emerging · 0.0 capabilitymarket schemaindustry

Linked Data

Score 22.0 / 100 30 providers 27 APIs Search apis.io →
Variants seen in the corpus: Linked DataLinkeddata

Providers using this tag (30)

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

Strong 3 Solid coverage with minor gaps
WikidataKnowledge GraphOpen DataSemantic Web1 API60.8Microsoft AzureAPI ManagementCloudCloud ComputingEnterprise697 APIs57.6HM Land RegistryReal-EstateUnited KingdomLand RegistryOpen Data11 APIs56.9
Developing 12 Usable, with meaningful gaps to close
Uppsala UniversityUniversityHigher EducationEducationSweden1 API53.4data.worldData CatalogData GovernanceMetadata ManagementSPARQL1 API52.6University of SouthamptonUniversityHigher EducationEducationRussell Group3 APIs50.7Yale UniversityUniversityHigher EducationEducationUnited States4 APIs48.3WorldCatLibrariesBibliographic RecordsWorldCatOCLC4 APIs44.0Google Knowledge Graph SearchEntitiesGoogleKnowledge Graph1 API43.9University of AmsterdamUniversityHigher EducationEducationPublic Research University2 APIs43.8HelmChartsCloud-NativeContainer OrchestrationDevOps1 API43.5Aalto UniversityUniversityHigher EducationEducationFinland5 APIs41.6AgStack FoundationAgricultureLinux FoundationOpen-SourceGeospatial3 APIs41.6DataCiteDOIPersistent IdentifiersScholarly MetadataResearch Data2 APIs41.4Apache JenaJavaOWLOntology1 API41.1
Thin 7 Limited public surface area
RijksmuseumArt And DesignMuseumsCultural HeritageOpen Data5 APIs37.5ConceptNetKnowledge GraphNLPSemantic WebCommon Sense1 API36.1Eclipse RDF4JEclipse FoundationJavaOpen-Source1 API35.3University of BaselUniversityHigher EducationEducationSwitzerland7 APIs35.2Schema.orgSchema.orgStructured DataJSON-LD4 APIs31.7W3CAccessibilityStandardsWebWeb Standards1 API27.2EU Open Data PortalGovernmentOpen DataSPARQLEU1 API26.3
Emerging 7 Early or largely undocumented
SPARQLQuery LanguageRDFSemantic Web2 APIs25.8FIWAREContext InformationDevicesInternet of Things2 APIs24.5Universitat Pompeu FabraEducationHigher EducationUniversityOpen Data4 APIs21.8GS1LogisticsSupply ChainBelgiumStandards1 API21.7DBpediaKnowledge GraphSPARQLSemantic Web6 APIs21.1Sapienza University of RomeEducationHigher EducationUniversityResearch2 APIs18.6RDFJSON-LDKnowledge GraphOntology14.9
Minimal 1 Almost no public developer surface
opendata.gov.al (Open Data Albania)Open DataCustom PlatformDCAT-APSPARQL2 APIs5.3

APIs with this tag (25)

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 6 Solid coverage with minor gaps
Linked Data InterfaceThe Wikidata Linked Data Interface provides individual entity data via content negotiation at http://www.wi...60.8SPARQL Query ServiceThe Wikidata Query Service provides a SPARQL 1.1 endpoint at query.wikidata.org for running complex graph q...60.8Microsoft Azure JSON-LD ContextJSON-LD context definitions for Microsoft Azure resource types, providing semantic annotations and linked d...57.6HM Land Registry Open Data SPARQL APILive SPARQL 1.1 query endpoint over HM Land Registry's open linked data — Price Paid Data transaction recor...56.9HM Land Registry Price Paid Data Linked Data APIW3C Linked Data API over the Price Paid Data dataset, exposing every property sale in England and Wales sol...56.9UK House Price Index Linked Data APIW3C Linked Data API over the UK House Price Index, the official house price statistic calculated by the Off...56.9
Developing 6 Usable, with meaningful gaps to close
Norse World REST-APIThe Norse World REST-API, part of the Norse World research infrastructure at Uppsala University's Departmen...53.4data.world SPARQL Query APIExecute SPARQL queries via GET or POST against datasets. Supports multiple output formats for semantic data...52.6University of Southampton Open Data Service (Linked Data)Institution-built, institution-hosted linked open data covering the physical and organisational University:...50.7Helm JSON-LD ContextJSON-LD context document mapping Helm concepts to linked data vocabularies including Schema.org, Dublin Cor...43.5AgStack Foundation Linkeddata APIThe Linkeddata API from AgStack Foundation — 5 operation(s) for linkeddata.41.6Linked Open Aalto Data (SPARQL)Aalto's open data published as Linked Data — courses, people, publications, places, projects, organisation ...41.6
Thin 6 Limited public surface area
Schema.org JSON-LD ContextThe Schema.org JSON-LD Context provides the canonical JSON-LD context file for the Schema.org vocabulary. T...31.7Schema.org VocabularySchema.org is a collaborative, community-driven vocabulary for structured data on the internet. It provides...31.7Schema.org WebAPI TypeThe Schema.org WebAPI type defines a Web API accessible over Web and Internet technologies. It provides sta...31.7JSON-LDJSON-LD (JSON for Linking Data) is a W3C Recommendation for encoding linked data using JSON. It provides a ...27.2RDF and SPARQLThe Resource Description Framework (RDF) is a W3C standard for representing information in the web. RDF 1.2...27.2EU Open Data Portal SPARQL APIThe EU Open Data Portal SPARQL endpoint provides structured queries against linked open data from European ...26.3
Emerging 6 Early or largely undocumented
UPF Open Data CKAN APICKAN action API for the "UPF en Xifres 2.0" (Open Data UPF) portal, providing programmatic access to instit...21.8UPF Open Data SPARQL EndpointVirtuoso-backed SPARQL endpoint for querying the linked open data published by the UPF Open Data portal as ...21.8GS1 Digital Link Resolver (id.gs1.org)GS1 AISBL's own live, unauthenticated GS1-Conformant Resolver, implementing the GS1-Conformant Resolver Sta...21.7DBpedia Linked DataHTTP Linked Data access to DBpedia resources via content negotiation. Dereference any DBpedia entity URI (h...21.1DBpedia SPARQL EndpointPublic SPARQL 1.1 query endpoint backed by OpenLink Virtuoso over the DBpedia knowledge graph derived from ...21.1Sapienza Library System Open Data & Linked DataOpen data and linked data publishing from the Sistema Bibliotecario Sapienza (Sapienza Library System), pro...18.6
Minimal 1 Almost no public developer surface
Open Data Albania SPARQL endpointSPARQL query endpoint for the linked-data / DCAT-AP graph powering the portal.5.3

Score breakdown

Frequency
45.9
log-scaled weighted occurrences
Breadth
0.8
spread across providers
Quality lift
39.6
mean composite of providers using it
Cohesion
15.7
strength of nearest seed neighbor

Related tags

SPARQL 15 co-occurrences RDF 13 co-occurrences Semantic Web 11 co-occurrences JSON-LD 6 co-occurrences Knowledge Graph 5 co-occurrences OAI-PMH 8 co-occurrences Library 6 co-occurrences Repository 6 co-occurrences

Where this tag comes from

Provider tag21
Api tag27
Openapi tag1
Openapi op tag5

Cohort brief

Auto-generated

The 30 providers in the APIs.io catalog tagged Linked Data, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
30
all scored
Mean Kin Score
33.4
+12.7 vs catalog 20.7
Mean Agent Readiness
20.8
+11.1 vs catalog 9.7
Spread
5.3–58.5
median 36.1 · σ 12.9
How the 30 split by band
Exemplar 0Strong 3Developing 6Thin 10Emerging 10Minimal 1
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 44.9 17.5 +27.4 30
Operational Transparency 25.1 11.3 +13.8 30
Discoverability 68.7 60.4 +8.3 30
Contract Governance 12.4 6.4 +6 30
Access Clarity 27.3 22.3 +5 30
Developer Ergonomics 21.6 17.9 +3.7 30

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) 7% 16% -9
MCP server (first-party) 3% 7% -4
Agent Skills 0% 0% 0
OAuth scopes 13% 9% +4
Security 93% 88% +5
Arazzo workflows 3% 2% +1
Governance rules 57% 13% +44

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 HM Land Registry 58.5
  2. 2 Microsoft Azure 57.3
  3. 3 Wikidata 55.5
  4. 4 data.world 47.7
  5. 5 Yale University 45.8
  6. 6 University of Amsterdam 44.6
  7. 7 WorldCat 44.1
  8. 8 Google Knowledge Graph Search 43.9
  9. 9 DataCite 41.2
  10. 10 Apache Jena 37.9
Top by Agent Readiness
  1. 1 Microsoft Azure 49.6
  2. 2 HM Land Registry 38.7
  3. 3 WorldCat 35.6
  4. 4 University of Amsterdam 31.3
  5. 5 University of Basel 30.6
  6. 6 Wikidata 29.9
  7. 7 ConceptNet 29.6
  8. 8 Yale University 29.6
  9. 9 Rijksmuseum 28.7
  10. 10 AgStack Foundation 28.1
All 30 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 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.

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

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