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The flow is made of two steps, the OTP generation and the OTP validation.

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OTP Configuration

The desired character size and expiration time of the generated one-time-passwords can also be configured using the following environment variables:
  • FLOWX_OTP_LENGTH — number of digits in the generated code. Default: 4
  • FLOWX_OTP_EXPIRETIMEINSECONDS — how long the OTP stays valid, in seconds. Default: 6000
Let’s go through the examples for both steps:

Generate OTP

Validate OTP

Last modified on June 9, 2026