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Open Access

Score 36.5 / 100 132 providers +61 via APIs 279 APIs Search apis.io →
Variants seen in the corpus: Open AccessOpenAccess

Providers using this tag (132)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Strong 4 Solid coverage with minor gaps
Delft University of TechnologyUniversityHigher EducationEducationTechnical University1 API65.2TU WienUniversityHigher EducationEducationTechnical University1 API56.2University of CambridgeEducationHigher EducationUniversityResearch1 API55.2Australian National UniversityUniversityHigher EducationEducationResearch3 APIs54.3
Developing 37 Usable, with meaningful gaps to close
Uppsala UniversityUniversityHigher EducationEducationSweden1 API52.5arXivScience And MathScholarly PublishingPreprints2 APIs51.5FigshareResearch DataData RepositoryOpen ScienceDOI1 API51.1Seoul National UniversityUniversityHigher EducationEducationSouth Korea6 APIs50.7University of TokyoUniversityHigher EducationEducationJapan3 APIs49.6DryadResearch DataOpen ScienceData RepositoryDatasets1 API49.5University of Hong KongEducationHigher EducationUniversityHong Kong1 API48.9University of LisbonUniversityHigher EducationEducationPortugal1 API48.6RWTH Aachen UniversityEducationHigher EducationUniversityTechnical University1 API48.5McMaster UniversityUniversityHigher EducationEducationCanada1 API48.2Utrecht UniversityEducationHigher EducationUniversityNetherlands2 APIs47.4Erasmus University RotterdamUniversityHigher EducationEducationNetherlands1 API46.8DeSci LabsCompanyAi Enterprise SoftwareResearch InfrastructureDecentralized Science1 API45.8University of the WitwatersrandUniversityHigher EducationEducationResearch2 APIs44.8University of OttawaUniversityHigher EducationEducationCanada3 APIs44.4University of SheffieldUniversityHigher EducationEducationUnited Kingdom1 API44.0Université de MontréalUniversityHigher EducationEducationCanada1 API43.9Kyoto UniversityUniversityHigher EducationEducationJapan2 APIs43.8Smithsonian InstitutionMuseumsCultural HeritageCollection1 API43.7University of YorkUniversityHigher EducationEducationUnited Kingdom3 APIs43.7Pennsylvania State UniversityEducationHigher EducationUniversityPublic Research University3 APIs43.5Nanyang Technological UniversityUniversityHigher EducationEducationSingapore3 APIs43.3Technical University of BerlinUniversityHigher EducationEducationTechnical University8 APIs43.2Karlsruhe Institute of TechnologyEducationHigher EducationUniversityTechnical University9 APIs43.0EPFLUniversityHigher EducationEducationTechnical University3 APIs42.6University College DublinUniversityHigher EducationEducationIreland1 API42.5Carnegie Mellon UniversityUniversityHigher EducationEducationUnited States6 APIs42.4Hamad Bin Khalifa UniversityUniversityHigher EducationEducationResearch1 API42.3Université libre de BruxellesUniversityHigher EducationEducationBelgium2 APIs42.0National Center for Biotechnology Information (NCBI)BioinformaticsGenomicsLife SciencesPubMed1 API41.6University of OxfordUniversityHigher EducationEducationResearch4 APIs41.4Springer NatureAcademic PublishingResearchScholarly Content2 APIs40.5University of PittsburghUniversityHigher EducationEducationUnited States1 API39.8Al-Farabi Kazakh National UniversityEducationHigher EducationUniversityResearch1 API39.7King Fahd University of Petroleum & MineralsUniversityHigher EducationEducationResearch3 APIs39.6Massey UniversityEducationHigher EducationUniversityNew Zealand2 APIs39.6University of TübingenEducationHigher EducationUniversityGermany8 APIs39.3
Thin 71 Limited public surface area
Universiti Kebangsaan MalaysiaUniversityHigher EducationEducationResearch4 APIs39.2University of LiverpoolEducationHigher EducationUniversityRussell Group14 APIs38.8Tokyo Institute of TechnologyEducationHigher EducationUniversityInstitute of Technology1 API38.7University of Los Andes ColombiaUniversityHigher EducationEducationColombia1 API38.7University of ReadingUniversityHigher EducationEducationResearch3 APIs38.1Indian Institute of Science BangaloreEducationHigher EducationUniversityIndia1 API37.9Maastricht UniversityUniversityHigher EducationEducationNetherlands10 APIs37.9Imperial College LondonUniversityHigher EducationEducationRussell Group1 API37.3Friedrich-Alexander-Universität Erlangen-NürnbergUniversityHigher EducationEducationResearch9 APIs37.1Sungkyunkwan UniversityUniversityHigher EducationEducationResearch6 APIs36.8TU DresdenUniversityHigher EducationEducationGermany7 APIs36.8Nagoya UniversityEducationHigher EducationUniversityJapan5 APIs36.7Kyushu UniversityUniversityHigher EducationEducationResearch1 API36.4Victoria University of WellingtonUniversityHigher EducationEducationNew Zealand3 APIs36.1Keio UniversityEducationHigher EducationUniversityJapan2 APIs35.8Curtin UniversityUniversityHigher EducationEducationResearch2 APIs35.5University of WaikatoEducationHigher EducationUniversityNew Zealand1 API35.5University of CalgaryEducationHigher EducationUniversityPublic Research University2 APIs35.4Queensland University of TechnologyUniversityHigher EducationEducationAustralia3 APIs35.3Hebrew University of JerusalemUniversityHigher EducationEducationResearch1 API35.1Universität HamburgEducationHigher EducationUniversityGermany1 API34.8Universiti Sains MalaysiaUniversityHigher EducationEducationPublic Research University2 APIs34.5University of BaselUniversityHigher EducationEducationSwitzerland7 APIs34.4Boston UniversityUniversityHigher EducationEducationUnited States1 API34.3Nekosia APIAnimenekonekosneko api1 API34.1Tohoku UniversityUniversityHigher EducationEducationResearch5 APIs34.0Leiden UniversityUniversityHigher EducationEducationNetherlands9 APIs33.9Western UniversityUniversityHigher EducationEducationResearch6 APIs33.3École des Ponts ParisTechUniversityHigher EducationEducationTechnical University4 APIs33.2FatcatScholarlyResearchAcademic1 API33.1University of NottinghamEducationHigher EducationUniversityRussell Group5 APIs33.0Technical University of DarmstadtEducationHigher EducationUniversityTechnical University10 APIs32.9bioRxivBiologyPreprintsResearch2 APIs32.7University of BirminghamEducationHigher EducationUniversityUnited Kingdom1 API32.6Heriot-Watt UniversityUniversityHigher EducationEducationScotland6 APIs32.5Sapienza University of RomeEducationHigher EducationUniversityItaly7 APIs32.5ACM Digital LibraryAcademicBibliographic RecordsCitationsComputing3 APIs32.4Autonomous University of BarcelonaEducationHigher EducationUniversitySpain1 API32.4medRxivHealth SciencesPreprintsResearch1 API32.4Waseda UniversityUniversityHigher EducationEducationJapan10 APIs32.4Chulalongkorn UniversityEducationHigher EducationUniversityResearch2 APIs32.1Trinity College DublinUniversityHigher EducationEducationIreland12 APIs32.1University of GlasgowUniversityHigher EducationEducationUnited Kingdom1 API32.1CrossrefCitationsDOIFundersIdentifiers1 API31.6University of St AndrewsEducationHigher EducationUniversityPublic Research University7 APIs31.5National University of SingaporeUniversityHigher EducationEducationSingapore10 APIs31.3University of SussexUniversityHigher EducationEducationUnited Kingdom5 APIs31.1University of WollongongEducationHigher EducationUniversityAustralia8 APIs30.9University of BernUniversityHigher EducationEducationSwitzerland10 APIs30.5University of ZurichEducationHigher EducationUniversityPublic Research University5 APIs30.1Vrije Universiteit AmsterdamUniversityHigher EducationEducationNetherlands7 APIs30.1Norwegian University of Science and TechnologyEducationHigher EducationUniversityResearch7 APIs29.9Sorbonne UniversityEducationHigher EducationUniversityFrance5 APIs29.8University of PaduaUniversityHigher EducationEducationItaly5 APIs29.6Aarhus UniversityUniversityHigher EducationEducationResearch5 APIs29.5Humboldt-Universität zu BerlinUniversityHigher EducationEducationResearch3 APIs29.4Qatar UniversityEducationHigher EducationUniversityQatar2 APIs29.3University of OtagoUniversityHigher EducationEducationNew Zealand5 APIs29.2Ohio State UniversityUniversityHigher EducationEducationUnited States1 API28.9Queen Mary University of LondonUniversityHigher EducationEducationResearch11 APIs28.8École Normale Supérieure de LyonUniversityHigher EducationEducationFrance8 APIs28.6Universiti Teknologi MalaysiaUniversityHigher EducationEducationPublic Research University6 APIs28.4American University of BeirutUniversityHigher EducationEducationLebanon11 APIs28.0Indian Institute of Technology KanpurEducationHigher EducationUniversityInstitute of Technology2 APIs28.0UnpaywallScholarly ArticlesResearchAcademic1 API27.7Loughborough UniversityEducationHigher EducationUniversityUnited Kingdom7 APIs27.5University of AberdeenEducationHigher EducationUniversityResearch10 APIs27.3University of BolognaEducationHigher EducationUniversityItaly12 APIs27.0Universiti Putra MalaysiaUniversityHigher EducationEducationMalaysia3 APIs26.9Indian Institute of Technology DelhiEducationHigher EducationUniversityInstitute of Technology1 API26.8UCLEducationHigher EducationUniversityUnited Kingdom6 APIs26.6
Emerging 14 Early or largely undocumented
Universiti Teknologi PETRONASUniversityHigher EducationEducationMalaysia2 APIs26.1Autonomous University of MadridUniversityHigher EducationEducationSpain9 APIs25.9University of NavarraEducationHigher EducationUniversitySpain1 API24.9University of BarcelonaUniversityHigher EducationEducationSpain10 APIs24.4University of CanterburyEducationHigher EducationUniversityNew Zealand8 APIs24.1University of ChileEducationHigher EducationUniversityPublic University10 APIs24.1Stockholm UniversityEducationHigher EducationUniversityResearch4 APIs24.0École Normale Supérieure de ParisUniversityHigher EducationEducationFrance3 APIs23.8Hokkaido UniversityEducationHigher EducationUniversityJapan10 APIs23.2Queen's University BelfastUniversityHigher EducationEducationResearch5 APIs22.0La Trobe UniversityEducationHigher EducationUniversityAustralia3 APIs19.6RMIT UniversityEducationHigher EducationUniversityResearch Data1 API18.5AcademiaCompanyAcademic Researchresearch-papersScholarly Publishing14.0PLOSScientific ArticlesResearchSearchSolr1 API13.8
Minimal 6 Almost no public developer surface
GeoCat bvGeospatialOGCWMSWFS2 APIs7.8GeoSolutions di Giannecchini Simone & C. s.a.s.GeospatialOGCWMSWFS2 APIs7.8Deutscher WetterdienstGeospatialOGCWMSWFS1 API5.9Eurac ResearchGeospatialOGCWMSWFS1 API5.9Flanders Marine InstituteGeospatialOGCWMSWFS1 API5.9Spacebel s.a.GeospatialOGCWMSWFS1 API5.9

APIs with this tag (279)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 1 Complete, well-documented, and agent-ready
UWSpace DSpace REST APIThe REST backend of UWSpace, the University of Waterloo institutional repository, running DSpace 8.4 on a U...66.5
Strong 7 Solid coverage with minor gaps
snapd REST APIThe local REST API exposed by snapd over a Unix domain socket on every Ubuntu system running snaps. Enables...64.4reposiTUm DSpace REST APIThe DSpace 7 REST layer of reposiTUm is deployed but fronted by a crawler filter: /server/api returned 503 ...56.2reposiTUm OAI-PMHOAI-PMH 2.0 interface for reposiTUm, the open-access institutional repository of TU Wien, implemented on DS...56.2MINDS@UW OAI-PMH EndpointLive OAI-PMH 2.0 harvesting endpoint for MINDS@UW, UW-Madison's institutional repository. Confirmed with ?v...56.0ExchangeRate-API Open Access APIFree no-key endpoint with once-daily rates and attribution requirement.55.6Apollo Institutional Repository API (DSpace)Cambridge's open-access research repository (Apollo) on the DSpace platform, exposing OAI-PMH metadata harv...55.2Apollo OAI-PMH metadata harvesting endpointOAI-PMH 2.0 harvesting interface for Apollo, the University's institutional repository, served from Cambrid...55.2
Developing 83 Usable, with meaningful gaps to close
Editori (journals.helsinki.fi) OAI-PMH InterfaceOAI-PMH 2.0 endpoint for Editori, the University's open publishing service (PKP Open Journal Systems). Iden...54.1Helda DSpace REST APIPublic HAL REST API for Helda, the University's open institutional repository, running DSpace 7.6.2. Discov...54.1Helda OAI-PMH Metadata InterfaceOAI-PMH 2.0 harvesting endpoint for Helda. Identify returns repositoryName "Helda" with an earliest datesta...54.1UCSB on eScholarshipUCSB’s open-access scholarship collection inside eScholarship, the University of California’s systemwide re...53.4UMN Digital Conservancy — OAI-PMH and DSpace RESTThe University of Minnesota Digital Conservancy, which also holds DRUM (Data Repository for the University ...53.4ReIn UW Institutional Repository REST APIThe Institutional Repository of the University of Warsaw (ReIn UW, Repozytorium Instytucjonalne Uniwersytet...52.9ReIn UW OAI-PMH EndpointOAI-PMH 2.0 metadata harvesting endpoint for the Institutional Repository of the University of Warsaw. verb...52.9GUPEA DSpace 8 REST APIThe HAL+JSON REST API of the same repository, on the same University host. Verified live 2026-09-01: anonym...52.6GUPEA Repository OAI-PMH 2.0 InterfaceGUPEA (Gothenburg University Publications Electronic Archive) is the Gothenburg University Library's instit...52.6DiVA OAI-PMHDiVA (Academic Archive On-line) is Uppsala University Library's institutional repository for publications a...52.5PJM Messages Public Web ServiceThe only fully anonymous PJM REST API found on the public surface. It backs the PJM Upcoming Changes page a...51.0Texas ScholarWorks DSpace REST APIPublic DSpace REST API for Texas ScholarWorks, the UT Libraries institutional repository of theses, dissert...50.8Texas ScholarWorks OAI-PMH EndpointOAI-PMH 2.0 metadata-harvesting endpoint for Texas ScholarWorks. An Identify request returns repositoryName...50.8Elsevier Pure CRIS tenancy (REST + OAI-PMH)The University's tenancy of Elsevier Pure, its Current Research Information System, reached at pure.manches...50.4KU Leuven RDR OAI-PMH Harvesting InterfaceOAI-PMH 2.0 interface of the Research Data Repository, served from KU Leuven's own host. Identify returned ...50.4HKU Scholars Hub OAI-PMHHKU Scholars Hub is the University's DSpace-based open-access institutional repository and current research...48.9Repositorio da Universidade de Lisboa — DSpace REST APIAnonymous HAL+JSON REST API of the institution's DSpace 7.6.1 repository — communities, collections, items,...48.6Repositorio da Universidade de Lisboa — OAI-PMHOAI-PMH 2.0 metadata harvesting interface over the DSpace 7.6.1 institutional open-access repository. Opera...48.6RWTH Publications OAI-PMHRWTH Publications is the institutional repository providing access to the publication output of RWTH Aachen...48.5MacSphere Institutional RepositoryMcMaster University Libraries' institutional repository of theses, dissertations and open-access research o...48.2UWA Research Repository OAI-PMHAn open, unauthenticated OAI-PMH 2.0 metadata harvesting endpoint operated by UWA on its own host. All six ...47.9Utrecht University Repository OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the Utrecht University Library institutional repository. Veri...47.4Utrecht University Repository REST APIThe DSpace 9.0 HAL/JSON REST API behind the Utrecht University Repository. Openly readable without a key: t...47.4eScholarship — UC Davis unit (tenant)UC Davis's open-access scholarly output is deposited into eScholarship, the University of California's shar...47.3Harvard DASH institutional repository (4Science-managed DSpace)DASH (Digital Access to Scholarship at Harvard) is Harvard's open-access institutional repository of 58,000...46.9RePub OAI-PMH Metadata Harvesting InterfaceOAI-PMH 2.0 harvesting interface for RePub, the Erasmus University Rotterdam institutional publication repo...46.8ResearchSpace OAI-PMH 2.0 ServiceLive OAI-PMH 2.0 metadata harvesting endpoint for ResearchSpace, the University's self-hosted DSpace instit...46.1DSpace Institutional Repository (Central Library)The IIT Bombay Central Library institutional repository, running DSpace over theses, journal articles and c...45.8IRIS PoliTO OAI-PMH Metadata Service (CINECA deployment)OAI-PMH 2.0 harvesting service over IRIS, Politecnico di Torino's institutional research repository, reacha...45.7PoliTO Public Search Web Services (people, departments, teachings, rooms)Four keyless JSON web services operated by Politecnico di Torino on its own hosts, found on 2026-08-30 in t...45.7eScholarship@McGill on Scholaris (tenant)McGill's institutional research repository, running as a tenant on Scholaris. It exposes a DSpace REST (HAL...45.1Columbia Academic CommonsColumbia University's institutional research repository, holding the scholarly output, theses and research ...44.7IEEE Xplore Open Access APIFull-text retrieval endpoint for articles designated as IEEE Open Access or chargeable open content. Return...44.4uO Research DSpace REST APIPublic DSpace 8.3 REST/HATEOAS API for uO Research (Recherche uO Research), the University of Ottawa Librar...44.4uO Research OAI-PMHOAI-PMH 2.0 metadata-harvesting provider for uO Research. Probed 2026-09-01: Identify returns repositoryNam...44.4White Rose eTheses Online OAI-PMHWhite Rose eTheses Online is the shared electronic theses repository of the same three universities, runnin...44.0White Rose Research Online OAI-PMHWhite Rose Research Online is the shared open-access outputs repository of the Universities of Leeds, Sheff...44.0PAPYRUS DSpace REST API (HAL)The DSpace 8 REST API behind PAPYRUS, answering anonymously at the HAL root and advertising the repository'...43.9PAPYRUS OAI-PMH Endpoint (institutional repository)OAI-PMH 2.0 harvesting interface for PAPYRUS, Université de Montréal's institutional repository of open-acc...43.9KURENAI OAI-PMH APIOAI-PMH 2.0 metadata harvesting interface for KURENAI, the Kyoto University Research Information Repository...43.8University of York Digital Collections Search APIThe keyless JSON search interface behind discover.york.ac.uk, the University of York's Digital Collections....43.7University of York Research Portal OAI-PMHOAI-PMH 2.0 harvesting on the University's own registrable domain. The Identify response names the reposito...43.7White Rose eTheses Online OAI-PMH (consortium)White Rose eTheses Online is the shared EPrints theses repository of York, Leeds and Sheffield, running on ...43.7White Rose Research Online OAI-PMH (consortium)White Rose Research Online is the shared EPrints institutional repository of the Universities of York, Leed...43.7ETDA OAI-PMH ProviderAn open OAI-PMH 2.0 harvesting endpoint over Penn State's Electronic Theses and Dissertations Archive, serv...43.5ScholarSphere APIPenn State's next-generation institutional repository, written by Penn State University Libraries and relea...43.5DR-NTU (Digital Repository) — OAI-PMHA fully conformant OAI-PMH 2.0 metadata harvesting endpoint over DR-NTU, serving 11 metadata formats and de...43.3OpenEmory Repository (Samvera Hyrax / ResourceSync)OpenEmory is Emory's open-access institutional repository, running Samvera Hyrax 5.2.0 on Emory infrastruct...43.3DepositOnce DSpace REST APIDSpace 9.4 REST/HAL API for DepositOnce, exposing communities, collections, items, bitstreams, discovery, v...43.2DepositOnce OAI-PMH InterfaceOpen Archives Initiative Protocol for Metadata Harvesting (OAI-PMH 2.0) endpoint for DepositOnce, TU Berlin...43.2WashU Scholarly Repository (OAI-PMH)The university's institutional repository, "WashU Scholarly Repository", serving a live OAI-PMH 2.0 interfa...43.1KITopen OAI-PMH InterfaceKITopen is KIT's central open-access institutional repository for the bibliographic data, full texts, image...43.0Re.Public@Polimi OAI-PMHOAI-PMH 2.0 harvesting endpoint for IRIS Re.Public@Polimi, the institutional research product catalogue. Li...42.9bonndoc Publication Server OAI-PMH EndpointOAI-PMH 2.0 endpoint for bonndoc, "Der Publikationsserver der Universitaet Bonn" — the university's DSpace-...42.7EPFL Infoscience Institutional RepositoryInfoscience is EPFL's institutional repository and CRIS, self-hosted on EPFL infrastructure and running DSp...42.6Research Repository UCD — OAI-PMH 2.0Keyless, anonymous OAI-PMH 2.0 metadata harvesting for UCD's open-access institutional repository. Verified...42.5KiltHub Institutional Repository (figshare) — tenantKiltHub is Carnegie Mellon's institutional repository for research data and scholarly output. The data, the...42.4Elmi Research Portal — OAI-PMHHBKU's research information system, Elmi, runs Elsevier Pure on the university's own subdomain and exposes ...42.3Manara — Qatar Research Repository (HBKU portal)HBKU's scholarly output is deposited in Manara — Qatar Research Repository, a Figshare platform operated by...42.3Aalto Research Publications API (Acris gateway)Aalto's own four-path gateway contract over Acris, its research information system, exposing research outpu...42.2Aaltodoc Repository — OAI-PMH and DSpace RESTAalto's institutional repository of theses, articles and conference publications, running Aalto-hosted DSpa...42.2DI-fusion Export APIDocumented HTTP GET service that exports the publication list of one ULB scholar (identified by matricule o...42.0DI-fusion OAI-PMH Harvesting EndpointOAI-PMH 2.0 endpoint for the DI-fusion repository. Answers verb=Identify and verb=ListMetadataFormats with ...42.0IIT Kharagpur Institutional Digital Repository OpenSearch InterfaceOpenSearch 1.1 query interface over the Central Library's Institutional Digital Repository, running DSpace ...41.9PMC OAI-PMH ServiceThe PMC OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting) service allows bulk harvesting ...41.6PMC Open Access API (OA Service)The PubMed Central Open Access API retrieves citation data, licensing details, and FTP download locations f...41.6ORCA OAI-PMH InterfaceOnline Research @ Cardiff (ORCA) is Cardiff University's own EPrints institutional repository, listed as an...41.4UCSF scholarly output via eScholarship OAI-PMHUCSF's open-access scholarly output is harvestable as a named OAI-PMH set on the University of California's...41.4ePrints Soton OAI-PMH InterfaceLive, open OAI-PMH 2.0 metadata harvesting for ePrints Soton, the University's institutional research repos...40.8ePrints Soton REST InterfaceRead-only REST interface over the ePrints Soton data model, exposing the repository's eprint, user and subj...40.8OpenUCT DSpace REST APIThe OpenUCT repository additionally exposes the DSpace 7 REST API anonymously at open.uct.ac.za/server/api,...40.6OpenUCT Institutional Repository OAI-PMHOpenUCT is the University of Cape Town's open access institutional repository, running DSpace 7.4 on UCT's ...40.6Springer Nature Open Access APIThe Open Access API from Springer Nature — 2 operation(s) for open access.40.5PubMed Central (PMC) OA APIAPIs for programmatic access to PubMed Central's Open Access content, including file validation, Open Acces...40.2ScholarlyCommons at Penn — DSpace REST APIDSpace 7.6 HAL+JSON REST API on Penn's own host. The API root returned HTTP 200 advertising dspaceName "Sch...40.1ResearchWorks Repository (DSpace REST + OAI-PMH)ResearchWorks is UW Libraries' institutional repository, running DSpace 9.2 on UW's own host. The DSpace RE...39.9ULS E-Journal Publishing — OAI-PMH 2.0 providersThe University Library System publishes dozens of open-access journals on PKP Open Journal Systems that ULS...39.8KazNU Bulletin OAI-PMH RepositoriesSeven OAI-PMH 2.0 metadata harvesting endpoints operated by Al-Farabi Kazakh National University on its own...39.7KFUPM ePrints Export & Search (JSON)Record-level and search-level JSON from the same self-hosted KFUPM ePrints repository, served without authe...39.6KFUPM ePrints OAI-PMH Repository InterfaceLive OAI-PMH 2.0 harvesting interface for the KFUPM ePrints institutional repository (EPrints 3.4.1), self-...39.6Massey Research Online DSpace REST APIHAL/JSON REST API for Massey Research Online, running DSpace 8.3. Anonymous read is permitted on the reposi...39.6Massey Research Online OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for Massey Research Online (Pātaka Rangahau), the university's DS...39.6TOBIAS-lib / Publikationssystem UB Tübingen OAI-PMHOAI-PMH 2.0 provider for the University Library's institutional publication server (TOBIAS-lib), running DS...39.3
Thin 152 Limited public surface area
UKM e-Journal System (OAI-PMH)Open Journal Systems 2.4.8.1 platform self-hosted at ejournal.ukm.my (CNAME ejournals.ukm.my), carrying the...39.2UKM Journal Article Repository (OAI-PMH) — unreachableEPrints repository of journal articles published by UKM faculties, institutes and UKM Press, registered in ...39.2UKM Learning and Research Repository (OAI-PMH)DSpace 6.3 institutional repository operated by Perpustakaan Tun Seri Lanang (UKM Library) on the universit...39.2University of Liverpool Repository EPrints RESTKeyless, read-only EPrints REST interface on the institutional repository. Verified live 2026-09-01: GET /r...38.8University of Liverpool Repository OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for the University of Liverpool Repository, an EPrints 3.4.5 open...38.8Repositorio Institucional Seneca - DSpace REST APIDSpace 7 REST API for the "Seneca" repository, under the /server/api path of the deployment. Confirmed to b...38.7Repositorio Institucional Seneca - OAI-PMHOAI-PMH metadata harvesting interface for "Seneca", the DSpace 7 institutional repository that collects the...38.7Revistas Uniandes - OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the Revistas Uniandes scholarly journal portal — the only Uni...38.7Science Tokyo Repository OAI-PMH (JAIRO Cloud tenant)OAI-PMH 2.0 endpoint for the institution's tenancy on JAIRO Cloud — the successor repository named in the T...38.7T2R2 Research Repository OAI-PMHOAI-PMH 2.0 metadata harvesting interface for T2R2, the Science Tokyo / Tokyo Tech Research Repository, ope...38.7CentAUR OAI-PMH Metadata APIOAI-PMH 2.0 metadata harvesting interface for CentAUR, the Central Archive at the University of Reading — t...38.1ePrints@IISc OAI-PMHePrints@IISc is the open-access institutional repository of IISc research publications, established in 2002...37.9ETD@IISc DSpace 6 REST APIRead-only REST API of ETD@IISc, the Electronic Theses and Dissertations repository IISc runs on DSpace 6 at...37.9Journal of the Indian Institute of Science OAI-PMHLive OAI-PMH 2.0 metadata-harvesting provider for the Journal of the Indian Institute of Science, served fr...37.9Spiral OAI-PMH Metadata Harvesting EndpointA fully functional OAI-PMH 2.0 harvesting interface — the standards-based way Imperial's research outputs r...37.3Spiral Open Access Repository (DSpace 7 REST API)Imperial's institutional open-access repository, exposed over the DSpace 7 HAL+JSON REST API at https://spi...37.3OPEN FAU DSpace REST APIThe REST/HAL API of OPEN FAU, FAU's DSpace 7.4 institutional repository, run by the University Library on F...37.1OPEN FAU OAI-PMH Metadata ServiceOpen Archives Initiative Protocol for Metadata Harvesting 2.0 service for OPEN FAU, the university's open-a...37.1OPARA OAI-PMH Harvesting InterfaceThe standards-based harvesting interface for OPARA — how TU Dresden's research data reaches OpenAIRE, BASE,...36.8OPARA Research Data Repository REST APIThe DSpace 7.6.2 REST API of OPARA, the open-access research-data repository ZIH operates for TU Dresden an...36.8Qucosa TU Dresden OAI-PMH (Institutional Document Server)The OAI-PMH 2.0 harvesting interface for the TU Dresden instance of Qucosa, the Saxon document and publicat...36.8NAGOYA Repository OAI-PMH (NII WEKO3 / JAIRO Cloud tenant)OAI-PMH 2.0 metadata harvesting interface for the NAGOYA Repository, Nagoya University's institutional repo...36.7Archive ouverte UNIGE OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for the Archive ouverte UNIGE institutional repository, exposing ...36.6Kyushu University Institutional Repository (QIR) OAI-PMHLive OAI-PMH 2.0 metadata harvesting interface for the Kyushu University Institutional Repository (QIR) and...36.4Project MUSE OAI-PMH RepositoryProject MUSE, operated by Johns Hopkins University Press, exposes an OAI-PMH 2.0 harvesting endpoint that a...36.3Open Access Repository (Figshare tenancy)The university's Open Access institutional repository is a Figshare portal running on the institution's own...36.1eScholarship Repository and OAI-PMH (California Digital Library tenant)eScholarship is the University of California's open-access publishing platform and institutional repository...35.9Keio Media Center Digital Collections IIIF APIThe Keio University Media Center serves its digitised special collections as IIIF on two hosts it owns: dco...35.8KOARA OAI-PMH Metadata APIKOARA (KeiO Associated Repository of Academic resources) is Keio University's institutional repository, rel...35.8Scholarworks@UAEU OAI-PMH Repository EndpointOAI-PMH 2.0 metadata harvesting endpoint for Scholarworks@UAEU, the university's open-access institutional ...35.8Vanderbilt Institutional Repository (VUIR)Self-hosted DSpace 9.1 institutional repository on Vanderbilt's own domain and infrastructure. The HAL REST...35.7Vanderbilt Institutional Repository OAI-PMHOAI-PMH 2.0 harvesting endpoint for the Vanderbilt Institutional Repository. Identify returns repositoryNam...35.7Vanderbilt Television News Archive APIPublic read API behind tvnews.vanderbilt.edu, self-identifying as the "TVNA Serverless API" v1.0.0. Search,...35.7COKI Open Access Dashboard APICurtin's most substantial self-engineered API. Keyless, CORS-open JSON serving open-access performance stat...35.5Curtin Curate Research Repository (Figshare tenant)Curtin's institutional research repository, formerly espace on Ex Libris, now running on Figshare at curate...35.5Research Commons DSpace REST APIDSpace 7.6.5 REST API backing Research Commons, giving programmatic access to communities, collections, ite...35.5Research Commons OAI-PMHOAI-PMH 2.0 metadata harvesting interface for Research Commons, the university's open-access institutional ...35.5PRISM Institutional Repository (DSpace on Scholaris)PRISM is the University of Calgary's institutional repository — the university's content, the university's ...35.4University of Calgary Journal Hosting (OJS) OAI-PMHThe university's own Open Journal Systems 3.4.0.10 installation, hosting UCalgary scholarly journals and ex...35.4QUT ePrints OAI-PMH 2.0Public, unauthenticated OAI-PMH 2.0 metadata harvesting interface for QUT's institutional research reposito...35.3Shnaton Course Catalog APIThe public JSON API behind shnaton.huji.ac.il, the Hebrew University's official course catalog. Faculties, ...35.1E-Dissertationen (ediss.sub.hamburg) OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for the DSpace-based institutional repository of electronic disse...34.8Hamburg University Press OAI-PMHOAI-PMH 2.0 interface of Hamburg University Press, the open-access publishing house of the Staats- und Univ...34.8HUP Journal Server OAI-PMHOAI-PMH 2.0 interface of the journal server of Hamburg University Press. Verified live 2026-09-01: reposito...34.8IRUA OAI-PMH Metadata InterfaceOpen Archives Initiative Protocol for Metadata Harvesting 2.0 interface for the Institutional Repository Un...34.8Khazna OAI-PMH RepositoryOAI-PMH 2.0 metadata harvesting endpoint for Khazna, Khalifa University's research portal, at https://khazn...34.8Open-Access-Portal Universität HamburgOpen Access discovery portal aggregating freely available publications, research data, teaching materials a...34.8ZFDM Research Data Repository APIRead API of the ZFDM Repository (Forschungsdatenrepositorium), operated by Universität Hamburg's Zentrum fü...34.8USM Repository EPrints REST and ExportAnonymous read interface to Repository@USM beyond OAI-PMH, verified route by route on 2026-09-01. /rest/ ex...34.5USM Repository OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for Repository@USM, the EPrints 3.3.16 institutional repository U...34.5edoc DSpace REST APIPublic DSpace REST API for "edoc", the open-access institutional repository of the University of Basel, run...34.4edoc OAI-PMHOAI-PMH 2.0 metadata harvesting interface for edoc. Identify reports repositoryName "edoc: Open Access Repo...34.4OpenBU Repository — OAI-PMH and DSpace REST (Atmire-operated)OpenBU is Boston University Libraries' open-access institutional repository. The content, the collections a...34.3jMorp GraphQL API (Tohoku Medical Megabank Organization)Public, anonymous, read-only GraphQL API for jMorp — the Japanese Multi Omics Reference Panel published by ...34.0TOUR Institutional Repository OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for TOUR (TOhoku University Repository). The collection, the depar...34.0White Rose Research Online (OAI-PMH) — consortium tenancyRELATIONSHIP, NOT A CONTRACT. Leeds' scholarly publications repository is White Rose Research Online, a sha...34.0Scholarly Publications OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for Leiden University Scholarly Publications, the Islandora-based ...33.9Scholarship@Western OAI-PMH 2.0 provider (tenant)OAI-PMH 2.0 metadata harvesting for Western University's Open Repository. Identify returns repositoryName "...33.3Scholarship@Western on Scholaris — DSpace REST API (tenant)The HAL+JSON REST API of Western University's Open Repository, reachable anonymously at https://uwo.scholar...33.3HAL — ENPC Open-Access Collection (tenant)ENPC's institutional open-access repository is the ENPC collection inside HAL, the French national open arc...33.2Repository@Nottingham DSpace REST APIKeyless, read-only HAL+JSON REST API of the university's self-hosted DSpace 8.2 / DSpace-CRIS (cris-2024.02...33.0Repository@Nottingham OAI-PMH (DSpace, institution-hosted)OAI-PMH 2.0 metadata-harvesting provider of the institution-hosted DSpace repository. Verified live 2026-08...33.0Repository@Nottingham OAI-PMH (Worktribe tenant)OAI-PMH 2.0 interface for the Worktribe-hosted Repository@Nottingham research-outputs showcase. Confirmed l...33.0TUdatalib DSpace REST APIREST API of TUdatalib, the institutional research-data repository of TU Darmstadt. Verified live 2026-09-01...32.9TUjournals REST API (Janeway tenancy)TUjournals is TU Darmstadt's open-access journal platform, publisher of record "Universitaets- und Landesbi...32.9tuprints OAI-PMH (EPrints)tuprints is the open-access publication repository of TU Darmstadt, on the institution's own host and regis...32.9ePapers Repository (EPrints OAI-PMH)OAI-PMH 2.0 metadata harvesting interface for the University of Birmingham ePapers EPrints repository, hold...32.6UBIRA eTheses (EPrints OAI-PMH)OAI-PMH 2.0 metadata harvesting interface for the University of Birmingham eTheses EPrints repository, hold...32.6Heriot-Watt Research Output Service (ROS)The university's own institutional repository of theses and research outputs, running DSpace 8 on www.ros.h...32.5Heriot-Watt Research Portal (Elsevier Pure)Heriot-Watt's public research information portal — publications, projects, research data, activities and re...32.5Open Research Exeter (ORE) - Figshare TenancyOpen Research Exeter is Exeter's institutional research repository and it is a Figshare tenancy, not instit...32.5Riviste Online SApienza (R.O.SA) OAI-PMHSite-wide OAI-PMH 2.0 provider over Riviste Online SApienza, the university's open-access journal publishin...32.5University of Exeter News WordPress REST APInews.exeter.ac.uk is Exeter's own news and press-release site and exposes the WordPress REST API openly at ...32.5ACM Digital Library Content Retrieval APIIndividual publications, conference papers, and journal articles in the ACM Digital Library are accessible ...32.4DDD — Dipòsit Digital de Documents de la UAB (OAI-PMH 2.0)OAI-PMH 2.0 harvesting endpoint for UAB's institutional repository of theses, articles, preprints, postprin...32.4DIAL.mem -- DSpace-CRIS REST APIDIAL.mem is UCLouvain's institutional repository for master's theses, part of the DIAL (Digital Access to L...32.4DIAL.mem OAI-PMHOAI-PMH 2.0 harvesting endpoint for DIAL.mem, UCLouvain's master's-thesis repository. Identify returns repo...32.4DIAL.pr (BOREAL) -- DSpace-CRIS REST APIDIAL.pr, branded BOREAL, is UCLouvain's institutional repository for the research publications of its profe...32.4DIAL.pr OAI-PMHOAI-PMH 2.0 harvesting endpoint for DIAL.pr, UCLouvain's research-publications repository. Identify returns...32.4OER-UCLouvain OAI-PMHOER-UCLouvain is the institution's open educational resources repository, running DSpace JSPUI on oer.uclou...32.4Revistes UAB — Open Journal Systems (per-journal OAI-PMH 2.0)UAB self-hosts the journal platform on which its scholarly journals are published, and each journal exposes...32.4Waseda University Repository (OAI-PMH)OAI-PMH 2.0 metadata harvesting for the Waseda University Repository. The collection, the administrative co...32.4PubMed Central OA APIThe PMC Open Access API provides citation data, license information, and download links for Open Access art...32.3CaltechAUTHORS REST API and OAI-PMHCaltech's institutional publications repository, also on self-hosted InvenioRDM. Exposes the same REST reco...32.1Chula Digital Collections (bepress Digital Commons tenant)The university's open-access journals, theses and ETD platform, and the only working OAI-PMH endpoint in th...32.1Chula DigiVerse — Institutional Digital RepositoryThe university's digital preservation platform for theses, dissertations, rare books, multimedia and digiti...32.1eDeposit Ireland — OAI-PMH and DSpace RESTIreland's national legal-deposit digital repository, administered by the Library of Trinity College Dublin ...32.1Enlighten EPrints REST APIAn anonymous read interface over the Enlighten repositories that the University of Glasgow does not documen...32.1Enlighten Publications OAI-PMHOAI-PMH 2.0 metadata harvesting over Enlighten, the University of Glasgow's EPrints institutional repositor...32.1Enlighten Theses OAI-PMHOAI-PMH 2.0 metadata harvesting over Enlighten Theses, the University of Glasgow's electronic theses reposi...32.1TARA OAI-PMH (Trinity's Access to Research Archive)TARA is Trinity's open-access institutional repository, a DSpace deployment on Trinity's own host (www.tara...32.1St Andrews Research Repository OAI-PMHOAI-PMH 2.0 endpoint for the DSpace-based St Andrews Research Repository, the University's open-access repo...31.5RITEC Institutional Repository — DSpace REST APIRITEC (repositorio.tec.mx) is the institution's DSpace 8.0 institutional repository, holding 86,310 discove...31.4RITEC Institutional Repository — OAI-PMH EndpointOAI-PMH 2.0 endpoint for RITEC, verified live on 2026-09-01. Identify returns repositoryName "Repositorio I...31.4ScholarBank@NUS DSpace REST APIThe HAL-style REST API of ScholarBank@NUS, the university's institutional repository — communities, collect...31.3ScholarBank@NUS OAI-PMH InterfaceOAI-PMH 2.0 metadata harvesting endpoint for ScholarBank@NUS, advertising twelve metadata formats including...31.3Adelaide Research & Scholarship OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for the "Adelaide Research & Scholarship" repository, on the same ...31.2Adelaide Research & Scholarship REST APIDSpace 7.6.1 HAL/JSON REST API for the University of Adelaide institutional repository "Adelaide Research &...31.2University of Sussex Research Data Repository (Figshare tenant)Sussex's institutional research repository, a Figshare tenant at sussex.figshare.com (CNAME to figshare.com...31.1Research Online (Figshare tenancy)Research Online is UOW's open access institutional repository, and since its 2025 platform migration it is ...30.9Sydney eScholarship Repository (institutional repository, OAI-PMH)Sydney eScholarship is the university's own institutional repository, running on the university-owned usyd....30.7Bern Open Publishing (BOP Serials) OAI-PMH EndpointOAI-PMH 2.0 endpoint for Bern Open Publishing, the University Library's diamond open-access journal platfor...30.5BORIS Portal OAI-PMH EndpointOAI-PMH 2.0 metadata-harvesting endpoint for BORIS Portal, the University of Bern's institutional repositor...30.5VU Research Portal OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the Vrije Universiteit Amsterdam Repository, served from the ...30.1ZORA DSpace REST APIZORA runs DSpace 8.0 and exposes the standard DSpace REST API (application/hal+json) for programmatic disco...30.1ZORA Repository OAI-PMHThe Zurich Open Repository and Archive (ZORA) is UZH's institutional repository for the peer-reviewed resea...30.1NTNU Open Access Journals OAI-PMHNTNU runs its own Open Journal Systems installation, "NTNU Open Access Journals", on its own registrable do...29.9NVA National Research Archive (NTNU Open successor)Nasjonalt vitenarkiv (NVA) is the Sikt-operated national open research archive that absorbed NTNU's institu...29.9HAL Search API — SORBONNE-UNIVERSITE collectionThe HAL Solr search API scoped to Sorbonne University's collection at https://api.archives-ouvertes.fr/sear...29.8HAL Sorbonne Universite Open Archive — OAI-PMH (Sorbonne scope)Sorbonne University's open archive of scholarly publications, harvestable over OAI-PMH 2.0 at the Sorbonne-...29.8Docta Complutense Repository API (DSpace 7)Docta Complutense is UCM's open-access institutional repository, migrated in 2023 to DSpace 7 and self-host...29.6IRIS UNIPD OAI-PMHOAI-PMH 2.0 harvesting endpoint for IRIS UNIPD, the University of Padua's institutional research catalogue ...29.6Padua Theses and Dissertations OAI-PMHOAI-PMH 2.0 harvesting endpoint for the University of Padua theses and dissertations archive. Live and anon...29.6Research Data Unipd OAI-PMHOAI-PMH 2.0 harvesting endpoint for Research Data Unipd, the EPrints-based research-data archive of the Uni...29.6Aarhus University OAI-PMH Metadata ServiceOpen Archives Initiative Protocol for Metadata Harvesting 2.0 service for Aarhus University's research reco...29.5edoc-Server DSpace REST APIPublic, unauthenticated read API of the edoc-Server, the Open Access institutional repository of Humboldt-U...29.4edoc-Server OAI-PMH 2.0 InterfaceOAI-PMH 2.0 metadata harvesting endpoint for the edoc institutional repository, on HU's own host. ?verb=Ide...29.4GenderOpen Repositorium — HU DOI tenancyGenderOpen is the shared open-access repository for gender studies run jointly by the Freie Universität Ber...29.4LAUDATIO-Repository REST APIDocumented, versioned, public read API of the LAUDATIO-Repository (Long-term Access and Usage of Deeply Ann...29.4Scholarly Commons @ CWRU — OAI-PMH 2.0 providerAn open OAI-PMH 2.0 metadata provider on CWRU's own host. Identify reports repositoryName "Scholarly Common...29.4ERA — Education and Research Archive (on Scholaris)ERA is the University of Alberta's institutional repository. It was the library's own Samvera/Hyrax applica...29.3QSpace Institutional Repository (Open Repository tenant)QSpace is Qatar University's institutional repository — 66,950 records, DSpace 7.6, administered by Qatar U...29.3QU Press Open Journal System OAI-PMH APIQatar University Press self-hosts Open Journal Systems 3.3.0.7 at journals.qu.edu.qa and exposes an anonymo...29.3OUR Archive OAI-PMH Metadata — Ex Libris Esploro tenancyOUR Archive (Otago University Research Archive) is the University's institutional research repository. The ...29.2UPF Digital Repository OAI-PMH EndpointOAI-PMH 2.0 metadata harvesting endpoint for e-Repositori, on UPF's own host. Probed 2026-09-01: verb=Ident...29.2UPF Digital Repository REST API (DSpace 7)e-Repositori (Repositori digital de la UPF) is UPF's open-access institutional repository, self-hosted on U...29.2Knowledge Bank DSpace REST APIREST API for the Knowledge Bank, Ohio State University Libraries' DSpace 7.6 institutional repository. Expo...28.9Knowledge Bank OAI-PMH InterfaceOAI-PMH 2.0 metadata harvesting endpoint for the Knowledge Bank institutional repository, supporting the st...28.9Queen Mary Research Online (QMRO) — DSpace 8.4 REST APIQueen Mary's open-access institutional repository runs DSpace 8.4 and exposes the standard DSpace REST API ...28.8HAL OAI-PMH — ens-lyon collectionOAI-PMH 2.0 harvesting endpoint scoped to ENS de Lyon's named collection on HAL, the French national open a...28.6HAL Search API — ens-lyon collectionHAL's Solr-backed search API scoped to the ENS de Lyon collection. A probe of /search/ens-lyon/?q=*:*&wt=js...28.6UTM Institutional Repository (UTM-IR) EPrints OAI-PMH — unreachableThe older EPrints institutional repository, registered with ROAR (record 1358), OpenDOAR and Sherpa (record...28.4UTM Press Journals (Open Journal Systems) — OAI-PMHPenerbit UTM Press runs the university's journal estate on PKP Open Journal Systems at journals.utm.my (161...28.4UTMIK Repository (DSpace-CRIS) — OAI-PMH and RESTUTM's institutional knowledge repository, running DSpace-CRIS on utmik.utm.my (161.139.22.165, inside UTM's...28.4AUB ScholarWorks DSpace REST APIAnonymous HAL/JSON REST API for AUB ScholarWorks, AUB's institutional repository, running DSpace 9.1 on AUB...28.0AUB ScholarWorks OAI-PMHOAI-PMH 2.0 metadata harvesting endpoint for AUB ScholarWorks. Identify returns repositoryName "AUB Scholar...28.0IIT Kanpur PKK Library OAI-PMH APIOAI-PMH 2.0 metadata-harvesting endpoint for the P.K. Kelkar Library catalog, operated on the institution's...28.0Loughborough University Library Catalogue API (Koha)The REST API of Loughborough University Library's Koha integrated library system, served from the universit...27.5Loughborough University Research Repository (figshare tenancy)The Loughborough Research Repository is the university's institutional repository for all research outputs,...27.5AURA DSpace REST API (tenancy on Edinburgh IS infrastructure)The Aberdeen University Research Archive (AURA) runs DSpace 8.1-SNAPSHOT and exposes a public HATEOAS REST ...27.3AURA OAI-PMH Metadata Harvesting (tenancy on Edinburgh IS infrastructure)AURA's OAI-PMH 2.0 endpoint, repositoryName "Aura", repositoryIdentifier aura.abdn.ac.uk, adminEmail aura-m...27.3Elsevier Pure CRIS tenancy (research portal, REST + OAI-PMH)The University's tenancy of Elsevier Pure, its current research information system, published as "The Unive...27.3AlmaDL Journals OAI-PMHSite-wide OAI-PMH 2.0 provider over AlmaDL Journals, the university's open-access journal publishing platfo...27.0AMS Acta Institutional Repository OAI-PMHOAI-PMH 2.0 metadata-harvesting provider for AMS Acta, the AlmaDL institutional research repository, self-h...27.0AMS Tesi di Dottorato (Doctoral Theses) OAI-PMHSecond, distinct OAI-PMH 2.0 provider run by AlmaDL over AMS Tesi di Dottorato, the university's doctoral t...27.0AMS Tesi di Laurea (Graduate Theses) OAI-PMHThird AlmaDL OAI-PMH 2.0 provider, over AMS Tesi di Laurea, the university's graduate and undergraduate the...27.0MyAgric — Malaysian Agricultural Repository OAI-PMH 2.0OAI-PMH 2.0 metadata harvesting for MyAgric, the Malaysian Agricultural Repository, a national-scope agricu...26.9PSASIR Institutional Repository — OAI-PMH 2.0OAI-PMH 2.0 metadata harvesting for the Universiti Putra Malaysia Institutional Repository, running EPrints...26.9IIT Delhi Institutional Repository DSpace REST APIThe IIT Delhi Central Library institutional repository runs on DSpace 8.0 and exposes the standard DSpace R...26.8IIT Delhi Institutional Repository OAI-PMHOAI-PMH 2.0 metadata-harvesting interface for the IIT Delhi DSpace 8 institutional repository, on the insti...26.8UCL Discovery — OAI-PMHUCL Discovery is UCL's open-access institutional repository of research outputs, running EPrints on UCL's o...26.6King Abdulaziz University Journals (Digital Commons tenancy)KAU's Scientific Publishing Centre journals delivered on Elsevier's Digital Commons (bepress) platform, wit...26.4
Emerging 28 Early or largely undocumented
UTP Scholarly Publication RepositoryThe second EPrints repository UTP runs, holding staff publication records back to 2010. Open OAI-PMH 2.0, a...26.1UTPedia Institutional RepositoryUTPedia ("UTP Electronic and Digital Intellectual Asset") holds theses, dissertations and final-year projec...26.1Biblos-e Archivo OAI-PMH EndpointOAI-PMH 2.0 metadata-harvesting endpoint for Biblos-e Archivo. Identify returns repositoryName "Biblos-e Ar...25.9Biblos-e Archivo REST API (DSpace 7)HAL-based REST API for Biblos-e Archivo, UAM's institutional repository, running DSpace 7.6.5. Anonymously ...25.9Portal de Revistas Electrónicas de la UAM — OAI-PMH EndpointOAI-PMH 2.0 endpoint over the university's Open Journal Systems 3.3.0.6 installation, which hosts UAM's ele...25.9TU/e Research Portal OAI-PMHLive OAI-PMH 2.0 harvesting interface for the TU/e Research Portal, served by Elsevier Pure at TU/e's own p...25.7UI Scholars Hub OAI-PMH (bepress Digital Commons tenant)OAI-PMH 2.0 metadata-harvesting interface for UI Scholars Hub, the university's institutional research repo...25.5USC Figshare Research Repository (Tenant)USC Libraries offers Figshare to USC researchers as its data-output repository for datasets, posters and pr...25.0DADUN Institutional Repository (OAI-PMH)DADUN (Deposito Academico Digital de la Universidad de Navarra) is the university's open-access institution...24.9Revistas Cientificas OAI-PMH (Servicio de Publicaciones)Live OAI-PMH 2.0 metadata harvesting interface over the university press's journal portfolio, running on a ...24.9Crossref membership — Edicions de la Universitat de Barcelona (member 17854)The University of Barcelona press is a Crossref member in its own right: member id 17854, DOI prefixes 10.1...24.4Revistes Científiques de la UB (OJS) — OAI-PMH 2.0Open Journal Systems platform self-hosted by UB at revistes.ub.edu, publishing the university's scholarly j...24.4Canterbury Figshare Research Data Repository (tenant)canterbury.figshare.com is the University of Canterbury's institutional research data repository, a tenancy...24.1Repositorio Académico DSpace REST APIThe DSpace 6 REST API on the University of Chile institutional repository, not catalogued before this run. ...24.1Repositorio Académico OAI-PMHOAI-PMH 2.0 provider on the University of Chile institutional repository (Repositorio Académico), managed b...24.1UC Research Repository OAI-PMHOAI-PMH 2.0 metadata harvesting interface for the UC Research Repository, a self-hosted DSpace 7 institutio...24.1DiVA Institutional Repository (OAI-PMH)Stockholm University's publication records are harvestable over OAI-PMH 2.0 from its DiVA instance at su.di...24.0Stockholm University Research Data Repository (Figshare tenancy)su.figshare.com is Stockholm University's research data repository, running on Figshare. The data, the DOIs...24.0HAL-ENS Open Archive — ENS-PARIS collectionENS research output is deposited into the ENS-PARIS collection of HAL, the French national open archive ope...23.8HUSCAP XML SitemapsPublicly crawlable XML sitemap index for HUSCAP, the Hokkaido University Collection of Scholarly and Academ...23.2JaLC DOI Prefix 10.14943Hokkaido University registers DOIs through JaLC, the Japan Link Center, under prefix 10.14943. Confirmed fr...23.2Queen's University Belfast Research Portal — DataCite repository clientQueen's University Belfast is a DataCite consortium organization (provider jxtg) and has operated a registe...22.0Queen's University Belfast Research Portal — OAI-PMH harvesting endpointLive OAI-PMH 2.0 metadata harvesting endpoint for the QUB Research Portal. Identify returns repositoryName ...22.0Bridges — Monash Research Repository (Figshare tenant)Monash's institutional research data repository, "Bridges", operating on the Figshare platform. bridges.mon...21.5CityUHK Scholars OAI-PMHPublic OAI-PMH 2.0 endpoint for CityUHK Scholars, the university's research information system and institut...20.8Open Research Newcastle (Figshare) — TENANTThe university's open-access institutional repository and research-data store, running on the Figshare plat...20.4OPAL (Open @ La Trobe) Research RepositoryOPAL is La Trobe's open-access research repository — its publications, theses, datasets and DOIs — deployed...19.6RMIT Research Repository (Esploro)The RMIT Research Repository is RMIT University's open access research portal, powered by Clarivate's Esplo...18.5
Minimal 8 Almost no public developer surface
GeoCat bv OGC API - FeaturesA modern OGC API - Features endpoint alongside the classic OGC web services. Verified anonymously on 2026-0...7.8GeoCat bv OGC Web Services (WMS / WFS)OGC-standard web services served from a GeoServer instance. Verified anonymously on 2026-08-20: a WMS 1.3.0...7.8GeoSolutions OGC API - FeaturesA modern OGC API - Features endpoint alongside the classic OGC web services. Verified anonymously on 2026-0...7.8GeoSolutions OGC Web Services (WMS / WFS)OGC-standard web services served from a GeoServer instance. Verified anonymously on 2026-08-20: a WMS 1.3.0...7.8Deutscher Wetterdienst OGC Web Services (WMS / WFS)OGC-standard web services served from a GeoServer instance. Verified anonymously on 2026-08-20: a WMS 1.3.0...5.9Eurac Research OGC Web Services (WMS / WFS)OGC-standard web services served from a GeoServer instance. Verified anonymously on 2026-08-20: a WMS 1.3.0...5.9Flanders Marine Institute OGC Web Services (WMS / WFS)OGC-standard web services served from a GeoServer instance. Verified anonymously on 2026-08-20: a WMS 1.3.0...5.9Spacebel s.a OGC Web Services (WMS / WFS)OGC-standard web services served from a GeoServer instance. Verified anonymously on 2026-08-20: a WMS 1.3.0...5.9

Companies reaching this through an API (61)

These companies publish an API, specification or operation carrying “Open Access” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Aalto University California Institute of Technology Canonical Cardiff University Case Western Reserve University City University of Hong Kong Columbia University Complutense University of Madrid Eindhoven University of Technology Emory University ExchangeRate-API Harvard University IEEE Xplore Indian Institute of Technology Bombay Indian Institute of Technology Kharagpur Johns Hopkins University Khalifa University King Abdulaziz University KU Leuven McGill University Monash University National Institutes of Health (NIH) PJM Interconnection Politecnico di Milano Politecnico di Torino PubMed Tecnológico de Monterrey UCLouvain United Arab Emirates University Universitat Pompeu Fabra University of Adelaide University of Alberta University of Antwerp University of Auckland University of Bonn University of California, Berkeley University of California, Davis University of California, San Francisco University of California, Santa Barbara University of Cape Town University of Exeter University of Geneva University of Gothenburg University of Helsinki University of Indonesia University of Leeds University of Manchester University of Minnesota University of Newcastle Australia University of Pennsylvania
Show all 61 companies ↓
University of Southampton University of Southern California University of Sydney University of Texas at Austin University of Warsaw University of Washington University of Waterloo University of Western Australia University of Wisconsin-Madison Vanderbilt University Washington University in St. Louis

Score breakdown

Frequency
70.3
log-scaled weighted occurrences
Breadth
3.6
spread across providers
Quality lift
39.1
mean composite of providers using it
Cohesion
68.0
strength of nearest seed neighbor

Related tags

OAI-PMH 154 co-occurrences Identity Federation 155 co-occurrences University 165 co-occurrences SAML 152 co-occurrences Shibboleth 124 co-occurrences Research Data 126 co-occurrences Higher Education 166 co-occurrences Research Repository 109 co-occurrences

Where this tag comes from

Api tag278
Provider tag132
Openapi tag3
Openapi op tag9

Cohort brief

Auto-generated

The 132 providers in the APIs.io catalog tagged Open Access, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
132
all scored
Mean Kin Score
34.4
+10.5 vs catalog 23.9
Mean Agent Readiness
16.7
+4.7 vs catalog 12
Spread
5.9–65.2
median 34.1 · σ 10.6
How the 132 split by band
Exemplar 0Strong 4Developing 37Thin 71Emerging 14Minimal 6
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Access Clarity 39.4 26.5 +12.9 132
Contract Quality 29 19.8 +9.2 132
Operational Transparency 21.8 14 +7.8 132
Discoverability 68.7 61.2 +7.5 132
Contract Governance 12.6 6.4 +6.2 132
Developer Ergonomics 25.9 23.4 +2.5 132

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 2% 10% -8
MCP server (first-party) 2% 13% -11
Agent Skills 0% 0% 0
OAuth scopes 23% 11% +12
Security 95% 97% -2
Arazzo workflows 0% 2% -2
Governance rules 41% 14% +27

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Delft University of Technology 65.2
  2. 2 TU Wien 56.2
  3. 3 University of Cambridge 55.2
  4. 4 Australian National University 54.3
  5. 5 Uppsala University 52.5
  6. 6 arXiv 51.5
  7. 7 Figshare 51.1
  8. 8 Seoul National University 50.7
  9. 9 University of Tokyo 49.6
  10. 10 Dryad 49.5
Top by Agent Readiness
  1. 1 Queensland University of Technology 37.3
  2. 2 DeSci Labs 36.8
  3. 3 Massey University 33.3
  4. 4 Figshare 33.1
  5. 5 Smithsonian Institution 32.5
  6. 6 Unpaywall 32.5
  7. 7 University of Calgary 32.4
  8. 8 Carnegie Mellon University 32.1
  9. 9 University of Waikato 31.3
  10. 10 Dryad 30.6
All 132 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 15 September 2026, across 27661 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This tag 
curl "https://apis.io/api/v1/tags/open-access"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/open-access"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/open-access/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

Discovery needs no key. Ratings and market analysis are Pro.

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