OTP SMS API: Ship Verification in Minutes
Send and verify one-time passwords with SplitSMS REST API — sandbox testing, webhooks, and production-ready security.
Every login flow, checkout, and password reset needs reliable OTP delivery. SplitSMS exposes send and verify endpoints so you can integrate SMS verification without managing carrier relationships yourself.
Why OTP over SMS
SMS OTP is the global standard for two-factor authentication. Users already expect a six-digit code on their phone. With SplitSMS, you get fast delivery across Ghana and 190+ countries through multi-carrier routing.
Developer experience
Create API keys from your dashboard, test in sandbox mode without charges, and promote to production when ready. Delivery webhooks notify your backend when messages succeed or fail — signed with HMAC for security.
Beyond OTP
The same API powers bulk campaigns, balance checks, and contact management. One wallet, one set of keys, full delivery logs. Sign up for 5 free SMS credits and ship your first verification flow this week.
Try SplitSMS free
Send bulk SMS, OTP, and campaigns — 5 free credits on signup.