Prelude Verify
The CAPTCHA and SMS verification APIs designed for developers feature anti-spam mechanisms and AI-powered intelligent routing systems.
Introduction
OTP & SMS verification API for developers with anti-spam and AI-powered routing.
What is a Prelude?
Prelude is a platform that offers APIs for CAPTCHA and SMS verification, specifically designed for developers. It provides phone verification services on a global scale, enabling users to achieve rapid growth at the best possible cost, with the highest delivery rates and without any unnecessary spam messages. Prelude’s APIs include anti-spam features and AI-powered routing capabilities across more than 30 different operators, ensuring efficient and reliable message delivery. These tools help improve user registration metrics, reduce costs, increase the success rate of verification processes, and prevent fraudulent activities.
How to use Prelude?
Developers can integrate Prelude’s API into their applications by utilizing well-documented endpoints and multi-language SDKs. The API handles routing and fallback mechanisms automatically, ensuring that messages are delivered successfully and users complete the desired actions. Users can monitor key metrics in real time through an intuitive dashboard.
The core functions of Prelude
CAPTCHA and SMS verification APIs
Anti-fraud Protection
Multiple routes are used among more than 30 operators.
Real-time analysis
Automatic registration
Concise APIs and multi-language SDKs
Dedicated customer support
Anti-fraud Protection
Multiple routes are used among more than 30 operators.
Real-time analysis
Automatic registration
Concise APIs and multi-language SDKs
Dedicated customer support
Visits：21
Updated：2026-11-07
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