Overview
Send OTP messages, collect COD answers, and receive signed webhook events.
Use the public REST API from your backend to deliver your codes and request cash-on-delivery confirmations. HTTP 202 accepts a send; read its current state or receive an outcome webhook.
Base URL
https://api.watification.com/api/v1Authentication
Send Authorization: Bearer <API key> with every API request. Keys use wtf_<publicId>_<secret> and identify the workspace. Keep them on your server. Outbound webhooks use a signing secret instead of your API key.
Read authentication and rate limits and errors before integrating. Every error below uses the shared Problem Details shape; each operation lists its own codes.