Optional. Go to rss2json.com and make an account to obtain an API key, then paste it here. If you leave this blank, you will be limited to a maximum of ten articles per feed.
Your Pebble will only display content included in your RSS feed. If a feed only contains headlines, you will only be able to read headlines. You may be able to turn headline-only feeds into full-text feeds with fivefilters.org/content-only/.