Eclipse RDF4J

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.

Eclipse RDF4J publishes 7 APIs on the APIs.io network, including Contexts API, Namespaces API, Protocol API, and 4 more. Tagged areas include Eclipse Foundation, Java, Linked Data, Open-Source, and RDF.

Eclipse RDF4J’s developer surface includes getting-started guide, documentation, changelog, support, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

29.0/100 thin ▬ flat Agent 24/100 agent aware Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

AccessFreemium

7 APIs

Eclipse Foundation Java Linked Data Open-Source RDF Semantic Web SPARQLTriple Store

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 29.0/100 · thin

Contract Quality 11.2 / 25

Developer Ergonomics 3.3 / 20

Access Clarity 3.2 / 20

Operational Transparency 4.8 / 13

Contract Governance 0.0 / 12

Discoverability 6.5 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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/eclipse-rdf4j: 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 7

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

Rate Limits 1

Documented rate limits and quota policies.

Eclipse Rdf4J Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

SecurityPolicy

SecurityPolicy

DomainSecurity

DomainSecurity

Learn 1

Tutorials, courses, talks, and written guidance

Tutorials

Tutorials

Operate 4

Status, limits, changes, and where to get help

Releases

ChangeLog

Issues

Support

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 1

The organization behind the API

Blog

Blog

Source (apis.yml)

aid: eclipse-rdf4j
name: Eclipse RDF4J
description: 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.
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
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/eclipse-rdf4j.png
url: https://raw.githubusercontent.com/api-evangelist/eclipse-rdf4j/refs/heads/main/apis.yml
tags:
- Eclipse Foundation
- Java
- Linked Data
- Open-Source
- RDF
- Semantic Web
- SPARQL
- Triple Store
tags_raw:
- Eclipse Foundation
- Java
- Linked Data
- Open Source
- RDF
- Semantic Web
- SPARQL
- Triple Store
created: '2024-01-01'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: eclipse-rdf4j:eclipse-rdf4j-contexts-api
  name: Eclipse RDF4J Contexts API
  description: Inspect named graphs (contexts) in a repository.
  humanURL: https://rdf4j.org/documentation/reference/rest-api/
  baseURL: http://localhost:8080/rdf4j-server
  tags:
  - Context
  tags_raw:
  - Contexts
  properties:
  - type: OpenAPI
    url: openapi/eclipse-rdf4j-contexts-api-openapi.yml
  - type: Documentation
    url: https://rdf4j.org/documentation/reference/rest-api/
  - type: GettingStarted
    url: https://rdf4j.org/documentation/programming/getting-started/
  - type: Repository
    url: https://github.com/eclipse/rdf4j
- aid: eclipse-rdf4j:eclipse-rdf4j-namespaces-api
  name: Eclipse RDF4J Namespaces API
  description: Manage namespace prefix declarations.
  humanURL: https://rdf4j.org/documentation/reference/rest-api/
  baseURL: http://localhost:8080/rdf4j-server
  tags:
  - Namespaces
  properties:
  - type: OpenAPI
    url: openapi/eclipse-rdf4j-namespaces-api-openapi.yml
  - type: Documentation
    url: https://rdf4j.org/documentation/reference/rest-api/
  - type: GettingStarted
    url: https://rdf4j.org/documentation/programming/getting-started/
  - type: Repository
    url: https://github.com/eclipse/rdf4j
- aid: eclipse-rdf4j:eclipse-rdf4j-protocol-api
  name: Eclipse RDF4J Protocol API
  description: Protocol version of the server.
  humanURL: https://rdf4j.org/documentation/reference/rest-api/
  baseURL: http://localhost:8080/rdf4j-server
  tags:
  - Protocol
  properties:
  - type: OpenAPI
    url: openapi/eclipse-rdf4j-protocol-api-openapi.yml
  - type: Documentation
    url: https://rdf4j.org/documentation/reference/rest-api/
  - type: GettingStarted
    url: https://rdf4j.org/documentation/programming/getting-started/
  - type: Repository
    url: https://github.com/eclipse/rdf4j
- aid: eclipse-rdf4j:eclipse-rdf4j-repositories-api
  name: Eclipse RDF4J Repositories API
  description: Manage and inspect RDF repositories.
  humanURL: https://rdf4j.org/documentation/reference/rest-api/
  baseURL: http://localhost:8080/rdf4j-server
  tags:
  - Repositories
  properties:
  - type: OpenAPI
    url: openapi/eclipse-rdf4j-repositories-api-openapi.yml
  - type: Documentation
    url: https://rdf4j.org/documentation/reference/rest-api/
  - type: GettingStarted
    url: https://rdf4j.org/documentation/programming/getting-started/
  - type: Repository
    url: https://github.com/eclipse/rdf4j
- aid: eclipse-rdf4j:eclipse-rdf4j-size-api
  name: Eclipse RDF4J Size API
  description: Get the number of statements in a repository.
  humanURL: https://rdf4j.org/documentation/reference/rest-api/
  baseURL: http://localhost:8080/rdf4j-server
  tags:
  - Size
  properties:
  - type: OpenAPI
    url: openapi/eclipse-rdf4j-size-api-openapi.yml
  - type: Documentation
    url: https://rdf4j.org/documentation/reference/rest-api/
  - type: GettingStarted
    url: https://rdf4j.org/documentation/programming/getting-started/
  - type: Repository
    url: https://github.com/eclipse/rdf4j
- aid: eclipse-rdf4j:eclipse-rdf4j-statements-api
  name: Eclipse RDF4J Statements API
  description: Read and modify the RDF statements in a repository.
  humanURL: https://rdf4j.org/documentation/reference/rest-api/
  baseURL: http://localhost:8080/rdf4j-server
  tags:
  - Statements
  properties:
  - type: OpenAPI
    url: openapi/eclipse-rdf4j-statements-api-openapi.yml
  - type: Documentation
    url: https://rdf4j.org/documentation/reference/rest-api/
  - type: GettingStarted
    url: https://rdf4j.org/documentation/programming/getting-started/
  - type: Repository
    url: https://github.com/eclipse/rdf4j
- aid: eclipse-rdf4j:eclipse-rdf4j-transactions-api
  name: Eclipse RDF4J Transactions API
  description: Group multiple operations in an atomic transaction.
  humanURL: https://rdf4j.org/documentation/reference/rest-api/
  baseURL: http://localhost:8080/rdf4j-server
  tags:
  - Transaction
  tags_raw:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/eclipse-rdf4j-transactions-api-openapi.yml
  - type: Documentation
    url: https://rdf4j.org/documentation/reference/rest-api/
  - type: GettingStarted
    url: https://rdf4j.org/documentation/programming/getting-started/
  - type: Repository
    url: https://github.com/eclipse/rdf4j
common:
- type: Releases
  url: https://github.com/eclipse/rdf4j/releases
- type: SecurityPolicy
  url: https://github.com/eclipse-rdf4j/rdf4j/blob/main/SECURITY.md
- type: CodeOfConduct
  url: https://github.com/eclipse-rdf4j/rdf4j/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/eclipse-rdf4j/rdf4j/blob/main/CONTRIBUTING.md
- type: AgenticAccess
  url: agentic-access/eclipse-rdf4j-agentic-access.yml
- type: DomainSecurity
  url: security/eclipse-rdf4j-domain-security.yml
- type: GettingStarted
  url: https://rdf4j.org/documentation/programming/getting-started/
- type: Documentation
  url: https://rdf4j.org/documentation/
- type: Tutorials
  url: https://rdf4j.org/documentation/tutorials/
- type: ChangeLog
  url: https://rdf4j.org/release-notes/
- type: Issues
  url: https://github.com/eclipse/rdf4j/issues
- type: Support
  url: https://github.com/eclipse/rdf4j/discussions
- type: GitHubOrganization
  url: https://github.com/eclipse/rdf4j
- type: License
  url: https://github.com/eclipse/rdf4j/blob/main/LICENSE.md
- type: Blog
  url: https://rdf4j.org/index.xml
maintainers:
- FN: Eclipse Foundation
  email: rdf4j-dev@eclipse.org

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