← SMS Studio

WhatsApp OTP for your app

Deliver a verification code to a customer in WhatsApp using an approved authentication template. Your application generates the code, sets its expiry and verifies what the customer enters.

Ask about WhatsApp OTP access

Example WhatsApp request

{
    "to": "447700900123",
    "code": "482913",
    "lang": "en"
}

API endpoints

POST /api/v1/whatsapp/otp

Enable delivery for your destinations

Ask the team to enable WhatsApp delivery on your account and confirm the price for each destination. An approved authentication template must be available for the language you request.

Send a code from your server

Submit the international number as digits and your own code of 4 to 10 letters or digits. Authenticate the request with your bearer token. A successful response includes a message ID for tracking.

Track delivery and verify in your app

An accepted request means the provider accepted the message. Delivery updates go to your configured callback URL. Check the code in your app. If you want to offer SMS as an alternative, initiate that flow explicitly.