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Quickly verify users via SMS OTPs

SMS Verify makes it simple to send one-time passcodes (OTPs) to your users. Make a request with the end user’s phone number, and we take care of the rest.  Sign up for a free trial account to get started. 


curl -u "ABC1DE23-A12B-1234-56AB-AB1234567890":$API_KEY \
     --url https://rest-ww.telesign.com/v1/verify/sms \
     --header 'accept: application/x-www-form-urlencoded' \
     --header 'content-type: application/x-www-form-urlencoded' \
     --data phone_number="11234567890"

Security you can count on 

Make sure your customers and platform are safe and secure with easy to implement one-time passcodes (OTPs) and multi-factor authentication (MFA).

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Prevent fake users 

Validate and authenticate legitimate users and prevent fraud–from sign-up to log out. 

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Protect account access 

Confirm user identity by adding an extra layer of security to an account. 

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Save time and resources 

Use autogenerated OTPs for easy deployment. 

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