Support
| Channel | Contact |
|---|---|
| support@otp.kztusdt.kz | |
| Cabinet | https://cascade.kz/cabinet — balance, keys, send history |
Write with your company number (account phone) and a description of the task: integration, payments, OTP delivery.
Main links
| Resource | URL |
|---|---|
| Site | https://cascade.kz |
| Cabinet | https://cascade.kz/cabinet |
| API | https://cascade.kz/api |
| OpenAPI | https://cascade.kz/openapi.yaml |
| Documentation | /docs |
| Pricing | /pricing |
| FAQ | /faq |
| Status | /status |
How to get integration help
- Open API and the send/verify sections.
- Check common errors and limits.
- Cross-check FAQ and SDK examples.
- Make sure the channel is enabled in the cabinet (“Where to send from”) and the balance is sufficient.
- If that did not help — write to support@otp.kztusdt.kz.
Legal pages
See the public site pages: terms of use and privacy policy (in the footer).
Important about the product
Cascade is outbound OTP delivery to the user's real phone. It is not virtual number rental. If you were looking for a disposable SIM marketplace — see the comparison.