SPARQL website screenshot

SPARQL

SPARQL (SPARQL Protocol and RDF Query Language) is a W3C Recommendation that provides a standardized query language for retrieving and manipulating data stored in Resource Description Framework (RDF) format. It includes a protocol for submitting queries and updates over HTTP, a JSON results format for SELECT and ASK queries, and a Graph Store HTTP Protocol for managing RDF graphs.

SPARQL publishes 5 APIs on the APIs.io network, including Query API, Graph API, and 3 more. Tagged areas include Linked Data, Query Language, RDF, Semantic Web, and SPARQL.

🌐 Visit website 📡 Source on GitHub
26.2/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-09-19 · rubric v0.22.0
AccessFreemium
2 APIs
Linked DataQuery LanguageRDFSemantic WebSPARQLW3C

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-19 · rubric v0.22.0
Composite quality — 26.2/100 · thin
Contract Quality 13.1 / 23
Developer Ergonomics 0.0 / 18
Access Clarity 2.8 / 18
Operational Transparency 0.9 / 12
Contract Governance 0.0 / 11
Discoverability 6.3 / 9
Create-or-Update Ergonomics 1.1 / 10
Agent readiness — 22/100 · 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
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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/sparql: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 6

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

SPARQL Protocol API

Standard SPARQL 1.1 Protocol HTTP endpoints for executing queries and updates against RDF datasets, plus the Graph Store HTTP Protocol for direct management of named graphs and ...

SPARQL Query API

SPARQL query operation

SPARQL API

The Sparql API from SPARQL — 1 operation(s) for sparql.

SPARQL Graph API

The Sparql Graph API from SPARQL — 1 operation(s) for sparql graph.

SPARQL Update API

The Sparql Update API from SPARQL — 1 operation(s) for sparql update.

SPARQL Update API

SPARQL update operation

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

SPARQL 1.1 Protocol Query API

OPEN COLLECTION

1.1 Protocol Query Sparql API

OPEN COLLECTION

SPARQL 1.1 Protocol Query Sparql Graph API

OPEN COLLECTION

SPARQL 1.1 Protocol Query Sparql Update API

OPEN COLLECTION

SPARQL 1.1 Protocol Query Update API

OPEN COLLECTION

SPARQL 1.1 Protocol

OPEN COLLECTION

Scroll for all 7

Pricing Plans 1

Published pricing tiers and plan structures.

Sparql Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sparql Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Sparql Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sparql Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Sparql Agentic Access

10 operations · 7 acting

10 operations · 7 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Source (apis.yml)

apis.yml Raw ↑ 
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
specificationVersion: '0.23'
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/sparql.png
name: SPARQL
description: SPARQL (SPARQL Protocol and RDF Query Language) is a W3C Recommendation that provides a standardized query language
  for retrieving and manipulating data stored in Resource Description Framework (RDF) format. It includes a protocol for submitting
  queries and updates over HTTP, a JSON results format for SELECT and ASK queries, and a Graph Store HTTP Protocol for managing
  RDF graphs.
url: https://www.w3.org/TR/sparql11-overview/
tags:
- Linked Data
- Query Language
- RDF
- Semantic Web
- SPARQL
- W3C
created: '2025'
modified: '2026-09-16'
apis:
- name: SPARQL Protocol API
  description: Standard SPARQL 1.1 Protocol HTTP endpoints for executing queries and updates against RDF datasets, plus the
    Graph Store HTTP Protocol for direct management of named graphs and the default graph, as defined by the W3C Recommendation.
  humanURL: https://www.w3.org/TR/sparql11-protocol/
  baseURL: https://dbpedia.org/sparql
  version: '1.1'
  tags:
  - Graph Store
  - Query
  - RDF
  - SPARQL
  tags_raw:
  - Graph Store
  - Query
  - RDF
  - SPARQL
  - Update
  properties:
  - type: x-openapi
    url: openapi/_original/openapi.yml
  - type: x-json-schema
    url: json-schema.json
  - type: x-json-ld-context
    url: json-ld-context.jsonld
  - type: x-documentation
    url: https://www.w3.org/TR/sparql11-overview/
  - type: x-specification
    url: https://www.w3.org/TR/sparql11-protocol/
  - type: x-specification
    url: https://www.w3.org/TR/sparql11-query/
  - type: x-specification
    url: https://www.w3.org/TR/sparql11-results-json/
  contact:
  - type: x-website
    url: https://www.w3.org/
  - type: x-github
    url: https://github.com/w3c/sparql-query
- aid: sparql:sparql-query-api
  name: SPARQL Query API
  description: SPARQL query operation
  humanURL: https://www.w3.org/TR/sparql11-protocol/
  baseURL: https://dbpedia.org/sparql
  tags:
  - Query
  properties:
  - type: OpenAPI
    url: openapi/sparql-query-api-openapi.yml
- aid: sparql:sparql-sparql-api
  name: SPARQL API
  description: The Sparql API from SPARQL — 1 operation(s) for sparql.
  humanURL: https://www.w3.org/TR/sparql11-protocol/
  baseURL: https://dbpedia.org/sparql
  tags:
  - SPARQL
  tags_raw:
  - Sparql
  properties:
  - type: OpenAPI
    url: openapi/sparql-sparql-api-openapi.yml
- aid: sparql:sparql-sparql-graph-api
  name: SPARQL Graph API
  description: The Sparql Graph API from SPARQL — 1 operation(s) for sparql graph.
  humanURL: https://www.w3.org/TR/sparql11-protocol/
  baseURL: https://dbpedia.org/sparql
  tags:
  - Sparql Graph
  properties:
  - type: OpenAPI
    url: openapi/sparql-sparql-graph-api-openapi.yml
- aid: sparql:sparql-sparql-update-api
  name: SPARQL Update API
  description: The Sparql Update API from SPARQL — 1 operation(s) for sparql update.
  humanURL: https://www.w3.org/TR/sparql11-protocol/
  baseURL: https://dbpedia.org/sparql
  tags:
  - SPARQL Update
  tags_raw:
  - Sparql Update
  properties:
  - type: OpenAPI
    url: openapi/sparql-sparql-update-api-openapi.yml
- aid: sparql:sparql-update-api
  name: SPARQL Update API
  description: SPARQL update operation
  humanURL: https://www.w3.org/TR/sparql11-protocol/
  baseURL: https://dbpedia.org/sparql
  tags: []
  tags_raw:
  - Update
  properties:
  - type: OpenAPI
    url: openapi/sparql-update-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/sparql-agentic-access.yml
- type: DomainSecurity
  url: security/sparql-domain-security.yml

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