canonical · -0.3 capability

OAI-PMH

Score 41.3 / 100 161 providers +62 via APIs 302 APIs Search apis.io →

Business capabilities this tag reaches

Providers using this tag (161)

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

Developing 46 Usable, with meaningful gaps to close

Thin 92 Limited public surface area

Emerging 22 Early or largely undocumented

Minimal 1 Almost no public developer surface

inspirehep.netPublic APIsScholarlyCitations1 API3.9

APIs with this tag (302)

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 →

Strong 1 Solid coverage with minor gaps

UWSpace OAI-PMH EndpointThe OAI-PMH 2.0 metadata harvesting endpoint for UWSpace, the University of Waterloo institutional reposito...60.9

Developing 98 Usable, with meaningful gaps to close

Thin 158 Limited public surface area

Emerging 45 Early or largely undocumented

Companies reaching this through an API (62)

These companies publish an API, specification or operation carrying “OAI-PMH” 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 American University of Beirut Boston University Cardiff University Carnegie Mellon University Cornell University Dartmouth College EPFL ETH Zurich – Swiss Federal Institute of Technology Georgia Institute of Technology Hamad Bin Khalifa University Hong Kong Baptist University Imperial College London Indian Institute of Technology Bombay Indian Institute of Technology Delhi King Abdulaziz University Kyoto University La Trobe University Lancaster University Loughborough University McGill University McMaster University National Tsing Hua University National University of Singapore Newcastle University Norwegian University of Science and Technology Ohio State University Pennsylvania State University Politecnico di Torino Princeton University PubMed Rice University Sorbonne University Stockholm University Technical University of Berlin Technical University of Munich Texas A&M University UCL University of California, Davis University of California, Los Angeles University of California, San Francisco University of California, Santa Barbara University of Cambridge University of Hong Kong University of Manchester University of Melbourne University of Minnesota University of New South Wales University of North Carolina at Chapel Hill University of Sydney

Show all 62 companies ↓

University of Texas at Austin University of Toronto University of Warsaw University of Warwick University of Washington University of Waterloo University of Wisconsin-Madison Uppsala University Vanderbilt University Wageningen University & Research Waseda University Yale University

Score breakdown

Frequency

72.8

log-scaled weighted occurrences

Breadth

4.2

spread across providers

Quality lift

42.0

mean composite of providers using it

Cohesion

91.0

strength of nearest seed neighbor

Where this tag comes from

Api tag302

Provider tag161

Openapi tag46

Openapi op tag53

Cohort brief

Auto-generated

The 160 providers in the APIs.io catalog tagged OAI-PMH, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

160

of 161 in the catalog

Mean Kin Score

34.3

+11.4 vs catalog 22.9

Mean Agent Readiness

18.1

+6.2 vs catalog 11.9

Spread

19.7–52.6

median 33.3 · σ 7.5

How the 160 split by band

Exemplar 0Strong 0Developing 45Thin 93Emerging 22Minimal 0

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Contract Quality	33.2	17.6	+15.6	160
Access Clarity	40.2	26.5	+13.7	160
Discoverability	66.7	58.1	+8.6	160
Operational Transparency	21.8	13.7	+8.1	160
Contract Governance	13.9	6.3	+7.6	160
Developer Ergonomics	28.6	23.2	+5.4	160

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

Artifact	This cohort	Catalog	Difference
MCP server (any)	0%	14%	-14
MCP server (first-party)	1%	12%	-11
Agent Skills	0%	0%	0
OAuth scopes	26%	11%	+15
Security	100%	98%	+2
Arazzo workflows	0%	2%	-2
Governance rules	44%	14%	+30

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

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/oai-pmh"

All tags

curl "https://apis.io/api/v1/tags?limit=25"

As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/oai-pmh"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/oai-pmh/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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