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otp.com is a developer-focused OTP verification service for adding one-time password authentication to websites, mobile apps, SaaS platforms, and online services. It provides a unified API for sending and verifying verification codes through SMS, WhatsApp, Telegram, and email, allowing applications to support phone number and email verification without maintaining separate integrations for each communication channel. (otp.com)
The platform supports REST API integration, official SDKs for Node.js, Python, Go, and PHP, MCP server connectivity, and no-code workflows through tools such as n8n and Make. Developers can send OTP codes, verify user-submitted codes, resend messages, and check delivery status. Account-based routing can select the appropriate channel and use fallback options when needed, while delivery receipts and verification status are managed through the API. otp.com is designed for user registration, login authentication, account recovery, transaction confirmation, and other two-factor authentication workflows requiring secure, automated identity verification. (otp.com)
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