The Ultimate WhatsApp OTP API

Stop losing users to delayed SMS messages. Authenticate your users instantly with WhatsApp OTPs delivered over Meta's global infrastructure. Faster, safer, and more reliable than legacy SMS and other OTP providers.

Start Sending Free OTPs Read the Docs

Why OTP Edge out-performs competitors

The Old Way (SMS / AuthKey)

? Vulnerable to SIM-swapping attacks.
? Relies on fragmented local telecom networks, causing huge delays internationally.
? Unpredictable pricing that spikes for different countries.
? Often requires complex template approvals for basic auth.

The OTP Edge Way

End-to-end encrypted delivery directly to the WhatsApp app.
Sub-100ms dispatch time using our global edge runtime.
Bring Your Own WABA (WhatsApp Business Account) for zero-markup usage costs.
Fully managed session handling and stateless JWT issuance.

Enterprise-Grade Infrastructure

Zero Cold Starts

Vercel Edge functions ensure your OTP dispatch API is always hot and responds instantly.

Global Deliverability

Because it's WhatsApp, you get 99.9% global delivery rates without worrying about carrier filtering.

Beyond Authentication

Once authenticated, use the same API connection to send PDF invoices and marketing alerts.

Use Cases of WhatsApp OTP

Protect your users across their entire journey with instant, end-to-end encrypted authentication.

User Login & Signup

Send OTPs instantly via WhatsApp for secure logins and new signups. Verify phone numbers natively.

Password Resets

Deliver time-sensitive codes instantly to verify genuine password reset requests and block takeovers.

Transaction Confirmations

Protect payments by instantly verifying transactions and stopping unauthorized financial activity.

Two-Factor Authentication

Add a robust second layer of security by using WhatsApp as your primary 2FA channel.

Restricted Content

Authenticate users before granting access to premium content, confidential documents, or sensitive data.

Booking Confirmations

Verify user identity before finalizing appointments or reservations to drastically reduce spam.

Integrate in Minutes

Swap out your legacy SMS provider for our WhatsApp API in just three lines of code. SDKs available for Node, Python, PHP, and Go.

View Full Documentation ➔

send-otp.ts

const response = await fetch("https://api.otpedge.com/v1/send", {
  method: "POST",
  headers: { "Authorization": "Bearer YOUR_API_KEY" },
  body: JSON.stringify({
    to: "+1234567890",
    channel: "whatsapp"
  })
});

Why OTP Edge out-performs competitors

The Old Way (SMS / AuthKey)

? Vulnerable to SIM-swapping attacks.
? Relies on fragmented local telecom networks, causing huge delays internationally.
? Unpredictable pricing that spikes for different countries.
? Often requires complex template approvals for basic auth.

The OTP Edge Way

End-to-end encrypted delivery directly to the WhatsApp app.
Sub-100ms dispatch time using our global edge runtime.
Bring Your Own WABA (WhatsApp Business Account) for zero-markup usage costs.
Fully managed session handling and stateless JWT issuance.

const response = await fetch("https://api.otpedge.com/v1/send", { method: "POST", headers: { "Authorization": "Bearer YOUR_API_KEY" }, body: JSON.stringify({ to: "+1234567890", channel: "whatsapp" }) });