Using the selection view feature might be helpful to the problem on hand. I would suggest to try with the following steps outlined:
* With a last updated field in the view, defne a new selection view with view parameters that allows the view to identify the newly inserted records. Check out the [Creating Selections Views - Parameters of Derived Views](https://community.denodo.com/docs/html/browse/latest/en/vdp/administration/creating_derived_views/creating_selection_views/creating_selection_views#parameters-of-derived-views) page for details on configuring this selection view.
* Publish this new selection view as an [API](https://community.denodo.com/docs/html/browse/8.0/en/vdp/administration/publication_of_web_services/publication_of_web_services) so that the new rows can be POSTed to the third party endpoint.
Hope this helps!