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Free Literary Fiction audiobooks: public-domain recordings in LibriVox's "Literary Fiction" genre (701 titles and growing) with runtime, language and direct mp3 zip / RSS / archive.org links, plus matching audio from Internet Archive. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Free Romance audiobooks: public-domain recordings in LibriVox's "Romance" genre (914 titles and growing) with runtime, language and direct mp3 zip / RSS / archive.org links, plus matching audio from Internet Archive. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Free Short Stories audiobooks: public-domain recordings in LibriVox's "Short Stories" genre (915 titles and growing) with runtime, language and direct mp3 zip / RSS / archive.org links, plus matching audio from Internet Archive. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Free General Fiction audiobooks: public-domain recordings in LibriVox's "General Fiction" genre (1166 titles and growing) with runtime, language and direct mp3 zip / RSS / archive.org links, plus matching audio from Internet Archive. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Free Poetry audiobooks: public-domain recordings in LibriVox's "Poetry" genre (1688 titles and growing) with runtime, language and direct mp3 zip / RSS / archive.org links, plus matching audio from Internet Archive. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Free films of the 1960s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1960-1969, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free films of the 1950s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1950-1959, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free films of the 1940s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1940-1949, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free films of the 1920s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1920-1929, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free films of the 1910s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1910-1919, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free films of the 1900s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1900-1909, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free Action & Adventure audiobooks: public-domain recordings in LibriVox's "Action & Adventure" genre (561 titles and growing) with runtime, language and direct mp3 zip / RSS / archive.org links, plus matching audio from Internet Archive. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Free Science Fiction audiobooks: public-domain recordings in LibriVox's "Science Fiction" genre (884 titles and growing) with runtime, language and direct mp3 zip / RSS / archive.org links, plus matching audio from Internet Archive. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Free films of the 1970s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1970-1979, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free films of the 1930s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1930-1939, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free films of the 1890s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1890-1899, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.

Free public-domain books on "Social classes": browse the catalogue's works tagged with that Library of Congress subject (203 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Change watch for author detect: runs the check and compares it with the result from your previous call for the same url (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when article author and byline detection changes. $0.01 per check.

Change watch for form detect: runs the check and compares it with the result from your previous call for the same url (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when form detection on a page changes. $0.01 per check.

Change watch for rss feed discovery: runs the check and compares it with the result from your previous call for the same url (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when rss / atom feed discovery changes. $0.01 per check.

Change watch for social profiles finder: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when find a company's social media profiles from its website changes. $0.01 per check.

Bulk author detect: up to 20 urls in one call, processed concurrently, results returned in input order with a per-item error field and a count of failures. Same answer per item as the single /site/author endpoint (Article author and byline detection). Batch enrichment for agents that hold a list. $0.01 per batch.

Bulk rss feed discovery: up to 20 urls in one call, processed concurrently, results returned in input order with a per-item error field and a count of failures. Same answer per item as the single /site/feeds endpoint (RSS / Atom feed discovery). Batch enrichment for agents that hold a list. $0.01 per batch.

Bulk social profiles finder: up to 20 domains in one call, processed concurrently, results returned in input order with a per-item error field and a count of failures. Same answer per item as the single /social-links endpoint (Find a company's social media profiles from its website). Batch enrichment for agents that hold a list. $0.01 per batch.

The last 24 hours of high-signal developer news from Hacker News, ranked by engagement and classified across eleven topics: AI, devtools, data, infra, security, web, hardware, policy, business, science and culture. Every row carries a developer_relevant flag, so you can keep the engineering stories and drop the front page's politics and obituaries, about half of a typical day. Add ?since=<ISO-8601> for only what is new; an empty delta is free, and so is a since older than the window.

Discover social media profiles for a person by email or URL

IPO X/Twitter social-sentiment score (aggregate signal, no raw posts)

Get a TikTok profile by handle.

List posts from an Instagram profile by handle.

Notify when a listed-price reduction reaches a chosen percentage; previous price must be positive. Uses an optional predicate extension of the proven Price-Callback motor. price_percentage_drop_decision records this exact rule; the rule executes BEFORE dispatch. Same public IPv4HTTPS pinned connections, robots checks,9s,1MiBHTML,at-most-once receipt/idempotency7days,failureschargedfalse. Caller supplies historical price and schedules polling.