REST API for OTP Delivery
A simple REST endpoint: send a phone number, get the OTP delivered to the customer on WhatsApp — ready to integrate in minutes.
Communication Hub — OTP
Deliver verification codes through WhatsApp
Send one-time passwords to customers on WhatsApp using a simple REST API — where messages are read immediately, not ignored in an SMS inbox.
Problems it solves
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SMS OTP delivery fails in areas with poor mobile network coverage, blocking users from completing verification.
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SMS is increasingly filtered as spam, causing OTP messages to never arrive.
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Building and maintaining OTP delivery infrastructure from scratch consumes significant engineering time.
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Developers need an OTP API that works immediately without lengthy approval processes.
Key capabilities
WhatsApp Native Delivery
OTP messages are delivered as official WhatsApp messages — higher open rates and faster customer response than SMS.
Authentication Templates
Uses Meta's dedicated Authentication template category, designed specifically for OTP and verification flows with a built-in copy button.
Delivery Status Callbacks
Get real-time webhook callbacks for sent, delivered, and read status — know exactly when the customer received their code.
Rate Limiting & Fraud Controls
Built-in per-number rate limiting prevents OTP flooding attacks and protects your WhatsApp sender reputation.
Developer Documentation
Full API reference with request/response examples available at /developer/api/otp — no account required to read the docs.
Availability: Available as part of the Communication Hub add-on through Build Your Package.