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OpenAPI Specification
openapi: 3.2.0
info:
title: METACRAN CranDB Packages API
description: CouchDB-backed REST API providing programmatic access to metadata for all CRAN R packages. Enables lookup of package information, version history, dependencies, and maintainer data in JSON format.
version: 1.0.0
contact:
name: METACRAN
url: https://r-pkg.org
license:
name: MIT
url: https://opensource.org/licenses/MIT
servers:
- url: https://crandb.r-pkg.org
description: METACRAN CranDB production server
tags:
- name: Packages
description: CRAN package metadata
paths:
/{package}:
get:
operationId: getPackage
summary: Get Package Metadata
description: Returns metadata for the latest version of an R package on CRAN, including description, version, dependencies, maintainer, license, and publication date.
tags:
- Packages
parameters:
- name: package
in: path
required: true
description: CRAN package name (case-sensitive)
schema:
type: string
example: ggplot2
responses:
'200':
description: Package metadata
content:
application/json:
schema:
$ref: '#/components/schemas/PackageMetadata'
'404':
description: Package not found
/{package}/{version}:
get:
operationId: getPackageVersion
summary: Get Package Version Metadata
description: Returns metadata for a specific version of an R package. Use "all" as the version to retrieve all versions.
tags:
- Packages
parameters:
- name: package
in: path
required: true
description: CRAN package name
schema:
type: string
example: ggplot2
- name: version
in: path
required: true
description: Package version string, or "all" for all versions
schema:
type: string
example: 3.4.4
responses:
'200':
description: Package version metadata
content:
application/json:
schema:
$ref: '#/components/schemas/PackageMetadata'
'404':
description: Package or version not found
/-/pkgs:
get:
operationId: listAllPackages
summary: List All CRAN Packages
description: Returns a list of all package names currently available on CRAN along with their latest versions.
tags:
- Packages
responses:
'200':
description: All CRAN packages and versions
content:
application/json:
schema:
type: object
additionalProperties:
type: string
description: Latest version string
/-/desc:
get:
operationId: listPackageDescriptions
summary: List Package Descriptions
description: Returns name, title, and version for all CRAN packages.
tags:
- Packages
parameters:
- name: limit
in: query
required: false
description: Maximum number of records to return
schema:
type: integer
example: 100
- name: skip
in: query
required: false
description: Number of records to skip for pagination
schema:
type: integer
example: 0
responses:
'200':
description: Package name-title-version list
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/PackageSummary'
/-/allvign:
get:
operationId: listPackageVignettes
summary: List All Package Vignettes
description: Returns all vignettes available for CRAN packages.
tags:
- Packages
responses:
'200':
description: Vignette list
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/VignetteSummary'
components:
schemas:
PackageSummary:
type: object
properties:
name:
type: string
description: Package name
example: dplyr
title:
type: string
description: Short title
example: A Grammar of Data Manipulation
version:
type: string
description: Latest version
example: 1.1.4
VignetteSummary:
type: object
properties:
package:
type: string
description: Package name
vignette:
type: string
description: Vignette identifier
title:
type: string
description: Vignette title
PackageMetadata:
type: object
properties:
Package:
type: string
description: Package name
example: ggplot2
Version:
type: string
description: Package version
example: 3.4.4
Title:
type: string
description: Short package title
example: Create Elegant Data Visualisations Using the Grammar of Graphics
Description:
type: string
description: Full package description
Author:
type: string
description: Package authors
Maintainer:
type: string
description: Package maintainer with email
example: Hadley Wickham <hadley@posit.co>
License:
type: string
description: Package license
example: MIT + file LICENSE
Depends:
type: string
description: Required R version and packages
Imports:
type: string
description: Imported packages
Suggests:
type: string
description: Suggested packages
Date:
type: string
format: date
description: Publication date
URL:
type: string
description: Package website URL
BugReports:
type: string
description: Bug report URL