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Unpaywall

Open-access status and legal full-text links for scholarly articles

Science & MathAuth: NoneHTTPS: YesCORS: yesStatus: alive

Last verified: November 12, 2026

Reliability

100% uptime: the documentation responded in 5 of 5 checks over the last 30 days. Median response time: 146 ms.

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At a glance

// Fetch the docs page with cURL curl https://unpaywall.org/products/api

History

  • November 12, 2026: last health check, responding

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More Science & Math APIs

Looking for other Science & Math APIs? Here are more free options in the same category:

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  • CORE — Access the world's Open Access research papers
  • Chempirical — Chemical compounds with physical data, reactions and substructure search
  • CodeCogs — Render LaTeX equations in PNG, GIF, SVG, EMF, PDF, JSON, or download formats with styling options
  • CycleCalcs — Interpreted astronomy: sun and moon times, moon phases, planets, eclipses, seasons
  • DataCite — Search and retrieve DOI metadata for research datasets and publications
  • ENA — Nucleotide sequences, genomes and raw reads archive
  • Europe PMC — Life-science literature search with abstracts, citations and full-text links
  • GBIF — Global Biodiversity Information Facility

View all Science & Math APIs →