Unpackerr runs as a daemon on your download host. It checks for completed downloads and extracts them so Radarr, Lidarr, Sonarr, and Readarr may import them. There are a handful of options out there for extracting and deleting files after your client downloads them. I just didn't care for any of them, so I wrote my own. I wanted a small single-binary with reasonable logging that can extract downloaded archives and clean up the mess after they've been imported.
This application does not have any specific setup instructions documented. If you need assistance setting up this application please visit our support page.