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Verify API
Use a single API with ready-made logic to build and test PIN generation, delivery and failover for more intelligent onboarding and authentication.![API Developer Center Code View Screen grab of the API Developer Center showing code that can be copied for use.](/cdn-cgi/image/fit=contain,width=620,f=auto,onerror=redirect/content/dam/vonage/us-en/api/imagery/API-dashboard-2.png)
Get smarter fail-safe, reliable delivery and tailor-made messaging.
Intelligent failover
Resend PIN codes via voice (TTS) to customers automatically through one API request without additional code. Learn moreAdaptive Routing™
Ensure optimum delivery by rerouting messages proactively around congestion — like GPS for your SMS.Flexible implementation
Choose from three Verify models: Verify Success, Verify Request or Verify Conversion.Verify Success
Our full-service, per-conversion only model allows you to start authenticating phone numbers across the globe with just a few lines of code. Verify manages the PIN code with auto-failover to additional channels when needed.Verify Request
Our per-request model allows our customers to manage their PIN code and customise the failover sequence to additional channels.Community
![API Developer Center Code View Screen grab of the API Developer Center showing code that can be copied for use.](/content/dam/vonage/us-en/api/imagery/API-dashboard-promo.png)