> ## Documentation Index
> Fetch the complete documentation index at: https://developers.telnyx.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Telnyx Verify API

> Use the Telnyx Verify API to add carrier-grade two-factor authentication via SMS, voice, and WhatsApp one-time passwords (OTPs).

The Telnyx Verify API enables you to implement robust security features using carrier-grade voice and messaging to keep your customers safe.