Add WhatsApp OTP phone verification to Shopify
You can verify Shopify customers' phone numbers with a WhatsApp code by calling the WAppOTP API from a Shopify app backend or App Proxy route. WAppOTP provides the integration guide and example code; the secret API key always stays on your server.
Shopify stores that sell cash on delivery or ship locally lose money on unreachable customers. A WhatsApp OTP step confirms the phone before you ship, and the same WAppOTP project can send shipping and delivery updates.
Today the Shopify integration is a developer guide with example code for a custom Shopify app (built on Shopify's React Router app template), not a one-click App Store listing.
Updated
How the flow works
- The customer enters a phone number in your storefront.
- The storefront calls your Shopify app backend (or an App Proxy route).
- Your backend calls POST /v1/otp/send with the WAppOTP project key and keeps only the verificationId in the session.
- The customer types the code; your backend calls POST /v1/otp/verify.
- When valid is true, your app marks the order or account as phone-verified.
Backend example (Node.js)
import { WhatsAppOtpClient } from "@whatsappotp/sdk";
const whatsapp = new WhatsAppOtpClient({
baseUrl: process.env.WHATSAPPOTP_API_URL,
apiKey: process.env.WHATSAPPOTP_API_KEY
});
const sent = await whatsapp.sendOtp({ to: "+639171234567" });
const checked = await whatsapp.verifyOtp({
verificationId: sent.verificationId,
code: codeFromCustomer
});Keep the key secret
- Never put a WAppOTP secret key in Liquid, theme JavaScript, Checkout UI extensions or storefront code.
- Call the API only from your app backend or an App Proxy route.
- Store only the verificationId in the browser session.
Send order updates on WhatsApp
Save a message template such as "Hi {{name}}, your order {{order}} has shipped" and send it with one API call when an order is fulfilled. Long tracking links can be shortened automatically with the URL shortener add-on.
Frequently asked questions
Is there a one-click Shopify app?
Not yet. The integration is a guide with example code for your own Shopify app backend. WooCommerce has a ready-made WordPress plugin.
Do I need the WhatsApp Business API for Shopify?
No. WAppOTP uses the WhatsApp number you link by QR, so there is no Meta onboarding.
Can I send shipping updates too?
Yes. Use POST /v1/messages with text or a saved template, with delivery and read status for every message.
Start sending in minutes
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