But Leo wasn't looking for an API anymore. He was looking for a workaround. The "Franken-Sync" Solution
sudo apt install davfs2 sudo mount -t davfs https://cloud.movistar.es/remote.php/webdav/ ~/MovistarCloud movistar cloud en linux full
: On his main machine, he mounted that network share directly into his /home/leo/Cloud directory. The Result: "Full" Integration But Leo wasn't looking for an API anymore