Fetch and parse an RSS or Atom feed. Returns feed metadata (title, subtitle, language) and a list of entries (title, link, published date, author, summary, tags). Use limit to cap how many entries you get back — feeds can be huge. Works with any publicly-accessible feed URL.

Fetch a feed and return only entries whose title or summary contain a keyword (case-insensitive). Useful when you want the AI to check a feed for specific topics without wading through everything.

Fetch metadata for one or more feeds without loading all entries — title, subtitle, entry count, last update time. Useful for building a dashboard of feeds you follow.