R website screenshot

R

R is a free, open-source programming language and statistical computing environment maintained by the R Core Team and supported by the R Foundation. It provides a wide variety of statistical and graphical techniques and is highly extensible through its package ecosystem on CRAN (Comprehensive R Archive Network), Bioconductor, and GitHub. R is widely used among statisticians, data scientists, and researchers for data analysis, visualization, and reproducible research.

R publishes 5 APIs on the APIs.io network, including Badges API, Downloads API, Packages API, and 2 more. Tagged areas include R, Statistics, Data Science, Open Source, and Programming Language.

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

R’s developer surface includes documentation, engineering blog, Stack Overflow tag, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
44.3/100 developing ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
5 APIs
RStatisticsData ScienceOpen SourceProgramming Language

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 44.3/100 · developing
Contract Quality 15.1 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 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/r: 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 5

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

R Badges API

Download count badge endpoints

R Downloads API

Package download statistics

R Packages API

CRAN package metadata

R Top Packages API

Most-downloaded CRAN packages

R Versions API

R release version information

Open Collections 3

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

METACRAN CranDB API

OPEN COLLECTION

METACRAN CranLogs API

OPEN COLLECTION

R Versions API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

R Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

R Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

R Finops

FINOPS

Semantic Vocabularies 1

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

R Context

8 classes · 10 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

R API Rules

5 rules · 3 warnings 2 info

SPECTRAL

R API Rules

13 rules · 2 errors 10 warnings 1 info

SPECTRAL

JSON Schema 3

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

CRAN Package

18 properties

JSON SCHEMA

CRAN Package Download Statistics

4 properties

JSON SCHEMA

R Version

3 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

R Cran Package Structure

0 properties

JSON STRUCTURE

Examples 3

Example request and response payloads for these APIs.

R Get Package Download Totals Example

2 fields

EXAMPLE

R Get Package Metadata Example

2 fields

EXAMPLE

R Get R Release Example

2 fields

EXAMPLE

Security Posture 1

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

R Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

R Agentic Access

14 operations

14 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

PackageRegistry
PackageRegistry
 PackageRegistry
PackageRegistry

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg
 GitHubOrg
GitHubOrg
 PackageSearch
PackageSearch
 PackageSearch
PackageSearch

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Forums
Forums
 StackOverflow
StackOverflow

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: r
name: R
description: R is a free, open-source programming language and statistical computing environment maintained by the R Core
  Team and supported by the R Foundation. It provides a wide variety of statistical and graphical techniques and is highly
  extensible through its package ecosystem on CRAN (Comprehensive R Archive Network), Bioconductor, and GitHub. R is widely
  used among statisticians, data scientists, and researchers for data analysis, visualization, and reproducible research.
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/r.png
url: https://raw.githubusercontent.com/api-evangelist/r/refs/heads/main/apis.yml
tags:
- R
- Statistics
- Data Science
- Open Source
- Programming Language
created: '2025-01-01'
modified: '2026-05-19'
specificationVersion: '0.19'
apis:
- aid: r:r-badges-api
  name: R Badges API
  description: Download count badge endpoints
  humanURL: https://github.com/metacran/crandb
  baseURL: https://crandb.r-pkg.org
  tags:
  - Badges
  properties:
  - type: OpenAPI
    url: openapi/r-badges-api-openapi.yml
  - type: Documentation
    url: https://github.com/metacran/crandb
  - type: Documentation
    url: https://github.com/metacran/cranlogs.app
  - type: Documentation
    url: https://github.com/metacran/rversions.app
- aid: r:r-downloads-api
  name: R Downloads API
  description: Package download statistics
  humanURL: https://github.com/metacran/crandb
  baseURL: https://crandb.r-pkg.org
  tags:
  - Downloads
  properties:
  - type: OpenAPI
    url: openapi/r-downloads-api-openapi.yml
  - type: Documentation
    url: https://github.com/metacran/crandb
  - type: Documentation
    url: https://github.com/metacran/cranlogs.app
  - type: Documentation
    url: https://github.com/metacran/rversions.app
- aid: r:r-packages-api
  name: R Packages API
  description: CRAN package metadata
  humanURL: https://github.com/metacran/crandb
  baseURL: https://crandb.r-pkg.org
  tags:
  - Packages
  properties:
  - type: OpenAPI
    url: openapi/r-packages-api-openapi.yml
  - type: Documentation
    url: https://github.com/metacran/crandb
  - type: Documentation
    url: https://github.com/metacran/cranlogs.app
  - type: Documentation
    url: https://github.com/metacran/rversions.app
- aid: r:r-top-packages-api
  name: R Top Packages API
  description: Most-downloaded CRAN packages
  humanURL: https://github.com/metacran/crandb
  baseURL: https://crandb.r-pkg.org
  tags:
  - Top Packages
  properties:
  - type: OpenAPI
    url: openapi/r-top-packages-api-openapi.yml
  - type: Documentation
    url: https://github.com/metacran/crandb
  - type: Documentation
    url: https://github.com/metacran/cranlogs.app
  - type: Documentation
    url: https://github.com/metacran/rversions.app
- aid: r:r-versions-api
  name: R Versions API
  description: R release version information
  humanURL: https://github.com/metacran/crandb
  baseURL: https://crandb.r-pkg.org
  tags:
  - Versions
  properties:
  - type: OpenAPI
    url: openapi/r-versions-api-openapi.yml
  - type: Documentation
    url: https://github.com/metacran/crandb
  - type: Documentation
    url: https://github.com/metacran/cranlogs.app
  - type: Documentation
    url: https://github.com/metacran/rversions.app
common:
- type: AgenticAccess
  url: agentic-access/r-agentic-access.yml
- type: DomainSecurity
  url: security/r-domain-security.yml
- type: Website
  url: https://www.r-project.org/
- type: Documentation
  url: https://cran.r-project.org/manuals.html
- type: GitHubOrg
  url: https://github.com/r-lib
- type: GitHubOrg
  url: https://github.com/r-devel
- type: PackageRegistry
  url: https://cran.r-project.org/
- type: PackageRegistry
  url: https://bioconductor.org/
- type: PackageSearch
  url: https://www.rdocumentation.org/
- type: PackageSearch
  url: https://rdrr.io/
- type: Blog
  url: https://blog.r-project.org/
- type: Forums
  url: https://stat.ethz.ch/mailman/listinfo/r-help
- type: StackOverflow
  url: https://stackoverflow.com/questions/tagged/r
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com