Factline

Use when you need to check a phone number from any country: valid and possible against allocated ranges, E.164 and national format, country, and line type (mobile, landline, VoIP, toll-free, premium) with an SMS-capable hint. National numbers need a country, e.g. 0612345678 with country=NL.

Open endpoint ↗

Price per call: $0.003
Chain: Base
Method: GET
Paid calls · 30 days: 7

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://factline.dev/v1/phone/verify", { method: "GET" });
console.log(await res.json());

https://factline.dev/v1/phone/verify