OTP over SMS is the global standard for login, checkout, and password reset. SplitSMS exposes send and verify endpoints so your backend confirms codes without managing carrier relationships — sandbox keys let you test for free before production.
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OTP SMS API — Verification Codes That Deliver
Send and verify OTP SMS in Ghana and 190+ countries. REST API, sandbox testing, webhooks, and transparent pricing — ship login and payment verification fast.
OTP API endpoints
Create API keys with sms.send permission, POST to send a one-time code, and verify the user input on your server. Delivery webhooks notify you when messages succeed or fail — signed with HMAC for security.
Ghana and international OTP
Deliver OTP to Ghana (+233), Nigeria, Kenya, and 190+ countries. Normalize local formats (024, 054) before send. Same wallet powers OTP and bulk campaigns.
Frequently asked questions
- How do I send OTP SMS with SplitSMS?
- Sign up, create an API key, use the REST send endpoint with your message template or OTP helper, and verify codes via the verify endpoint. Full reference at splitsms.com/api-docs.
- Can I test OTP without charges?
- Yes. Sandbox API keys let you integrate and test OTP flows without debiting your wallet. Switch to production keys when ready.