Searches across all of Reddit for posts or comments matching a query. Set filter to posts (the default) or comments. Post results include title, author, selftext, subreddit, score, ups, num_comments, created_utc, url, permalink, and is_video. Comment results include the matching body, author, votes, timestamps, comment URL, parent relationship, and post/subreddit context. Comment searches support relevance, new, and top sorting. Timeframe filtering applies to post searches. Pagination uses the after token, and trim returns a lighter response. upvote_ratio and subreddit_subscribers are currentl Uses the caller's OpenAny gateway credentials. Charges and authorization are determined by the gateway.