If we can get the count of comments & attachments of the article, then developers could save 2 extra API call to fetch comments & attachments detail. To avoid too much HTTP code 429.
article: https://developer.zendesk.com/api-reference/help_center/help-center-api/articles/#list-articles
comments: https://developer.zendesk.com/api-reference/help_center/help-center-api/article_comments/
attachments: https://developer.zendesk.com/api-reference/help_center/help-center-api/article_attachments/