ToolVet
78trust / 100

Phone

by SiteCheck in Developer tools

x402 APIPassing, checked 4 h ago

Checks and formats a phone number with libphonenumber: valid and possible flags, E.164, international and national formats, country, calling code and line type (mobile, fixed line, toll free and so on). Without a + sign, give the country. No network call.

GET
https://api.sitecheck-api.workers.dev/api/phone
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
170 ms
2.0 s slowest 5%
Last check
Passed
4 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

How to call it

GET https://api.sitecheck-api.workers.dev/api/phone

Each call costs $0.001 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://api.sitecheck-api.workers.dev/api/phone?number=%2B44+20+7946+0958

Parameters

ParameterTypeRequiredDescription
countrystringNoISO alpha-2 default country when the number has no +, e.g. DE
numberstringYesPhone number, e.g. +44 20 7946 0958

Example response

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

{
  "callingCode": "44",
  "checkedAt": "2026-10-14T07:00:59.157Z",
  "country": "GB",
  "e164": "+442079460958",
  "input": "+44 20 7946 0958",
  "international": "+44 20 7946 0958",
  "national": "020 7946 0958",
  "possible": true,
  "source": "libphonenumber-js (Google libphonenumber metadata)",
  "type": "fixed line",
  "valid": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/phone?number=%2B44+20+7946+0958'

# 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://api.sitecheck-api.workers.dev/api/phone?number=%2B44+20+7946+0958' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fphone
const res = await pay("https://api.sitecheck-api.workers.dev/api/phone?number=%2B44+20+7946+0958");
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.sitecheck-api.workers.dev/api/phone?number=%2B44+20+7946+0958")
    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
4 h agoPassed402172 ms$0.001
8 h agoPassed40264 ms$0.001
13 h agoPassed402143 ms$0.001
17 h agoPassed402170 ms$0.001
21 h agoPassed4022.0 s$0.001