Your task will be to create a plugin to poll RSS feeds and create wordpress posts. You can use a GPL project such as https://wordpress.org/plugins/import-xml-feed/ as a starting point if you wish. This will be a plugin that we distribute to partners who want to carry our feed.
The basic functionality would be the following.
Accept 1 or 2 RSS feeds (we will provide this to the partner but they will need to enter it into the WordPress plugin.
Settings to allow where posts are created within the wordpress site.
Poll the feed at least once per hour to look for new items. This means it must check already published items so we do not create duplicates.
When a new item is found it will create a post. We may need to allow the partner to designate the category or type of post via plugin settings.
On all posts created by this plugin, a remote JavaScript needs to be called. So the reference to that JavaScript needs to be inserted into the footer of the page.