stale · 0.0

Semantic Web

Score 16.1 / 100 18 providers 10 APIs Search apis.io →

Providers using this tag (18)

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

Strong 2 Solid coverage with minor gaps
WikidataKnowledge GraphLinked DataOpen Data1 API60.8Microsoft AzureAPI ManagementCloudCloud ComputingEnterprise697 APIs57.6
Developing 3 Usable, with meaningful gaps to close
data.worldData CatalogData GovernanceMetadata ManagementSPARQL1 API52.6Maastricht UniversityUniversityHigher EducationEducationNetherlands10 APIs47.1Apache JenaJavaLinked DataOWLOntology1 API41.1
Thin 6 Limited public surface area
Golden RecursionCompanyKnowledge GraphData EnrichmentEntity Data1 API39.1ConceptNetKnowledge GraphNLPCommon Sense1 API36.1Eclipse RDF4JEclipse FoundationJavaLinked DataOpen-Source1 API35.3StardogKnowledge GraphGraph DatabaseSPARQL1 API27.6W3CAccessibilityStandardsWebWeb Standards1 API27.2UniProtProteinsBioinformaticsGenomicsLife Sciences7 APIs26.2
Emerging 5 Early or largely undocumented
SPARQLLinked DataQuery LanguageRDF2 APIs25.8Universitat Pompeu FabraEducationHigher EducationUniversityOpen Data4 APIs21.8DBpediaLinked DataKnowledge GraphSPARQL6 APIs21.1BRICK SchemaBuilding Information ModelingBIMSmart BuildingsOntology1 API15.8RDFJSON-LDKnowledge GraphLinked DataOntology14.9
Minimal 2 Almost no public developer surface
HTMLHTMLLiving StandardMarkup Language6.4HTML5FrontendHTML5Living StandardMarkup Language6.4

APIs with this tag (10)

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
Microsoft Azure JSON-LD ContextJSON-LD context definitions for Microsoft Azure resource types, providing semantic annotations and linked d...57.6
Developing 2 Usable, with meaningful gaps to close
data.world SPARQL Query APIExecute SPARQL queries via GET or POST against datasets. Supports multiple output formats for semantic data...52.6Maastricht University Institute of Data Science (Open Source)The Institute of Data Science maintains an active public GitHub organization (220 public repositories) with...47.1
Thin 3 Limited public surface area
JSON-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...27.2UniProt SPARQL EndpointA standards-compliant SPARQL 1.1 endpoint exposing the full UniProt knowledge graph as RDF. The current rel...26.2
Emerging 4 Early or largely undocumented
UPF Open Data SPARQL EndpointVirtuoso-backed SPARQL endpoint for querying the linked open data published by the UPF Open Data portal as ...21.8DBpedia 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 ...21.1BRICK OntologyThe BRICK ontology v1.4.4 defines a standardized vocabulary of building system concepts, relationships, and...15.8

Score breakdown

Frequency
36.6
log-scaled weighted occurrences
Breadth
0.5
spread across providers
Quality lift
34.4
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor

Related tags

SPARQL 12 co-occurrences RDF 10 co-occurrences Linked Data 11 co-occurrences W3C 5 co-occurrences Knowledge Graph 7 co-occurrences Open Data 7 co-occurrences

Where this tag comes from

Provider tag12
Api tag10

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

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

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.