OTP flows on programmable SMS routing: a FastAPI implementation

📰 Dev.to · BridgeXAPI

Learn to implement OTP flows using programmable SMS routing with FastAPI, a crucial security feature for many applications

intermediate Published 30 Mar 2026
Action Steps
  1. Generate a random OTP code using a library like secrets
  2. Store the OTP code in a secure database or cache layer
  3. Configure programmable SMS routing using a service like Twilio or Nexmo
  4. Send the OTP code to the user's phone number using the configured SMS routing
  5. Implement an endpoint to verify the user's OTP input using FastAPI
Who Needs to Know This

Backend developers and DevOps engineers can benefit from this implementation to enhance application security and user authentication

Key Insight

💡 Programmable SMS routing with FastAPI enables robust and scalable OTP flows for enhanced application security

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🔒 Implement secure OTP flows with programmable SMS routing using FastAPI! 💻

Full Article

Most OTP examples stop too early. They show how to generate a code, store it somewhere, and send an...
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