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Curated shelf: American Literature — 7572 public-domain books including Moby Dick; Or, The Whale, Little Women; Or, Meg, Jo, Beth, and Amy, Bidwell's Travels, from Wall Street to London Prison: Fifteen Years in Solitude. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Philosophy & Ethics — 2479 public-domain books including Meditations, The City of God, Volume I, The Confessions of St. Augustine. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated reading list on Man-woman relationships -- Fiction for tutoring agents, quiz generators, and reading apps — 908 public-domain books (e.g. What Will People Say? A Novel, Manon Lescaut, A farewell to arms). Full-text retrieval with drill-down routes for chapters, quotes, and citations. No license, no API key required.

Curated shelf: Religion/Spirituality — 3658 public-domain books including The City of God, Volume I, The Confessions of St. Augustine, Autobiography of a Yogi. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Adventure stories — 1382 public-domain books including Moby Dick; Or, The Whale, The Count of Monte Cristo, The Yeoman Adventurer. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Plays/Films/Dramas — 1668 public-domain books including Romeo and Juliet, The Complete Works of William Shakespeare, Romeo and Juliet. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: French Literature — 1293 public-domain books including The Count of Monte Cristo, Carmen, The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Humorous stories — 336 public-domain books including A Room with a View, The Adventures of Tom Sawyer, Complete, History of Tom Jones, a Foundling. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Young women -- Fiction — 424 public-domain books including Pride and Prejudice, A Room with a View, Middlemarch. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Banned Books from Anne Haight's list — 41 public-domain books including The Adventures of Sherlock Holmes, Adventures of Huckleberry Finn, The Adventures of Tom Sawyer, Complete. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Banned Books List from the American Library Association — 10 public-domain books including Adventures of Huckleberry Finn, The Adventures of Tom Sawyer, Complete, The Awakening, and Selected Short Stories. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Married people -- Fiction — 141 public-domain books including Middlemarch, Jane Eyre: An Autobiography, The Secret Adversary. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf of public-domain children's and young-adult classics, ranked by historical popularity. Returns title, author, year, book_id, and drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Crime, Thrillers and Mystery — 1977 public-domain books including Crime and Punishment, Carmen, The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Psychiatry/Psychology — 471 public-domain books including Psychotherapy, Essay on the Creative Imagination, Three Thousand Years of Mental Healing. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Children's Literature — 304 public-domain books including Alice's Adventures in Wonderland, The Wonderful Wizard of Oz, Treasure Island. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf of public-domain philosophy and ethics texts — from ancient to early-modern thought — ranked by historical popularity. Returns title, author, year, book_id, and drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Humour — 4010 public-domain books including The Passionate Elopement, A Pickle for the Knowing Ones, The Expedition of Humphry Clinker. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Mystery fiction — 339 public-domain books including Dracula, The Woman in White, The Big Four. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Trade-lot holding-period and realized-gain calculator for trading agents: per-lot days held, the exact date each lot's gain character turns long-term, and FIFO / specific-identification allocation of a proposed sell with realized gain per lot and per-character totals. Deterministic arithmetic on caller-supplied lots with the published threshold cited (IRC §1222: held more than one year) — counts, dates, and dollars only, never advice. Nothing is stored.

Real-time biomedical research pulse — 7d/30d/90d publication volumes from PubMed with year-over-year change for any medical or scientific topic

Scans and validates security credentials or sensitive authentication tokens for potential exposure or misconfiguration.

USD Coin

Curated shelf: Children's Picture Books — 172 public-domain books including The Tale of Peter Rabbit, Struwwelpeter: Merry Stories and Funny Pictures, The National Nursery Book With 120 illustrations. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.