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Verify API

Create your own authentication program or build one into your existing product. Use a single phone verification API to reach users across all devices with OTP and more.

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Man receives 2FA code on mobile device
ABOUT

A two-factor authentication solution at a great price

Telnyx’s Verify API offers all the standard features of user authentication software, including OTP sent via SMS and voice as well as flash calling. It's super easy to use and, just like the rest of our platform, comes at a great price.

FEATURES

Simple two-factor authentication API

The Telnyx Verify API allows you to build your own authentication program using one easy API for SMS, voice and even flash calling.

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    Reliable authentication

    Reliable infrastructure for scalable 2FA delivery to your users in over 190 country codes.

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    Analytics

    Client based DLRs give detailed insight into how customers interact with your two-factor authentication tools.

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    Flash call

    Our API allows automatic interception of 2FA codes when customers accept an incoming flash call.

BENEFITS

Developer-friendly, scalable API

Among CPaaS providers, Telnyx consistently wins awards for its results and ease-of-use. We take care of the details as you scale, so you don’t have to.

#1

Ranked CPaaS for Results and Ease of Use

A global 2FA solution

Our Verify API can interact with your end users all around the world.

190+

Country codes supported

HOW IT WORKS
Step 1 of 4
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RESOURCES

Start verifying

Our code is your code.

curl -X POST \
  --header "Content-Type: application/json" \
  --header "Accept: application/json" \
  --header "Authorization: Bearer YOUR_API_KEY" \
  --data '{"name":"Test Profile","default_timeout_secs":300,"messaging_enabled":true}' \
  https://api.telnyx.com/v2/verify_profiles
  • Icon Resources Docs

    Build with an authentication API

    Configuration guides help you quickly add an authentication service to your app using SMS, Voice, Flash Call and/or WhatsApp.

    Explore docs
  • Icon Resources Article

    Why 2FA?

    If you're worried about protecting your sensitive and personal information, learn how two-factor authentication can help.

    Read article
  • Icon Resources Article

    What is two-factor authentication?

    We dive into how two-factor authentication works to add an extra layer of security, the different types of 2FA and more.

    Read article
PRICING

See our Verify API pricing

Customers typically save 30% by switching to Telnyx, with lower list pricing and automatic volume discounts.

Starting at:

$0.03

per verification
See pricing
SOLUTIONS

2FA for multiple applications

Sign up and start building

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FAQ

Authentication is a means of verifying one’s identity, and two-factor authentication (2FA) is a method of establishing access to an online destination by requiring users to provide two different types of information. One common mode of single-factor authentication is the username/password pair. With 2FA, users need to both provide a password and prove their identity in some other way to gain access. A common 2FA method is to send a time-sensitive one-time password to a mobile device via SMS in addition to username and password.

Authentication is a means of verifying one’s identity, and two-factor authentication (2FA) is a method of establishing access to an online destination by requiring users to provide two different types of information. One common mode of single-factor authentication is the username/password pair. With 2FA, users need to both provide a password and prove their identity in some other way to gain access. A common 2FA method is to send a time-sensitive one-time password to a mobile device via SMS in addition to username and password.

Resources, Docs, Support

Verify Api hub

Find tips, best practices, and guides for Verify Api

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    Telnyx Verify API | Telnyx

    API Documentation for Verify

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    Telnyx Verify Quickstart | Telnyx

    Telnyx Verify helps to deliver a 2FA token to any mobile number and verify that token using Telnyx V2 API

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    Account Setup | Telnyx

    Outlines the process of setting up a Telnyx account.

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    Account | Telnyx

    The Account API allows users to manage addresses and billing info associated with their account.

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    Get started now! | Telnyx

    Welcome to Telnyx! This quickstart is designed to get you started right away with creating your account and using the developer portal to do some common actions. You will:

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    Trigger SMS verification API | Telnyx

    Trigger SMS verification

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    Trigger Call verification API | Telnyx

    Trigger Call verification

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    Create a Verify profile API | Telnyx

    Creates a new Verify profile to associate verifications with.

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    List verifications by phone number API | Telnyx

    List verifications by phone number

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    Verify verification code by phone number API | Telnyx

    Verify verification code by phone number

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    Telnyx Blog | CPaas & UCaaS Resources

    Find data-driven research, comprehensive guides and all things SIP trunking, voice and SMS APIs, wireless and more.

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    How does a verify API protect your business and customers?

    Secure your business with a verify API to protect data, build trust, and ensure compliance. Learn what features to look for when choosing a verify API.

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    Telnyx Verify: Delivering 2FA at Scale

    Verify API Launch -- Empowering businesses to enable robust security features through reliable two-factor authentication.

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    2FA codes with Verify API and Python SDK

    Learn how to send 2FA codes with Verify API and Python SDK in this webinar recording

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    How to choose the best 2FA solution for fraud prevention

    We’ve compared the best 2FA fraud prevention solutions so you don’t have to. Learn about top features, pricing, and ease of use.

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    2FA vs. MFA: Which verification strategy is right for you?

    Finding the right authentication method for your business will protect sensitive data and comply with regulations. Learn how to choose between 2FA vs. MFA.

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    Ensure account integrity with reliable verification methods

    Learn how reliable verification methods like passwords and 2FA can help you maintain account integrity, enhance security, and protect your data and users.

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    Just How Secure is Two-Factor Authentication?

    So, just how secure is two-factor authentication? 2FA is one of the safest ways to protect your sensitive and personal information and users, here's how.

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    What is 2FA? Complete guide to two-factor authentication

    Learn about two-factor authentication’s role in cybersecurity, how it works, and how you can implement 2FA for your business.

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  • Article icon

    Top 5 Twilio Verify API alternatives

    Looking for the best verification API for your business? Don’t just default to Twilio Verify API. Consider some of these great options instead.

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    Top 5 Twilio Verify API alternatives

    Looking for the best verification API for your business? Don’t just default to Twilio Verify API. Consider some of these great options instead.

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    The Better Twilio Alternative - Telnyx

    Switch to Telnyx for a better Twilio alternative. Benefit from our competitive pricing, private global network, and award-winning support.

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  • Article icon

    Introducing the Verify API | Telnyx Help Center

    This article will explain how to set up Verify API to utilize within the Telnyx Portal.

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    Telnyx Verify: 2FA made easy | Telnyx Help Center

    This article describes what is and how to get started with Telnyx Verify

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    Telnyx Identity & Verification Tools | Telnyx Help Center

    A comprehensive list on how to navigate various Telnyx Identity and verification tools.

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    API Keys and How to Use Them | Telnyx Help Center

    In this article we will explain API keys and how to use them with both API v2 and API v1.

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    Getting Started | Telnyx Help Center

    Get Started with a Mission Control Account. Start building on Telnyx today.

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    Telnyx SMS Guide | Telnyx Help Center

    Here you will find a collection of links that will explain how to build applications using our SMS offering.

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    Two Factor Authentication [Use Cases]

    Implement Telnyx's Two-Factor Authentication to safeguard user data. Check out our real-world use cases.

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    SMS API | Built for CRM and Sales

    Enhance your CRM tool with our SMS API. Build customer relationships seamlessly while ensuring compliance with data and privacy restrictions.

    Read more