# Apache Jena

**Canonical:** https://apis.io/providers/apache-jena/  
**APIs profiled:** 5

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.

## Kin Score — 37.8 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 37.8).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 55.9 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 26.3 |
| Access Clarity | 26.3 |

## Agent readiness — 26.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (5)

- **Apache Jena Java API** — 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.
- **Apache Jena Dataset Management API** — Dataset administration
- **Apache Jena Graph Store Protocol API** — SPARQL Graph Store HTTP Protocol operations
- **Apache Jena SPARQL Query API** — SPARQL 1.1 Query operations
- **Apache Jena SPARQL Update API** — SPARQL 1.1 Update operations

## Agentic access (1)

- **Apache Jena Agentic Access** — 11 operations · 7 acting

## Security (2)

- **Apache Jena Domain Security** — TLSv1.3 · HSTS · DMARC
- **Apache Jena Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Apache Jena Plans Pricing**

## Use cases (4)

- **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.

## Tags

Java, Linked Data, OWL, Ontology, Open-Source, RDF, Semantic Web, SPARQL

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/apache-jena/). Scores are computed from the provider's own public artifacts under a published rubric.