All services

Curated shelf: PE — 249 public-domain books including Chambers's Twentieth Century Dictionary (part 1 of 4: A-D), The Comic English Grammar: A New And Facetious Introduction To The English Tongue, The Ontario High School Reader. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Christianity — 214 public-domain books including The Confessions of St. Augustine, Jesus the Christ A Study of the Messiah and His Mission According to Holy Scriptures Both Ancient and Modern, Expositions of Holy Scripture Second Corinthians, Galatians, and Philippians Chapters I to End. Colossians, Thessalonians, and First Timothy.. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: NK — 161 public-domain books including The Tapestry Book, Wood-Carving: Design and Workmanship, Chats on Household Curios. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: PZ — 7456 public-domain books including The Blue Castle: a novel, Alice's Adventures in Wonderland, Little Women; Or, Meg, Jo, Beth, and Amy. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated reading list on N for tutoring agents, quiz generators, and reading apps — 187 public-domain books (e.g. Lives of the Most Eminent Painters Sculptors and Architects, Vol. 01 (of 10) Cimabue to Agnolo Gaddi, A history of art in Chaldæa & Assyria, Vol. 1 (of 2), A History of Art for Beginners and Students: Painting, Sculpture, Architecture). Full-text retrieval with drill-down routes for chapters, quotes, and citations. No license, no API key required.

x402 MCP web parser: URLs to Markdown for agents. USDC on Base, Polygon, Arbitrum, Ethereum.

Schedule a future HTTP action or callback for autonomous agents. At a delay or a set time, either (a) execute an HTTP request you specify (method/url/headers/body) and capture the response for retrieval, or (b) deliver a JSON payload to your HTTPS callback URL (push) / hold it for polling. Lets agent loops defer and fire web actions without staying online or busy-polling.

One-time secret relay for inter-agent handoff. store(secret) returns a token; redeem(token) returns the secret exactly once, then burns it. Pass credentials or short-lived values between agents without persisting them.

Distributed lock / idempotency primitive for multi-agent swarms. claim(key) returns a token if free (with TTL); release(token) frees it; check(key) reports whether held. Stops multiple agents from double-processing the same work item.

Retrieves trust and safety information for websites.

Curated shelf: QE — 168 public-domain books including A Study of Recent Earthquakes, The chemistry, properties and tests of precious stones, Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Law & Criminology — 527 public-domain books including By Advice of Counsel, The Life of John Marshall, Volume 4: The building of the nation, 1815-1835, The Journal of Negro History, Volume 6, 1921. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Life on other planets -- Fiction — 154 public-domain books including The gods of Mars, Plague Ship, The war of the worlds. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Journals — 1421 public-domain books including The Journal of Negro History, Volume 6, 1921, Chambers's Journal of Popular Literature, Science, and Art, fifth series, no. 153, vol. III, December 4, 1886, The Journal of Negro History, Volume 3, 1918. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Voyages and travels -- Juvenile fiction — 304 public-domain books including Baron Trump's Marvellous Underground Journey, Yr Ynys Unyg; or, The lonely island : $b a narrative for young people, Adrift in the Wilds; Or, The Adventures of Two Shipwrecked Boys. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Sports/Hobbies — 596 public-domain books including The Horsewoman: A Practical Guide to Side-Saddle Riding, 2nd. Ed., Home Taxidermy for Pleasure and Profit A Guide for Those Who Wish to Prepare and Mount Animals, Birds, Fish, Reptiles, etc., for Home, Den, or Office Decoration, Auction of To-day. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Science -- Periodicals — 211 public-domain books including Lippincott's Magazine of Popular Literature and Science, Vol. 22, September, 1878, Lippincott's Magazine of Popular Literature and Science, December 1878, Lippincott's Magazine of Popular Literature and Science, Volume 11, No. 24, March, 1873. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Literature, Modern -- 19th century -- Periodicals — 189 public-domain books including The yellow book, an illustrated quarterly. Vol. 3, October, 1894, The International Monthly Magazine, Volume 5, No. 1, January, 1852, The International Magazine, Volume 2, No. 3, February, 1851. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: QL — 664 public-domain books including Audubon the Naturalist: A History of His Life and Time. Vol. 2 (of 2), Anecdotes of Dogs, Anecdotes of the Habits and Instinct of Animals. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Science - Physics — 510 public-domain books including The Notebooks of Leonardo Da Vinci — Complete, Steam, Its Generation and Use, The Story of the Heavens. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: CT — 242 public-domain books including Modern English biography, volume 2 (of 4), I-Q, Bidwell's Travels, from Wall Street to London Prison: Fifteen Years in Solitude, Modern English biography, volume 1 (of 4), A-H. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Marriage -- Fiction — 136 public-domain books including The Amazing Marriage — Complete, The Raft, Bambi. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Technology — 219 public-domain books. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

Curated shelf: Conduct of life -- Juvenile fiction — 1019 public-domain books including Baron Trump's Marvellous Underground Journey, Fifty-Two Stories For Girls, The strange house : $b or, A moment's mistake. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.