CORE

core.ac.uk · Debrid, Storage · 2 records · JSON

CORE (core.ac.uk) API v3 Debridcaveatemailno cardDrequest-rate
core (core.ac.uk) — the 'can i deposit?' answer Storagefails: quotaemail?card?R

CORE (core.ac.uk) API v3 Debrid

caveatemailno cardDrequest-rate

core.ac.uk/services/api · open-access aggregator (metadata plus full-text links) · debrid/core-ac-uk · JSON · compare

Free tier	The vendor advertises 'Free real-time machine access to the world's largest collection of open access papers' with 'Unlimited access' and 'Direct machine access to full texts of research papers'. The v3 API reference authenticates with 'Authorization: Bearer {apikey}'. unit unlimited; metered on none; 'Unlimited access' is the vendor's phrase and is not a measured rate.
Price	USD 0
Per-object cap	not applicable: JSON per query, with download endpoints that return the stored PDF. A one-record search response measured 2,091 bytes.
Retention	the index is rebuilt from provider repositories; full texts live at the provider, so a CORE download can stop resolving when a repository changes
Egress	Free. The API key is a free registration, not a purchase; no price appears on the service page. free_allowance: no byte allowance published
Identity	email A free API key from CORE registration, sent as a Bearer token. Anonymous calls answered 200 in this test, so the gate is not enforced on search today.
Limits	request-rate no numeric limit is published on the service page or in the API reference; the reference documents 429 as the throttling response source The key requirement is documented ('Bearer {apikey}') but the gate is soft today: an anonymous /v3/search/works call returned 200 with 2,091 bytes of real JSON on 2026-10-23. Treat the key as required by contract and not by enforcement until it is re-tested.
Binding	request-rate The documented unlimited access is an unmeasured claim; with no published rate, the only known ceiling is the 429 the reference documents, which cannot be located without a sustained run.
Interface	rest, cli GET https://api.core.ac.uk/v3/search/works?q=...&limit=N with an Authorization: Bearer header; separate endpoints for outputs, data providers and full-text download. endpoint: https://api.core.ac.uk/v3/search/works
Tooling	curl/python-requests; no SDK required.
Composes with	A full-text aggregator that overlaps Europe PMC and PMC on biomedical content but also covers humanities and social science repositories those two miss.
Reliability	A full-text link can rot on the provider side even while the CORE record survives; the aggregator's copy is a pointer, not a mirror.
Notes	Caveat is the unmeasured rate: the marketing says unlimited and the reference says 429. Neither is a number, so the record cannot promise a day's bytes.
Evidence rung	documented The service page and the API reference were read, and one anonymous call was made. The rate ceiling and the enforcement of the key are both unverified.
Checked	2026-10-24 (live); stale on 2026-11-23
Parsed numbers	`$.price_per_tb_month` price-per-tb USD0.0 TB / month

Evidence (3)

date	source	what it proved
2026-10-23	core.ac.uk/services/api	'Free real-time machine access', 'Unlimited access', 'Direct machine access to full texts of research papers'
2026-10-23	api.core.ac.uk/docs/v3	the v3 reference's authentication scheme: 'Authorization: Bearer {apikey}'
2026-10-23	probe:https://api.core.ac.uk/v3/search/works?q=cancer&limit=1	200 with 2,091 bytes of JSON to an anonymous client - the key is documented but not enforced on this endpoint today

More fields (2)

{
 "auth_header": "Authorization: Bearer <apikey>",
 "anonymous_search_status": 200
}

core (core.ac.uk) — the 'can i deposit?' answer Storage

fails: quotaemail?card?R

core.ac.uk/faq · rejected-provider · storage/core-the-can-i-deposit-answer · JSON · compare

Free tier	No deposit path at all. CORE is a harvester: it indexes full text from repositories it already crawls and explicitly refuses author submissions. The API key is free and the fulltext is real, unit none; metered on none
Price	none stated
Per-object cap	not recorded
Retention	not recorded
Egress	not recorded
Identity	email (placeholder) not published
Binding	none no constraint of a named kind was recorded; the verdict rests on the quota sentence rather than on a named limit
Interface	unknown
Tooling	not recorded
Composes with	not recorded
Reliability	No deposit path at all. CORE is a harvester: it indexes full text from repositories it already crawls and explicitly refuses author submissions. The API key is free and the fulltext is real,
Notes	No deposit path at all. CORE is a harvester: it indexes full text from repositories it already crawls and explicitly refuses author submissions. The API key is free and the fulltext is real,
Evidence rung	reported
Checked	2026-10-21 (inherited); stale on 2026-11-04

Evidence (1)

date	source	what it proved
2026-10-21	core.ac.uk/faq	No deposit path at all. CORE is a harvester: it indexes full text from repositories it already crawls and explicitly refuses author submissions. The API key is free and the fulltext is real,

More fields (1)

{
 "dead_end": {
  "failure_class": "quota",
  "why": "No deposit path at all. CORE is a harvester: it indexes full text from repositories it already crawls and explicitly refuses author submissions. The API key is free and the fulltext is real,",
  "retry_when": null,
  "first_recorded": "2026-10-21"
 }
}

Unknown or withheld values (15)

$.chaining not-recorded
$.confidence_note withheld
$.egress.terms not-recorded
$.extras.dead_end.retry_when process
$.free_tier.notes process
$.identity_cost.detail defaulted
$.identity_cost.kind identity-defaulted
$.interface interface-unknown
$.interface_detail withheld
$.limits_note process
$.per_object_cap.notes not-recorded
$.per_object_cap.stated not-recorded
$.retention.notes process
$.retention.stated not-recorded
$.tooling not-recorded