How to Add SMS Verification to Your App in 5 Minutes (Python + Node.js)

SMS verification is everywhere — Telegram, WhatsApp, Google, social networks. If you're building a service that needs to verify phone numbers programmatically, you need a reliable API. In this tutorial, I'll show you how to integrate SMS verification into your app using Python and Node.js in under 5 minutes. Why Programmatic SMS Verification? Common use cases: QA & Testing — verify signup flows without burning real phone numbers Account Management — automate account creation for your SaaS platform Multi-region Testing — test with phone numbers from 100+ countries CI/CD Pipelines — automated end-to-end tests with real SMS Prerequisites You'll need an API key from SMSCodex. Sign up, go to API Access in your dashboard, and issue a key. Python Example import requests import time API_BASE = "https://smscodex.com/api/v1" API_KEY = "your_api_key_here" headers = { "Content-Type": "application/json", "X-Client-Api-Key": API_KEY, } # Step 1: Request a number response = requests.post( f"{API_