A podcast's show id from its title or its RSS feed URL (Podcast Index podcasts/byfeedurl, search/byterm): `show_id`, `title`, `feed_url`, `url`, `description`, `author`, `language`, `episode_count` and `newest_episode_at`. A title must match one show exactly (ignoring case) or be the only hit; otherwise it is a miss, since a wrong show is worse than none, and the feed URL is exact.
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Maximum charge per unit: $0.00.