> For the complete documentation index, see [llms.txt](https://docs.oneroute.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.oneroute.io/oneotp-api/getting-started.md).

# Getting Started

OneOTP is an API that enables you to send One-Time Passwords via SMS, Whatsapp, Email, and USSD to your customers. This can be used for phone number/email verification during sign-up / onboarding, password resets, and securing transactions.