The directory is mostly restricted but if you found it to be accessible then it's your day.
Otherwise each download is linked with an unique token that is generated with your account and the file is delivered to you, if it matches with your token then it downloads otherwise not, and overall each download has unique value associated witb them. That makes them hard to access let aone download at all, but you can create a macro script that replicates your process and let it run in background so you can download the files(if the process is same)
AFAIK what you need is not possible at the moment, no software available but who knows there could be one. then good for you.
As for you can use this operator in search engine
"index of" site:yoursitename.ltd + keyword(if needed)