Separate RSS Feeds by category or topic

No need for plugin.
WP creates the category feeds out of the box.
example.com/category/mycategory/feed – if using permalinks;
otherwise they are at:
example.com/?cat=1&feed=rss2

Thanks much. I was using example.com/feed/category/mycategory. That explains it.

Now that I have that straightened out, how do I call the category slug? get_the_category only seems to let me get id, title, and description. I’m using

foreach((get_the_category()) as $cat) {
echo $cat->cat_name . ' ';
}

as I am constructing a feed link on each category page. My loop doesn’t give me the slug though.

Since the table column in wp-categories is category_nicename,

foreach((get_the_category()) as $cat) {
echo $cat->category_nicename . '/feed';
}

gets the job done. I see that I can call table data by column name. Safe to assume other functions work by the same logic. I’ll see.