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Twilio Verify API

Simplify authentication at scale with Verify API

New Feature

Validate users over SMS and other popular channels—including new Silent Network Authentication—with a full-managed API that does the heavy lifting for you.

User receiveing code to his phone to unlock his laptop

A multi-channel user verification solution
in one turnkey API

Add seamless two-factor authentication to your onboarding and login flow with a single API that does the work of a full one-time password (OTP) delivery solution.

illustration of how Silent Network Authentication can validate your credentials
New Feature

Introducing Silent Network Authentication

Now you can confirm phone number possession without interrupting the user flow. Protect end users, accounts, and transactions with secure authentication that doesn’t require users to wait or leave your app.

How Silent Network Authentication makes onboarding painless

Reduce fraud at scale
without the workload


Build with out-of-the-box convenience

Quickly integrate a ready-use solution that handles all your connectivity, channels, code generation, fraud monitoring, and more using native software—so you don’t have to.

Mitigate fraud seamlessly

Reduce fraud across your multi-channel user experience with phone number verification that uses one API endpoint to validate users and detect fraud with minimal friction.

Optimize OTP conversions

Ensure global deliverability via preferred channels like SMS, voice, email, Silent Network Auth, WhatsApp, push, silent device approval, and time-based one-time password (TOTP).

Use cases

Seamless user authentication
for your whole customer journey

Verify providing secure user experience

Onboarding and signup

Offer a seamless, secure experience across channels that prevents fake account creation and drives conversions.

Verify identifiying your logging credentials

Logging in

Protect your authentication flows to prevent account takeovers, and bolster end-user trust and loyalty.

Verify securing all the trasactions that are made


Protect high-value transactions and purchases to reduce payments fraud globally.

Verify validating password resets

Managing accounts

Validate password resets, device changes, user reactivation, and other account changes to boost retention.

Verify confirming that your number is the right one

Confirming number and email owners

Confirm possession of phone numbers and emails to ensure reliable end-user communication at scale.

Verify preventing fraud

Preventing fraud with Fraud Guard

Block fraud by detecting artificially-inflated SMS traffic with automated, built-in fraud detection tools.


A simple solution to
passwordless verification at scale

Illustration of Twilio code helping scale globally


Skip the challenges of scaling with an API that validates over 3.5 billion users per year—including for Black Friday and the Super Bowl.

  • Send personalized messages globally using a certified pool of high-capacity numbers pre-provisioned for Verify API.
  • Improve delivery rates with carrier-approved messages templates that automatically translate across 42 languages.
  • Optimize customer experience, conversions, and security using built-in tools for compliance, analytics, and reporting.

Explore Verify API docs

Illustration of Twilio helping on making your product safer


Mitigate fraud at any scale with native anti-fraud tools and insights backed by the peerless protection of the Twilio Super Network.

  • Prevent SMS fraud with Fraud Guard—automatic traffic monitoring that detects and blocks suspected fraud.
  • Customize rate limits, geo-permissions, and other fraud controls in your Twilio Console dashboard.
  • Enhance security and user insights with up-to-date phone data intelligence from Twilio’s Lookup API.

Explore the Lookup API

Illustration of a Verify integration into your app with its APIs


Easily integrate Verify into your app with its developer-first APIs and client libraries for a quick and confident deployment.

  • Implement in as little as one sprint using sample code and best practice tutorials.
  • Customize code generation, message templates, sender IDs, and more.
  • Monitor delivery rates, conversions, and latency via Twilio Console and APIs.

Explore Code Exchange quick deploy

illustration of how Authy can validate your credentials

Offer users a convenient security experience with Twilio Authy

Simplify your users’ verification process with the top consumer authentication app, Twilio Authy. Works with Verify API to support multi-device syncing, cloud backups, and fast account recovery across channels, including push and TOTP.

Download for Android, iOS, and desktop.


Twilio Verify greatly reduces our own support costs, over other verification methods. It’s a no brainer ... having Twilio as the backend for our authentication just allows us to keep growing without any concern

Suhas Joshi, Engineering Manager,

With Twilio Verify, our customers reach the next level of protection for their financial transactions, with a frictionless user experience.

Dominic Heyden, Cofounder and CTO,

Integration [with Verify API] was extremely fast, it was a nice surprise. We aren’t used to being able to integrate with a third party so easily.

Pablo Abad, Head of Site Security,