There are several ways to install ClipCoverage.

Direct Google Workspace Marketplace link:

ClipCoverage - Google Workspace Marketplace
Public Relation agencies and in-house PR departments use ClipCoverage to create media coverage reports automatically. Paste in coverage URLs and we grab all the screenshots & PR metrics automatically.

Install via

Login to ClipCoverage, and click Install now in Quickstart guide:

Search from Slides add-on store:

Open a Google Slides file > Add-ons > Get add-ons..., and then search "clipcoverage".