> ## Documentation Index
> Fetch the complete documentation index at: https://docs.usertour.io/llms.txt
> Use this file to discover all available pages before exploring further.

# The content version object

Content versions represent different iterations of your content (flows, checklists, and launchers). A new version is automatically created when you make edits or publish content, allowing you to track changes and maintain a history of your content's evolution.

<ResponseField name="id" type="string">
  A unique identifier for the content version.
</ResponseField>

<ResponseField name="object" type="string">
  The object type identifier. Always set to "contentVersion" to distinguish it from other API objects.
</ResponseField>

<ResponseField name="number" type="integer">
  The version number of the content. Version numbers are incremental for each content object, starting from 1.
</ResponseField>

<ResponseField name="questions" type="array | null" default="null">
  A collection of [question objects](/api-reference/content-versions/the-question-model) associated with this version. This field is only populated for flow content types and can be expanded using the `?expand=questions` query parameter.
</ResponseField>

<ResponseField name="updatedAt" type="string">
  The timestamp when the version was last updated, in ISO 8601 format (YYYY-MM-DDTHH:mm:ss.sssZ).
</ResponseField>

<ResponseField name="createdAt" type="string">
  The timestamp when the version was created, in ISO 8601 format (YYYY-MM-DDTHH:mm:ss.sssZ).
</ResponseField>

<ResponseExample>
  ```json Example content version object theme={null}
  {
    "id": "cm9ja53e9005lrjlxm3zo13g8",
    "object": "contentVersion",
    "number": 1,
    "questions": [
      {
        "object": "question",
        "cvid": "llwjbkwqb7xufu2okq8gk7ud",
        "name": "How likely are you to recommend our service?",
        "type": "nps"
      },
      {
        "object": "question",
        "cvid": "e79iosim51pbvy4ikq9igh5a",
        "name": "Rate your experience",
        "type": "star-rating"
      }
    ],
    "updatedAt": "2025-04-16T01:55:42.307Z",
    "createdAt": "2025-04-16T01:55:42.307Z"
  }
  ```
</ResponseExample>