DataTable APIs can be POST or GET.
Feature documentation
Orange Logic users with a Link account can go to the <a href="https://link.orangelogic.com/CMS4/Permalinks/2P7YOHD3LX2A#TagStructure” target="_blank">Tag structure article to learn more.
Manage tags
POST or GET
/API/DataTable/v2.2/Keywords
Manage the tag hierarchy
POST or GET
/API/DataTable/v2.2/Keywords-links