Browse indexable science and education x402 offerings, including provider, method, and service details.
1729 indexable offerings in this category.
Search the indexed public-domain corpus for complete source passages with title, author, section, passage indices, and Gutenberg links. Results rank up to 400 matching candidates, not every corpus match. Retrieval only, no generated answer. Common question words are removed; remaining terms must match together.
Curated reading list on QE for tutoring agents, quiz generators, and reading apps — 168 public-domain books (e.g. A Study of Recent Earthquakes, The chemistry, properties and tests of precious stones…
Look up metadata by book_id: title, author, Gutenberg ebook release year (not original publication year), subjects, bookshelves, download count, and detected section range. Front matter is reported s…
Everything free by William Clark Russell: the 57 catalogued public-domain books, audiobooks and texts credited to William Clark Russell across Project Gutenberg, LibriVox and Internet Archive, most popular first, each with direct download links. Add words to narrow by title. Re-verified daily. $0.01 per page of 20.
Everything free by Jerome K. (Jerome Klapka) Jerome: the 47 catalogued public-domain books, audiobooks and texts credited to Jerome K. (Jerome Klapka) Jerome across Project Gutenberg, LibriVox and Internet Archive, most popular first, each with direct download links. Add words to narrow by title. Re-verified daily. $0.01 per page of 20.
Free scanned texts from the 1860s: Internet Archive documents, pamphlets, periodicals and books dated 1860-1869 (Americana and library collections), most downloaded first, with rights status and links. $0.01 per page of 20.
Free books first published in the 1620s: public-domain works dated 1620-1629 in the catalogue (Internet Archive scans and dated Gutenberg editions), most downloaded first, with download links. Period reading and historical research. $0.01 per page of 20.
Free books first published in the 1820s: public-domain works dated 1820-1829 in the catalogue (Internet Archive scans and dated Gutenberg editions), most downloaded first, with download links. Period reading and historical research. $0.01 per page of 20.
Everything free by Fergus Hume: the 100 catalogued public-domain books, audiobooks and texts credited to Fergus Hume across Project Gutenberg, LibriVox and Internet Archive, most popular first, each with direct download links. Add words to narrow by title. Re-verified daily. $0.01 per page of 20.
Everything free by Rubén Darío: the 31 catalogued public-domain books, audiobooks and texts credited to Rubén Darío across Project Gutenberg, LibriVox and Internet Archive, most popular first, each with direct download links. Add words to narrow by title. Re-verified daily. $0.01 per page of 20.
Literature review map in one call. Give a seed paper (DOI, arXiv id, OpenAlex id, or PMID) or a topic query and get one structured result: the seed's references, its cited-by list (most-cited first), and semantically related work, deduplicated into one uniform table with title, authors, year, venue, DOI, and citation count. Collapses search, citation lookup, and related-paper discovery into a single call. Keyless.
Blue Zone intelligence / longevity hotspot guide (Okinawa, Sardinia, Ikaria, Nicoya, Loma Linda) for longevity and wellness agents. Deep-dives the diet, lifestyle, genetics, and social fabric of the world's longest-lived populations, with what you can actually apply anywhere. Health intelligence, not medical advice.
Structured reasoning on a thesis: the setup, the scenario tree, what would invalidate it, and the level where the thesis is simply wrong.
Return a bounded, source-labelled set of public-domain Bible passages and neutral reflection prompts for one of six predefined topics.
Compare a bounded passage in the public-domain BSB and WEB without blending or interpreting the source texts.
Find source-linked scientific papers by topic. Returns metadata pointers, authors, dates, licence evidence when supplied by the source, and corpus provenance; it does not sell paper text or infer reuse rights.
Retrieve one bounded day from a deterministic seven-day gospel, psalm-prayer, or practical-wisdom reading plan using source-labelled public-domain Bible text.
Return bounded ranked OpenBible.info cross-reference identifiers with displayed text resolved only from BSB or WEB.
Retrieve a bounded passage from the public-domain Berean Standard Bible or World English Bible with exact source labels and provenance.
Build a Vimshottari timing display with birth balance, nine mahadashas and nine antardashas of the active mahadasha at a reference instant. Uses actual nakshatra stay time and a 365.2425-day year; includes conventions and receipt. Public or synthetic inputs only. No event prediction or interpretation; bodies are not stored.
Build an astronomy or astrology tool with seven classical-body geocentric longitudes at one UTC instant, Tropical and versioned Lahiri Sidereal frames, conventions and a deterministic receipt. Public or synthetic inputs only. No interpretations, forecasts or predictive certification. Request and result bodies are not stored.
Build a reproducible chart view: Tropical and Lahiri Sidereal positions, Sidereal whole-sign houses, mean nodes, geometric aspects and panchanga for one UTC chart. Includes limitations and a deterministic receipt. Public or synthetic inputs only. No interpretation, forecast or predictive certification; bodies are not stored.
Search scholarly papers: title, year, first authors, venue, citation count, DOI and a free full-text link when one exists, most relevant first.
Search scholarly papers: title, year, first authors, venue, citation count, DOI and a free full-text link when one exists, most relevant first.