# Eclipse RDF4J

**Canonical:** https://apis.io/providers/eclipse-rdf4j/  
**APIs profiled:** 7

Eclipse RDF4J is a powerful open-source Java framework for processing and handling RDF data. It supports creating, parsing, scalable storage, reasoning, and querying with RDF and Linked Data, and ships with an HTTP server (RDF4J Server) and a web-based Workbench. The framework offers an easy-to-use Java API and SPARQL 1.1 support, and integrates with leading RDF database solutions.

## Kin Score — 29.0 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 29.0).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 44.9 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 23.5 (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 | partial |
| 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 (7)

- **Eclipse RDF4J Contexts API** — Inspect named graphs (contexts) in a repository.
- **Eclipse RDF4J Namespaces API** — Manage namespace prefix declarations.
- **Eclipse RDF4J Protocol API** — Protocol version of the server.
- **Eclipse RDF4J Repositories API** — Manage and inspect RDF repositories.
- **Eclipse RDF4J Size API** — Get the number of statements in a repository.
- **Eclipse RDF4J Statements API** — Read and modify the RDF statements in a repository.
- **Eclipse RDF4J Transactions API** — Group multiple operations in an atomic transaction.

## Agentic access (1)

- **Eclipse Rdf4J Agentic Access** — 20 operations · 12 acting

## Security (1)

- **Eclipse Rdf4J Domain Security** — TLSv1.3

## Plans (1)

- **Eclipse Rdf4J Plans Pricing**

## Tags

Eclipse Foundation, Java, Linked Data, Open-Source, RDF, Semantic Web, SPARQL, Triple Store

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/eclipse-rdf4j/). Scores are computed from the provider's own public artifacts under a published rubric.