Introduction
TheSMSBuddy RCS API provides a seamless way to send Rich Communication Services (RCS) messages to your customers. RCS is an evolution of traditional SMS, enabling rich media content including images, videos, interactive buttons, and carousel cards.
Important change: RCS messages must now be sent using a template that has been approved in
advance. Message content can no longer be composed inside the API request. Every call to
/api/v1/rcs/send must carry a templateId, and requests without one are rejected.
If you integrated before this change, see Migrating from the old API.
In practice this means the work splits in two. You build and submit your content once, from the Templates screen in your panel, and wait for it to be approved. After that your application sends the approved template's ID plus the values that change per message.
Base URL:
https://thesmsbuddy.com/api/v1/rcs/