Apache Jena

Apache Jena is a Java framework for building Semantic Web and Linked Data applications. It provides APIs for RDF, SPARQL, OWL, and a triplestore database (TDB2) along with the Fuseki SPARQL server with a REST API for querying and managing RDF datasets.

Apache Jena publishes 4 APIs on the APIs.io network, including Dataset Management API, Graph Store Protocol API, SPARQL Query API, and 1 more. Tagged areas include Java, Linked Data, OWL, Ontology, and Open Source.

The Apache Jena catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Apache Jena’s developer surface includes documentation, getting-started guide, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

50.1/100 developing ▼ -5.1 Agent 28/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemium

5 APIs 7 Features 4 Use Cases

JavaLinked DataOWLOntologyOpen SourceRDFSemantic WebSPARQL

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 50.1/100 · developing

Contract Quality 14.6 / 25

Developer Ergonomics 3.9 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 6.8 / 13

Governance 8.3 / 12

Discoverability 6.5 / 10

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/apache-jena: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Apache Jena Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Apache Jena Finops

FINOPS

Features 7

Notable capabilities this provider offers.

SPARQL Query and Update

Full SPARQL 1.1 query and update protocol support via Fuseki REST API.

RDF Model API

Java API for creating, reading, and manipulating RDF graphs.

OWL Reasoning

OWL and RDFS inference via Jena's rule-based and OWL reasoners.

TDB2 Triplestore

Native high-performance RDF triplestore for persistent graph storage.

Graph Store Protocol

SPARQL Graph Store HTTP Protocol for named graph management.

Multiple RDF Formats

Support for Turtle, JSON-LD, N-Triples, RDF/XML, and TriG serialization.

Ontology API

High-level API for working with OWL and RDFS ontologies.

Scroll for all 7

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

Examples 6

Example request and response payloads for these APIs.

Use Cases 4

What developers build with this provider.

Knowledge Graph Management

Build and query knowledge graphs using RDF and SPARQL.

Linked Data Publishing

Publish Linked Data endpoints with Fuseki SPARQL server.

Semantic Search

Enable semantic search over structured RDF datasets.

Data Integration

Integrate heterogeneous data sources using RDF as a common data model.

Integrations 3

Pre-built integrations with other platforms and tools.

Apache Solr

Integrate full-text search with SPARQL queries via Solr text index.

Elasticsearch

Full-text search integration for Fuseki text search capabilities.

Spring Framework

Spring integration for Jena RDF operations in enterprise Java apps.

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Versioning

Versioning

SpectralRules

SpectralRules

Vocabulary

Vocabulary

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

Source (apis.yml)

aid: apache-jena
name: Apache Jena
description: Apache Jena is a Java framework for building Semantic Web and Linked Data applications. It provides APIs for
  RDF, SPARQL, OWL, and a triplestore database (TDB2) along with the Fuseki SPARQL server with a REST API for querying and
  managing RDF datasets.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/apache-jena.png
tags:
- Java
- Linked Data
- OWL
- Ontology
- Open Source
- RDF
- Semantic Web
- SPARQL
created: '2026-03-16'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/apache-jena/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: apache-jena:java-api
  name: Apache Jena Java API
  description: The Jena Java API provides programmatic access to RDF model creation, SPARQL query execution, OWL reasoning,
    and TDB2 triplestore management for building Semantic Web applications.
  humanURL: https://jena.apache.org/documentation/
  tags:
  - Java
  - OWL
  - RDF
  - SDK
  properties:
  - type: Documentation
    url: https://jena.apache.org/documentation/
  - type: GettingStarted
    url: https://jena.apache.org/tutorials/
- aid: apache-jena:apache-jena-dataset-management-api
  name: Apache Jena Dataset Management API
  description: Dataset administration
  humanURL: https://jena.apache.org/documentation/fuseki2/
  tags:
  - Dataset Management
  properties:
  - type: OpenAPI
    url: openapi/apache-jena-dataset-management-api-openapi.yml
  - type: Documentation
    url: https://jena.apache.org/documentation/fuseki2/
- aid: apache-jena:apache-jena-graph-store-protocol-api
  name: Apache Jena Graph Store Protocol API
  description: SPARQL Graph Store HTTP Protocol operations
  humanURL: https://jena.apache.org/documentation/fuseki2/
  tags:
  - Graph Store Protocol
  properties:
  - type: OpenAPI
    url: openapi/apache-jena-graph-store-protocol-api-openapi.yml
  - type: Documentation
    url: https://jena.apache.org/documentation/fuseki2/
- aid: apache-jena:apache-jena-sparql-query-api
  name: Apache Jena SPARQL Query API
  description: SPARQL 1.1 Query operations
  humanURL: https://jena.apache.org/documentation/fuseki2/
  tags:
  - SPARQL Query
  properties:
  - type: OpenAPI
    url: openapi/apache-jena-sparql-query-api-openapi.yml
  - type: Documentation
    url: https://jena.apache.org/documentation/fuseki2/
- aid: apache-jena:apache-jena-sparql-update-api
  name: Apache Jena SPARQL Update API
  description: SPARQL 1.1 Update operations
  humanURL: https://jena.apache.org/documentation/fuseki2/
  tags:
  - SPARQL Update
  properties:
  - type: OpenAPI
    url: openapi/apache-jena-sparql-update-api-openapi.yml
  - type: Documentation
    url: https://jena.apache.org/documentation/fuseki2/
common:
- type: AgenticAccess
  url: agentic-access/apache-jena-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/apache-jena-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/apache-jena-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/apache
- type: GitHubRepository
  url: https://github.com/apache/jena
- type: Documentation
  url: https://jena.apache.org/documentation/
- type: GettingStarted
  url: https://jena.apache.org/tutorials/
- type: TermsOfService
  url: https://www.apache.org/licenses/LICENSE-2.0
- type: Versioning
  url: https://jena.apache.org/about_jena/releases.html
- type: SpectralRules
  url: rules/apache-jena-spectral-rules.yml
- type: Vocabulary
  url: vocabulary/apache-jena-vocabulary.yaml
- type: Features
  data:
  - name: SPARQL Query and Update
    description: Full SPARQL 1.1 query and update protocol support via Fuseki REST API.
  - name: RDF Model API
    description: Java API for creating, reading, and manipulating RDF graphs.
  - name: OWL Reasoning
    description: OWL and RDFS inference via Jena's rule-based and OWL reasoners.
  - name: TDB2 Triplestore
    description: Native high-performance RDF triplestore for persistent graph storage.
  - name: Graph Store Protocol
    description: SPARQL Graph Store HTTP Protocol for named graph management.
  - name: Multiple RDF Formats
    description: Support for Turtle, JSON-LD, N-Triples, RDF/XML, and TriG serialization.
  - name: Ontology API
    description: High-level API for working with OWL and RDFS ontologies.
- type: UseCases
  data:
  - name: Knowledge Graph Management
    description: Build and query knowledge graphs using RDF and SPARQL.
  - name: Linked Data Publishing
    description: Publish Linked Data endpoints with Fuseki SPARQL server.
  - name: Semantic Search
    description: Enable semantic search over structured RDF datasets.
  - name: Data Integration
    description: Integrate heterogeneous data sources using RDF as a common data model.
- type: Integrations
  data:
  - name: Apache Solr
    description: Integrate full-text search with SPARQL queries via Solr text index.
  - name: Elasticsearch
    description: Full-text search integration for Fuseki text search capabilities.
  - name: Spring Framework
    description: Spring integration for Jena RDF operations in enterprise Java apps.
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com