WhatsApp OTP Authentication — Secure Two-Factor Verification via REST API

Replace expensive SMS OTPs with WhatsApp-based one-time passwords. Secure, faster delivery, and cost-effective for web and mobile apps.

Key Benefits

Generate 4-6 digit codes with automatic expiration for maximum security.

Validate OTP submissions in real-time with webhook callbacks.

Codes expire after 5–10 minutes. Set your own expiration window.

Built-in protection against brute-force attacks.

Send OTP during sign-up to verify phone numbers instantly.

Verify identity during password reset or account recovery flows.

Add an extra security layer for payment and transaction confirmations.

Verify API key requests and third-party integrations with 2FA.

Full API reference with code examples in Python, Node.js, and cURL.

Step-by-step implementation guide for this use case.

Start building with the WhatsApp Messaging API. Free tier with no credit card required.