You already have the option to use a personal feed link from dl.rpdl.net by going to your profile and copy the RSS Feed link that is shown there.
But, it doesn't allow limiting the output to just a single category. If your torrent client can filter on a 'category' field, then you can just use your personal feed from dl.rpdl.net.
However, if your torrent client can't filter on the 'category' field and expects the category to be part of the 'description' field, you can use
this feed. You still have to use the key as shown in the link on your profile though.
Important: They key from your profile never expires, you will only need to revisit this page when you've reset your key or want to generate a feed for a different category.
Getting your key
1. Visit dl.rpdl.net and "Sign in" if you aren't signed in yet.
2. Click on your username top right and select profile.
3. Locate the RSS Feed section.
4. Click the copy button to copy your personal feed link.
5. Paste it in the field below (the key will be extracted when you click submit).
Fetching your RSS feed
Note: Nothing is sent back to the server, everything you enter is contained locally.
Note: You need to generate a separate feed for each wanted category.