RDF

The Resource Description Framework (RDF) is a W3C standard for representing information about resources on the web. RDF is the foundation for linked data and the semantic web, providing a graph-based data model where statements are expressed as subject-predicate-object triples. It enables interoperability between systems by using IRIs to identify resources and relationships, supporting multiple serialization formats including RDF/XML, Turtle, N-Triples, N-Quads, TriG, and JSON-LD. RDF 1.1 is a W3C Recommendation (2014). RDF 1.2 is a Candidate Recommendation (2026) adding triple terms (RDF-star) and directional language-tagged strings.

RDF is profiled on the APIs.io network. Tagged areas include JSON-LD, Knowledge Graph, Linked Data, Ontology, and RDF.

The RDF catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

RDF’s developer surface includes code examples, documentation, GitHub presence, and 12 more developer resources.

📡 Source on GitHub

14.9/100 emerging ▬ flat Agent 1/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

JSON-LD Knowledge Graph Linked Data Ontology RDF Semantic Web SPARQL W3C

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 14.9/100 · emerging

Contract Quality 4.3 / 25

Developer Ergonomics 1.9 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.7 / 13

Contract Governance 3.0 / 12

Discoverability 5.0 / 10

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Rdf Context

0 classes · 30 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

RDF API Rules

6 rules · 4 warnings 2 info

SPECTRAL

JSON Schema 3

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

RDF Dataset

2 properties

JSON SCHEMA

RDF Graph

0 properties

JSON SCHEMA

RDF Triple

3 properties

JSON SCHEMA

JSON Structure 2

JSON Structure definitions describing this provider's data shapes.

Rdf Graph Structure

0 properties

JSON STRUCTURE

Rdf Triple Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Rdf Graph Example

1 fields

EXAMPLE

Rdf Triple Example

4 fields

EXAMPLE

Resources

Documentation 8

Reference material describing how the API behaves

JSONSchema

JSONSchema

JSONSchema

Specification

Specification

Specification

Specification

Documentation

Scroll for all 8

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

JSONStructure

JSONStructure

JSONLDContext

Vocabulary

Build 3

SDKs, sample code, and the tooling you integrate with

Examples

Examples

Examples

Examples

GitHub

GitHub

Source (apis.yml)

aid: rdf
name: RDF
description: The Resource Description Framework (RDF) is a W3C standard for representing information about resources on the
  web. RDF is the foundation for linked data and the semantic web, providing a graph-based data model where statements are
  expressed as subject-predicate-object triples. It enables interoperability between systems by using IRIs to identify resources
  and relationships, supporting multiple serialization formats including RDF/XML, Turtle, N-Triples, N-Quads, TriG, and JSON-LD.
  RDF 1.1 is a W3C Recommendation (2014). RDF 1.2 is a Candidate Recommendation (2026) adding triple terms (RDF-star) and
  directional language-tagged strings.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/rdf.png
url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/apis.yml
tags:
- JSON-LD
- Knowledge Graph
- Linked Data
- Ontology
- RDF
- Semantic Web
- SPARQL
- W3C
created: '2025-01-01'
modified: '2026-05-02'
specificationVersion: '0.23'
apis: []
common:
- type: JSONSchema
  name: RDF Triple Schema
  description: JSON Schema for an RDF triple (subject, predicate, object).
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/json-schema/rdf-triple.json
- type: JSONSchema
  name: RDF Graph Schema
  description: JSON Schema for an RDF graph in the RDF/JSON serialization format.
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/json-schema/rdf-graph.json
- type: JSONSchema
  name: RDF Dataset Schema
  description: JSON Schema for an RDF dataset (default graph plus named graphs).
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/json-schema/rdf-dataset.json
- type: JSONStructure
  name: RDF Triple Structure
  description: Field-level structure documentation for the RDF triple object.
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/json-structure/rdf-triple-structure.json
- type: JSONStructure
  name: RDF Graph Structure
  description: Field-level structure documentation for the RDF graph serialization.
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/json-structure/rdf-graph-structure.json
- type: JSONLDContext
  name: RDF JSON-LD Context
  description: JSON-LD context defining core RDF, RDFS, OWL, and related vocabularies.
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/json-ld/rdf-context.jsonld
- type: Examples
  name: RDF Triple Example
  description: Example RDF triple about Tim Berners-Lee using foaf:name.
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/examples/rdf-triple-example.json
- type: Examples
  name: RDF Graph Example
  description: Example RDF graph in RDF/JSON serialization about Tim Berners-Lee.
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/examples/rdf-graph-example.json
- type: Vocabulary
  name: RDF Vocabulary
  description: Normative vocabulary for RDF concepts, serialization formats, and related standards.
  url: https://raw.githubusercontent.com/api-evangelist/rdf/refs/heads/main/vocabulary/rdf-vocabulary.yml
- type: Specification
  name: RDF 1.1 Concepts and Abstract Syntax
  description: W3C Recommendation defining the RDF data model.
  url: https://www.w3.org/TR/rdf11-concepts/
- type: Specification
  name: RDF 1.2 Concepts and Abstract Data Model
  description: W3C Candidate Recommendation (2026) introducing triple terms and directional language-tagged strings.
  url: https://www.w3.org/TR/rdf12-concepts/
- type: Specification
  name: SPARQL 1.1 Query Language
  description: W3C Recommendation for querying RDF data.
  url: https://www.w3.org/TR/sparql11-query/
- type: Specification
  name: JSON-LD 1.1
  description: W3C Recommendation for JSON-based RDF serialization.
  url: https://www.w3.org/TR/json-ld11/
- type: Documentation
  name: W3C RDF Working Group
  description: W3C working group developing RDF and SPARQL specifications.
  url: https://www.w3.org/groups/wg/rdf-star/
- type: GitHub
  name: W3C RDF Working Group GitHub
  description: GitHub organization for the W3C RDF and SPARQL specifications.
  url: https://github.com/w3c/rdf-star-wg
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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