Hi, it is expected that the reports are listed by date. Here the report has no dimension (only main metrics). A report with dimension is sorted but does sort each dataTable within a date... https://demo.piwik.org/?module=API&method=Actions.getPageUrls&idSite=7&period=month&date=last30&format=json&token_auth=anonymous&filter_sort_column=nb_visits&filter_sort_order=desc

So basically the sorting is applied to data of each individual day and because VisitsSummary.get has no multiple rows, there is nothing sorted.

Applying the sort filter to the dates for reports without a dimension won't be a solution since we need consistent sorting behaviour for reports with and without a dimension. It would be a new feature to make this sortable and would need a new API parameter