Integrate an OTP SMS API step by step: architecture, send/verify, error handling, abuse protection, testing. Code examples and a production checklist.
OTP API Integration Guide: SMS Verification for Developers (2026) Read More »
You’ve wired up the Arkesel OTP API endpoint. You fire off your first request. Instead of a delivered OTP, you get this: { "code": "1004", "message": "SMS gateway not active or credential not found" } Now what? This OTP API integration troubleshooting guide maps every Arkesel OTP API error code to its root cause, shows
OTP API Errors: 10 Common Issues and How to Fix Them (2026) Read More »
OTP vs 2FA: an OTP is one possible second factor; 2FA is the broader method requiring two factors. See how they relate and how to deliver an OTP reliably.
Two-Factor Authentication: The Answer to Better Security Read More »
