ToolVet
79trust / 100

Verify Listing

by livecheck.fly.dev in Search & web

x402 APIPassing, checked 1 h ago

Before you scrape a job posting, Shopify or HTML product page, or eBay item, POST the specific URL you already have and Livecheck returns live, closed, or unknown plus title and signals (apply form, in-stock, sold-out, 404); not a search engine.

POST
https://livecheck.fly.dev/v1/verify/listing
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
499 ms
648 ms slowest 5%
Last check
Passed
1 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

POST https://livecheck.fly.dev/v1/verify/listing

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.

POST https://livecheck.fly.dev/v1/verify/listing
content-type: application/json

{
  "url": "https://boards.greenhouse.io/example/jobs/1842"
}

Parameters

ParameterTypeRequiredDescription
urlstringYesAbsolute http(s) URL of the specific job, product, or eBay item page to check. Not a search-results URL.

Example response

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

{
  "canonical_url": "https://boards.greenhouse.io/example/jobs/1842",
  "checked_at": "2026-08-30T21:00:00Z",
  "confidence": 0.92,
  "http_status": 200,
  "price_usd": 0.01,
  "route": "verify",
  "signals": [
    "apply form present",
    "no closure banner"
  ],
  "status": "live",
  "title": "Staff Backend Engineer — Northwind Labs",
  "url": "https://boards.greenhouse.io/example/jobs/1842"
}

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 -X POST 'https://livecheck.fly.dev/v1/verify/listing' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://boards.greenhouse.io/example/jobs/1842"}'

# 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://livecheck.fly.dev/v1/verify/listing' \
  -H 'content-type: application/json' \
  --data-raw '{"url":"https://boards.greenhouse.io/example/jobs/1842"}' \
  | 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%2Flivecheck.fly.dev%2Fv1%2Fverify%2Flisting&method=POST
const res = await pay("https://livecheck.fly.dev/v1/verify/listing", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "url": "https://boards.greenhouse.io/example/jobs/1842"
  }),
});
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.post(
        "https://livecheck.fly.dev/v1/verify/listing",
        json={
            "url": "https://boards.greenhouse.io/example/jobs/1842",
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

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