Verify OTP SMS API

Introduction to SMSGatewayCenter APIs

Welcome to SMSGatewayCenter’s API documentation hub! This guide helps you verify OTPs using our powerful Verify OTP API, part of our messaging suite including SMS API for bulk messaging, WhatsApp Business API for customer engagement, Voice Call API for automated alerts, and Two-Way SMS API for interactive communication. Our API supports POST and GET methods over HTTP, offering secure OTP verification for authentication. Ideal for developers in India, start integrating with our SMS gateway at unify.smsgateway.center/signup/!

Verify OTPs generated earlier to authenticate logins or transactions securely. This endpoint enhances your bulk SMS campaigns with real-time delivery reports and Unicode, ideal for 2-factor authentication. Learn more about Integrated OTP SMS.

API Endpoint

https://unify.smsgateway.center/SMSApi/otp

<?php

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => 'https://unify.smsgateway.center/SMSApi/otp?userid=YourUsername&password=YourPassword&format=json&mobile=91777xxxxxxx&sendMethod=verify&otp=438592%0A',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => '',
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => 'GET',
  CURLOPT_HTTPHEADER => array(
    'Cookie: SERVERID=webC1'
  ),
));

$response = curl_exec($curl);

curl_close($curl);
echo $response;

{
    "status": "success",
    "mobile": "91777xxxxxx",
    "transactionId": "0",
    "statusCode": "301",
    "reason": "OTP has been Verified Successfully."
}