SMS Verify API - Overview

Telesign SMS Verify API delivers phone-based verification and multi-factor authentication (MFA) using a limited duration, one-time passcode (OTP) sent over SMS.

Common use cases

• Multi-factor authentication (MFA) - Send an OTP to a user's phone number, to complete a sign in process after they have entered their password.
• Password reset - Send an OTP to a user's phone number to verify their identity before they reset their account password.
• Phone number verification - Send an OTP to a phone number provided by a user to verify their ownership of the number.
• Account update:- Send an OTP to a user's phone number to validate critical interactions such as high-value transactions, account updates, and money transfers.

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NOTE:

To send SMS messages for other purposes besides delivering verification codes, use Telesign SMS, not this product.

General requirements

• Resource: rest-ww.telesign.com/v1/verify/sms
• Protocols: https
• Authentication: Basic (easiest to implement) or Digest
• Encoding: Accepts only UTF-8 unicode characters as inputs.
• Accepts: application/x-www-form-urlencoded
• Responds with: application/json
• Required headers: Content-Type - application/x-www-form-urlencoded

Documentation by category

• Reference:

  • Send SMS verification code
  • Get transaction status
  • Report completion
  • SMS Verify API - SMPP TLVs - Lists and describes inputs for our SMPP service that are specific to SMS Verify. For a full explanation of using SMPP with Telesign, first read SMPP protocol.

• Docs:

  • SMS Verify API - Get started
  • SMS Verify API - Try it without code
  • SMS Verify API - Tutorial: Send one-time passcode with Telesign Python SDK
  • SMS Verify API - Tutorial: Send one-time passcode with Telesign Node.js SDK
  • SMS Verify API - Tutorial: Send one-time passcode with Telesign Ruby SDK
  • SMS Verify API - Tutorial: Send one-time passcode with Telesign C# SDK
  • SMS Verify API - Tutorial: Send one-time passcode with Telesign Java SDK
  • SMS Verify API - Tutorial: Perform one-time passcode (OTP) verification in Python using a Telesign REST API
  • SMS Verify API - Tutorial: Send one-time passcode with Telesign PHP SDK
  • SMS Verify API - Tutorial: Implement PSD2 SCA for payments in Python
  • SMS Verify API - Supported languages
  • SMS Verify API - Verify with your own code
  • SMS Verify API - Verify with Telesign code
  • SMS Verify API - Implement PSD2 compliance for payments
  • SMS Verify API - Screen recipients using Verify Plus
  • SMS Verify API - Screen recipients by SIM swap indicator
  • SMS Verify API - Callback service
  • SMS Verify API - Which method should I use to get delivery status?

• Additional docs:

  • Understand SMS encoding, character limits, and splitting

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NOTE:

An SMPP implementation may be better for you than using the REST API if you need extremely high throughput, but the integration requires a higher level of technical expertise and may take longer.