Lightning Fast
OTPs generated and delivered in milliseconds. No delays, no excuses.
Onexotp delivers blazing-fast OTP authentication for your applications. Self-hosted, fully private, and built for developers who care about security.
From generation to delivery to verification — Onexotp handles the full OTP lifecycle so you don't have to.
OTPs generated and delivered in milliseconds. No delays, no excuses.
Self-hosted on your own infrastructure. Your data never leaves your server.
Deliver OTPs via SMS, Email, WhatsApp, or Telegram — your choice.
Beautiful in any environment — fully supports dark and light themes.
Built-in rate limiting and attempt tracking to stop abuse at the edge.
Full-featured control panel to manage users, settings, and analytics.
Dead-simple JSON API. Integrate OTP auth into any stack in minutes.
Track delivery rates, success ratios, and usage trends at a glance.
No complex SDKs or vendor lock-in. A clean REST API you can call from anywhere.
Your app calls the OneXOTP API with a user identifier. We generate a cryptographically secure code and queue it for delivery.
The OTP is dispatched via your preferred channel — SMS, Email, or messaging — and reaches the user in seconds.
The user submits the code. OneXOTP verifies it server-side with expiry and attempt checks. Access granted.
Integrate Onexotp in minutes with our clean REST API. Send, verify, and manage OTPs with a few lines of code.
// 1. Request an OTPconst res = await fetch('https://onexotp.com/api/auth/send-otp', { method: "'POST'", headers: { "'Content-Type'": "'application/json'" }, body: JSON.stringify({ phone: "'+62812xxx'" }),});// 2. Verify the codeconst ok = await fetch('https://onexotp.com/api/auth/verify-otp', { method: "'POST'", body: JSON.stringify({ phone: "'+62812xxx'", code: "'123456'" }),});Join the private beta and experience OTP authentication that's fast, private, and production-ready.