science-articles

DOAJ

A directory of vetted open-access journals together with article-level metadata, covering roughly 21,000 journals and over 10 million articles. Searches run through a keyless interface over its openly licensed metadata, or you can browse the site directly. Use it to confirm a journal is genuinely open access or to find freely readable articles.

Academic papers API

Search this archive

Why it’s useful & how it works

DOAJ is the most trusted directory of genuine open-access journals: its editorial team vets every journal for quality, so a listing here is a signal that an article is freely available and legitimately peer-reviewed. You can search article-level metadata to find a paper, or look up a journal title to confirm it is truly open access. Echo queries DOAJ's openly licensed metadata API, which requires no key and covers every discipline.

What’s inside

Over 21,000 vetted open-access journals from across all fields of science, social science, arts, and humanities, with more than 13 million individual article records indexed.

API access

https://doaj.org/api/v3/search/articles/ <query> ; .../journals/<query>

What we measured

Our own probes, not the archive’s own claims. Re-run periodically; every reading below is dated.

Reachability

Direct request: Responded HTTP 200 316 ms
Through a datacenter proxy: Responded HTTP 200 976 ms
API, direct: Responded HTTP 200 144 ms
API, through a proxy: Responded HTTP 200 9.6 s

Did a real search return anything?

Returned results · 762371 results for the sample query · median 328 ms · stable across runs

Sample query: Crystal structure of tris(tri-tert-butoxysilanethiolate)arsenic(III), As{SSi(OC4H9)3}3

Benchmark coverage

Found 8 of 8 test items (100%) in the Academic papers cluster. Median response 124 ms.

By how well known the item is: 3/3 well-known, 3/3 mid, 2/2 obscure .

One item it found: Fishing, predation, and temperature drive herring decline in a large marine ecosystem

Reachability measured 2026-08-22. Search checked 2026-08-22. Benchmark run 2026-08-22.