SimSmsBox An SMS platform API is usually: auth → order by service + country → poll/webhook for SMS → cancel or swap on timeout. Automate only after one manual success with the same parameters.
What the API typically exposes
| Capability | Purpose |
|---|---|
| Balance / pricing | Confirm funds before order |
| Order number | Service + country |
| Get SMS | Poll or callback |
| Cancel / reuse rules | Free the line when OTP never arrives |
Suggested integration order
- Complete one manual receive for your target app.
- Reuse the same service/country via API.
- Enter national digits only (no double country code).
- Poll; on timeout cancel and swap — don’t spin resend forever.
- Measure delivery rate before raising concurrency.
Dev notes
- Service IDs must match the web UI.
- Prefer no-charge / cancel when SMS fails.
- Keep API keys server-side.
- Watch app-side rate limits on your IP/device.
Basics: How to use an SMS platform.
Wrap-up
The API is the web flow, scripted. Validate small, then scale.