OpenAlex
Open catalog of scholarly works, authors, institutions, sources, and concepts
- Authentication
- No auth
- HTTPS
- Yes
- CORS
- Yes
- Category
- Science & Math
- Data source
- public-apis
- Documentation / URL
- https://docs.openalex.org/
Overview
OpenAlex is a free, open index of 250M+ scholarly works — papers, authors, institutions, journals, concepts — with rich metadata and citation links. Keyless and CORS-enabled (verified live), it’s the modern replacement for the retired Microsoft Academic Graph.
Quick Start
Search works (verified live):
curl "https://api.openalex.org/works?search=quantum%20computing&per-page=3"A single work by OpenAlex ID:
curl "https://api.openalex.org/works/W2741809807"Author profile:
curl "https://api.openalex.org/authors/A2208157607"Filter by institution/country:
curl "https://api.openalex.org/works?filter=institutions.country_code:US,from_publication_date:2026-01-01&per-page=5"Authentication
None — keyless (add an email in mailto= param for the polite pool).
Rate Limits & Notes
- Free and open; the polite pool (with
mailto=) gets faster, more generous service. - IDs look like
W2741809807(works),A2208157607(authors),S(sources/journals),I(institutions). - Rich fields:
title,doi,publication_year,cited_by_count,authorships,open_access,concepts. - Results include
next/previouscursor links for pagination.
FAQ
Is OpenAlex free? Yes — fully free, keyless, and open (CC0 data).
What happened to Microsoft Academic? OpenAlex is its community-supported successor.
How do I get faster responses?
Pass [email protected] to join the polite pool.
More in Science & Math
| API | Auth | HTTPS | CORS | |
|---|---|---|---|---|
| arcsecond.io Multiple astronomy data sources | No auth | Yes | Unknown | ↗ |
| arXiv Curated research-sharing platform: physics, mathematics, quantitative finance, and economics | No auth | unknown | Unknown | ↗ |
| arXiv Curated research-sharing platform: physics, mathematics, quantitative finance, and economics | No auth | Yes | Unknown | ↗ |
| Bootprint Random facts and images of space | No auth | Yes | Unknown | ↗ |
| CodeCogs Render LaTeX equations in PNG, GIF, SVG, EMF, PDF, JSON, or download formats with styling options | No auth | Yes | Unknown | ↗ |