Schema.org

Schema.org is a collaborative, community-driven project that creates and maintains a shared vocabulary for structured data on the web. Founded by Google, Microsoft, Yahoo, and Yandex in 2011, it provides types and properties that developers and webmasters use to annotate content in formats like JSON-LD, RDFa, and Microdata, enabling search engines and applications to better understand web content. The vocabulary currently consists of 800+ Types, 1500+ Properties, and covers domains including commerce, healthcare, organizations, events, creative works, and more. The Schema.org WebAPI type provides a standardized vocabulary for describing APIs in structured data.

Schema.org publishes 4 APIs on the APIs.io network. Tagged areas include Schema.org, Structured Data, Linked Data, JSON-LD, and Vocabulary.

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

Schema.org’s developer surface includes documentation, engineering blog, support, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.1/100 thin ▼ -5.6 Agent 3/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemium

4 APIs

Schema.orgStructured DataLinked DataJSON-LDVocabularySEOWeb StandardsRDFOntology

Kin Score

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

Composite quality — 35.1/100 · thin

Contract Quality 4.4 / 25

Developer Ergonomics 3.0 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 4.1 / 13

Governance 8.3 / 12

Discoverability 7.4 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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/schema-org: 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 4

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

Rate Limits 1

Documented rate limits and quota policies.

Schema Org Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

JSON Schema 40

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

Scroll for all 40

JSON Structure 40

JSON Structure definitions describing this provider's data shapes.

Scroll for all 40

Examples 2

Example request and response payloads for these APIs.

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

SpectralRules

SpectralRules

JSONLDContext

JSONLDContext

Vocabulary

Vocabulary

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

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/schema-org.png
name: Schema.org
description: Schema.org is a collaborative, community-driven project that creates and maintains a shared vocabulary for structured
  data on the web. Founded by Google, Microsoft, Yahoo, and Yandex in 2011, it provides types and properties that developers
  and webmasters use to annotate content in formats like JSON-LD, RDFa, and Microdata, enabling search engines and applications
  to better understand web content. The vocabulary currently consists of 800+ Types, 1500+ Properties, and covers domains
  including commerce, healthcare, organizations, events, creative works, and more. The Schema.org WebAPI type provides a standardized
  vocabulary for describing APIs in structured data.
url: https://github.com/api-evangelist/schema-org
kind: standard
tags:
- Schema.org
- Structured Data
- Linked Data
- JSON-LD
- Vocabulary
- SEO
- Web Standards
- RDF
- Ontology
created: '2026-05-02'
modified: '2026-05-02'
apis:
- name: Schema.org Vocabulary
  description: Schema.org is a collaborative, community-driven vocabulary for structured data on the internet. It provides
    a collection of shared vocabularies that webmasters and developers can use to mark up pages in ways recognized by major
    search engines. The vocabulary covers entities, relationships between entities, and actions. Machine-readable definitions
    are available in RDF/Turtle, JSON-LD, CSV, and other formats.
  humanURL: https://schema.org/docs/developers.html
  baseURL: https://schema.org
  tags:
  - Schema.org
  - Vocabulary
  - Structured Data
  - Linked Data
  - JSON-LD
  - RDF
  - Microdata
  - RDFa
  - SEO
  - Web Standards
  properties:
  - type: Documentation
    url: https://schema.org/docs/developers.html
  - type: Reference
    url: https://schema.org/docs/schemas.html
  - type: DataModel
    url: https://schema.org/docs/datamodel.html
  - type: ChangeLog
    url: https://schema.org/docs/releases.html
  - type: GitHubRepository
    url: https://github.com/schemaorg/schemaorg
  - type: JSONSchema
    url: json-schema/schema-org-thing-schema.json
- name: Schema.org JSON-LD Context
  description: The Schema.org JSON-LD Context provides the canonical JSON-LD context file for the Schema.org vocabulary. This
    context file maps Schema.org terms to their full IRIs, enabling JSON-LD processors to correctly interpret structured data
    markup. Google recommends JSON-LD as the preferred format for Schema.org structured data on websites.
  humanURL: https://schema.org/docs/developers.html
  baseURL: https://schema.org
  tags:
  - JSON-LD
  - Linked Data
  - Context
  - Vocabulary
  - Structured Data
  properties:
  - type: Documentation
    url: https://schema.org/docs/developers.html
  - type: JSONLDContext
    url: https://schema.org/docs/jsonldcontext.json
- name: Schema.org Markup Validator
  description: The Schema.org Markup Validator tests and validates structured data markup against the Schema.org vocabulary.
    It supports JSON-LD, Microdata, and RDFa formats and helps ensure structured data will be correctly interpreted by search
    engines.
  humanURL: https://validator.schema.org/
  baseURL: https://validator.schema.org
  tags:
  - Validation
  - Structured Data
  - Testing
  - Schema
  - Markup
  properties:
  - type: Documentation
    url: https://validator.schema.org/
- name: Schema.org WebAPI Type
  description: The Schema.org WebAPI type defines a Web API accessible over Web and Internet technologies. It provides standardized
    properties for describing APIs including documentation URL, terms of service, provider, and API entry point. The WebAPI
    type enables search engines and automated tools to discover and understand published APIs.
  humanURL: https://schema.org/WebAPI
  baseURL: https://schema.org
  tags:
  - WebAPI
  - API Description
  - Structured Data
  - Linked Data
  - Schema
  properties:
  - type: Documentation
    url: https://schema.org/WebAPI
  - type: JSONSchema
    url: json-schema/schema-org-web-api-schema.json
common:
- type: DomainSecurity
  url: security/schema-org-domain-security.yml
- type: Website
  url: https://schema.org/
- type: Documentation
  url: https://schema.org/docs/documents.html
- type: Blog
  url: https://blog.schema.org/
- type: Support
  url: https://github.com/schemaorg/schemaorg/issues
- type: SpectralRules
  url: rules/schema-org-rules.yml
- type: JSONLDContext
  url: json-ld/schema-org-context.jsonld
- type: Vocabulary
  url: vocabulary/schema-org-vocabulary.yml
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com