Live2026APIWeb
pilotOTP — one-time-code API
BeSends
A prepaid OTP service: send a code with one call and it tries WhatsApp, then SMS, then email until one channel accepts.
Visit besends.comWhat I built
- Synchronous channel cascade: free device route first, approved authentication template next, SMS and email as fallback
- Charges only when a channel accepts; five codes per recipient per ten minutes; verify locks after five tries
- Per-account billing modes, including charging SMS credits instead of the wallet for high-volume clients
- Developer docs, cURL snippets and a per-account routing card in the panel