Thanks you for contacting us.
At this point you cannot use our pCloud service as torrent downloading program.
However you can download torrents directly to your pCloud. To do that you need to download our Desktop version from here https://www.pcloud.com/download-pcloud#page=windows .
Then use torrent downloading program and select your pCloud folder as directory.
The torrent files which you download will be uploaded directly to your pCloud account.