What is OTP API?
The OTP (One-Time Password) API provides secure authentication and verification capabilities for your applications. Use OTP codes to verify user identities, secure transactions, enable two-factor authentication (2FA), and protect sensitive operations. Our API delivers OTP codes via SMS with high reliability and fast delivery times.
How It Works
The OTP API generates and delivers time-limited, single-use verification codes:
OTP Generation
- Automatic generation: Secure, randomly generated codes
- Configurable length: Choose between 4-8 digit codes
- Expiration time: Set custom expiration periods (default: 5 minutes)
- One-time use: Codes are automatically invalidated after use
OTP Delivery
- SMS delivery: Codes are sent via SMS to the user's phone number
- Fast delivery: Average delivery time under 3 seconds
- Global reach: Send OTP codes to phone numbers worldwide
- Delivery confirmation: Track delivery status for each OTP
OTP Verification
- Secure validation: Verify codes server-side for maximum security
- Rate limiting: Built-in protection against brute force attacks
- Usage tracking: Monitor OTP generation and verification attempts
- Automatic cleanup: Expired codes are automatically removed
Key Features
High Security
Cryptographically secure random number generation, time-limited codes, and one-time use enforcement for maximum security.
Fast Delivery
Average delivery time under 3 seconds with 99%+ delivery rate, ensuring users receive codes quickly and reliably.
Flexible Configuration
Customize code length (4-8 digits), expiration time, and message templates to fit your application's needs.
Rate Limiting
Built-in protection against abuse with configurable rate limits for OTP generation and verification attempts.
Use Cases
Perfect for user registration, login verification, password reset, transaction confirmation, and two-factor authentication.
Analytics & Monitoring
Track OTP generation rates, delivery success, verification attempts, and identify potential security issues.
Common Use Cases
User Registration
Verify phone numbers during account creation to ensure valid contact information and reduce fake accounts.
Login Verification
Add an extra layer of security to user logins with two-factor authentication (2FA).
Password Reset
Securely verify user identity before allowing password changes.
Transaction Confirmation
Confirm sensitive operations like payments, transfers, or account changes.
Account Recovery
Verify user identity when recovering locked or compromised accounts.
Authentication
The OTP API uses Bearer Token authentication:
- Header:
Authorization: Bearer {your_api_token} - Token: Obtain your API token from My OmaxTelecom Portal
Getting Started
To start using the OTP API:
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Get your API credentials: Log in to My OmaxTelecom Portal and navigate to your API settings to obtain your API token.
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Choose your environment:
- Sandbox: For testing and development
- Production: For live operations
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Review the API documentation: Explore all available endpoints, request/response formats, and authentication requirements.
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Implement OTP flow: Start with OTP generation, then add verification logic to your application.
Security Best Practices
- Always verify OTP codes server-side, never client-side
- Set appropriate expiration times (recommended: 5-10 minutes)
- Implement rate limiting to prevent abuse
- Log verification attempts for security monitoring
- Use HTTPS for all API requests
- Store OTP codes securely and never log them
API Documentation
Complete API Reference
Explore the full API documentation with interactive examples, request/response schemas, and authentication details.
Need Help?
If you have any questions or need assistance with the OTP API, please contact our support team at [email protected].