This REST API allows to add metadata to the documents.
With this API you can add metadata with following features:
Metadata properties could contain different types of values: string; datetime; integer; double; boolean; There are many ways to specify what property should be added. You could search for properties to add by: name (a part of name, exact phrase, regex match. All names matching is ignorecase); tag (exact tag, possible tag name)....Signature Product Solution GroupDocs...