ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Core Namespace / Project Class / Tags Property

Tags Property (Project)
Gets a comma-separated list of tags that describe the item. Derived from Tags defined in the item's metdata.
Syntax
public string Tags {get;}
Remarks
Tags are stored individually, but are assembled into a comma-separated list.
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.3 or higher.
See Also