" });
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 $0.5 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fhubvibe-io.com%2Fwork%2Fmonitor%2Fcheck&method=POST
const res = await pay("https://hubvibe-io.com/work/monitor/check", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "url": "https://example.com"
  }),
});
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 $0.5 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.5"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://hubvibe-io.com/work/monitor/check",
        json={
            "url": "https://example.com",
        },
    )
    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

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