The /articles endpoint groups articles with similar headlines together in its response. This is its default behaviour.
You can choose not to group articles together in this way by setting
false. When you do this, all articles will appear as independent entries in the API response.
If a publisher has several articles with the same headline that match your search query, if
true, or you haven't specified the field at all, then only the article from that publisher that best matches your search query will be returned in the API response.
Updated over 3 years ago