# Cloud Transcoding Overview (/en/api-reference/api-ref/cloud-transcoding)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

Agora Cloud Transcoding transcodes media streams on Agora servers and outputs the result to an RTC channel. Send HTTPS requests from your business server to manage transcoding tasks and templates.

## API basics [#api-basics]

* **Authentication**: All APIs require [Basic Auth](authentication).
* **Request**: Request bodies use JSON.
* **Response**: Response bodies use JSON.
* **Base URL**: `https://api.sd-rtn.com`

<CalloutContainer type="info">
  <CalloutDescription>
    The Cloud Transcoding REST API supports HTTPS only. Requests over plain HTTP are not supported.
  </CalloutDescription>
</CalloutContainer>

## REST APIs [#rest-apis]

* [Acquire a builder token](acquire): Retrieve a builder token before creating a task.
* [Create a cloud transcoding task](create): Start transcoding by creating a task.
* [Query the status of a task](query): Check the status of a Cloud Transcoding task.
* [Update a cloud transcoding task](update): Update an existing task.
* [Destroy a cloud transcoding task](destroy): Destroy a Cloud Transcoding task.
* [Create or update a transcoding template](template-create): Create or update a transcoding template.
* [Query transcoding templates](template-query): Query all transcoding template configurations under an App ID.
* [Query message notification server IP](ncs-query-ip): Get message notification server IP addresses for firewall whitelisting.