API catalog

Free

arXiv Papers

knowledge:arxiv

Search scientific papers on arXiv with authors, abstract, categories and link. Metadata only; read the papers on a…

1 endpoint arXiv API (export.arxiv.org)

Free

Book Data (Open Library)

knowledge:buku

Search books by keyword, or open one by ISBN-10 or ISBN-13: title, authors, publishers, publish date, page count, …

2 endpoints Open Library (openlibrary.org, Internet Archive)

Free

Clinical Trials (ClinicalTrials.gov)

knowledge:clinical-trials

Search clinical trials in the US National Library of Medicine registry: status, phase, sponsor and condition studi…

1 endpoint ClinicalTrials.gov API v2 (clinicaltrials.gov)

Free

Biomedical Literature (Europe PMC)

knowledge:europepmc

Search biomedical and life-science articles with authors, journal, year and DOI.

1 endpoint Europe PMC REST API (ebi.ac.uk)

Free

Biodiversity (GBIF)

knowledge:gbif

Match a species' scientific name and see how many occurrence records it has per year in a country.

2 endpoints GBIF API (api.gbif.org)

Free

English Dictionary

knowledge:kamus-inggris

English word definitions with part of speech, example sentences, synonyms, antonyms, phonetics and pronunciation a…

1 endpoint Free Dictionary API (dictionaryapi.dev, data Wiktionary)

Free

Health Topics (MedlinePlus)

knowledge:medlineplus

Search health topics from MedlinePlus with summary and link, in English. General information, not a substitute for…

1 endpoint MedlinePlus Web Service (nlm.nih.gov)

Free

Nobel Prizes

knowledge:nobel

Nobel Prize winners since 1901 with category, year, prize amount and motivation.

1 endpoint Nobel Prize API (api.nobelprize.org)

Free

NusaX Sentiment Corpus

knowledge:nusax

Sentences labelled positive, neutral or negative for training and testing sentiment models, in Indonesian, 10 loca…

2 endpoints IndoNLP NusaX (github.com/IndoNLP/nusax)

Free

Biomedical Literature (PubMed)

knowledge:pubmed

Search medicine and life science articles in PubMed: title, journal, publication date, authors and DOI.

1 endpoint NCBI E-utilities (eutils.ncbi.nlm.nih.gov)

Free

US Drug Labels and Recalls (openFDA)

knowledge:openfda

Purpose, warnings and directions from drug labels registered in the United States, plus drug recall records. Not m…

2 endpoints openFDA Drug APIs (api.fda.gov)

Free

Wikipedia Pageviews

knowledge:wikipedia-pageviews

Daily views of a Wikipedia article and the most read articles, to see how much public attention a topic gets.

2 endpoints Wikimedia Analytics API (wikimedia.org)

Free

Wikidata

knowledge:wikidata

Search entities such as places, organisations and concepts, with descriptions and identifiers.

1 endpoint Wikidata API (wikidata.org)

Free

Cleveland Museum of Art Collection

knowledge:cleveland-museum

Search CC0 artworks with culture, technique, date and image.

1 endpoint Cleveland Museum of Art Open Access API

Free

Research Archive (Zenodo)

knowledge:zenodo

Search datasets, papers, software and other research material stored on Zenodo, with DOI and license.

1 endpoint Zenodo REST API (zenodo.org)