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Cascade Cascade
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Company

About Cascade

Cascade is an API for delivering OTP and short links to the customer's phone.

Quick Answer

Cascade is an outbound delivery service for OTP and short links to the user's real phone via WhatsApp, Telegram and SMS over API.

Summary

Cascade sends verification codes and short links to a real number via WhatsApp, Telegram or SMS. A service for businesses and developers, not a virtual-number marketplace.

Key Takeaways

  • Delivery to the user's real phone, not rental of disposable numbers.
  • Channels: WhatsApp, Telegram, SMS; API base URL https://cascade.kz/api.
  • Start in ~3 minutes: API key in the cabinet, Bearer auth, POST /otp/send and /otp/verify.

Related Questions

Contents

  1. Who we are
  2. What the product can do
  3. Who it is for
  4. Pricing (marketing)
  5. Security and approach
  6. Contacts and status

Who we are

Cascade (domain cascade.kz) is a platform for outbound delivery of one-time codes (OTP) and short links. The code goes to the user's real phone via WhatsApp, Telegram or SMS — the same way you expect from a modern verification channel in a product.

We do not rent virtual numbers and are not an analogue of SMS-Activate / 5sim / OnlineSIM. If you need a disposable number “to register anywhere” — that is a different class of service. Cascade solves your application's problem: send a code or link to your customer.

What the product can do

  • Send OTP: POST /api/otp/send
  • Verify code: POST /api/otp/verify
  • WhatsApp group notifications: POST /api/group/send
  • Short links: POST /api/links/shorten and POST /api/links/send
  • Channels: whatsapp | telegram | sms (or the company default channel)
  • Auth: Bearer token from the company cabinet (API keys)

Details are in the documentation, API and comparison with number marketplaces.

Who it is for

Developers, SaaS, e-commerce, automation and QA teams — anywhere you need fast phone verification without your own SMS infrastructure. See use cases and FAQ.

Pricing (marketing)

Market orientation: from 1 ₸, setup in about 3 minutes. In billing: WhatsApp and Telegram are usually 1 token per successful delivery, SMS — 16 tokens (see current figures in the cabinet and on the pricing page).

Security and approach

Store the API key only on the backend. Do not call the API from the browser. Do not log OTP codes and tokens in plain text. These are basic rules from the integration guide.

Contacts and status

Documentation API Pricing FAQ