Overview of Prelude: OTP & SMS Verification API for Developers

Prelude is a robust SMS and OTP (One-Time Password) verification API designed to cater to developers and businesses seeking efficient and reliable user authentication solutions. The service emphasizes cost-effectiveness, high deliverability, and spam prevention, making it a suitable choice for various applications across global markets.

Key Features

Global Reach: Prelude supports sending verification messages to over 230 countries, utilizing multiple channels such as SMS, WhatsApp, Viber, and Zalo, depending on regional preferences.
Multi-Routing Capability: The API automatically selects the best route for message delivery at the lowest cost by leveraging traffic volume across 30+ providers. If a route is blocked, the service automatically falls back to the next best option.
Fraud Prevention: Prelude offers advanced anti-fraud measures, including four layers of protection and AI models to detect and block spam, ensuring that SMS costs are spent on genuine user interactions.
Cost Efficiency: The service promises a 60% reduction in costs with features like less attempts per authentication and no mark-up on SMS prices.
High Success Rates: With a 95% successful verification rate, Prelude boosts OTP conversions by ensuring high deliverability with no downtime.
Ease of Integration: Developers can integrate Prelude into their systems quickly using simple API endpoints, supported by multi-language SDKs.
Real-Time Analytics: Users can track important metrics like conversion rates, average price, and time to convert through transparent, real-time data visualizations.
Customer Support: Dedicated support is available via Slack or email, providing assistance tailored to user needs.

Use Cases

C-Level Executives: Enhance security and user trust by ensuring that only real users access platforms, while also reducing user authentication costs.
Developers: Benefit from a well-documented API and robust infrastructure that supports high volumes and peak loads, along with detailed reports to optimize delivery rates.
Heads of Departments: Improve user experience with fast, reliable verifications and reduce workload for product teams by utilizing real-time performance monitoring.
Startups and Scale-ups: Start with minimal setup and scale verification processes efficiently, adapting to increasing volumes and market expansions.
Enterprises: Manage high-volume verifications with tailored solutions and dedicated support, ensuring seamless operations.

Pricing

Prelude offers competitive pricing with detailed rates available for different markets including the US, France, UK, Japan, and Germany. Potential users can start with a free trial, and there are no hidden costs, ensuring transparency.

Getting Started

Developers can begin integrating Prelude with just a few lines of code:

curl -s 'https://api.prelude.dev/v2/verification' \
  --header 'Authorization: Bearer <YOUR_TOKEN>' \
  --header 'Content-Type: application/json' \
  --data '{"target":{"type":"phone_number","value":"<YOUR_PHONE_NUMBER>"}}'

For more detailed documentation and to explore further features, users are encouraged to visit the official Prelude website.

In summary, Prelude offers a comprehensive, secure, and efficient SMS and OTP verification service that is designed to meet the needs of modern businesses and developers, facilitating better user authentication practices worldwide.