Project Gutenberg

aid: gutenberg
name: Project Gutenberg
description: Project Gutenberg is a free ebook library providing access to over 75,000 public domain books via the Gutendex
  REST API. The API enables developers to search and retrieve bibliographic metadata for books and authors, filter by language,
  copyright status, topic, and MIME type, and access download links for multiple formats including EPUB, Kindle, HTML, and
  plain text. Project Gutenberg has pioneered free ebooks since 1971 and the Gutendex API makes its catalog programmatically
  accessible via a simple JSON REST interface with no authentication required.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/gutenberg/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Books
- Ebooks
- Public Domain
- Literature
- Library
- Metadata
- EPUB
apis:
- aid: gutenberg:gutendex
  name: Gutendex API
  description: Gutendex is a JSON web API for Project Gutenberg ebook metadata. It provides access to the catalog of 75,000+
    public domain books with filtering by language, copyright status, topic, author lifespan, and MIME type. The API returns
    paginated JSON results including book titles, authors, subjects, bookshelves, download formats, and download counts. No
    authentication or API key is required.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://gutendex.com/
  baseURL: https://gutendex.com
  tags:
  - Books
  - Ebooks
  - Public Domain
  - Metadata
  - Literature
  properties:
  - type: Documentation
    url: https://gutendex.com/
  - type: OpenAPI
    url: https://gutendex.com/books
common:
- type: Website
  url: https://www.gutenberg.org/
- type: Documentation
  url: https://gutendex.com/
- type: GitHubOrg
  url: https://github.com/gutenbergtools
- type: Blog
  url: https://www.gutenberg.org/help/
- type: Pricing
  url: https://gutendex.com/
- type: StatusPage
  url: https://www.gutenberg.org/
- type: X
  url: https://twitter.com/gutenberg_org
- type: Plans
  url: plans/gutenberg-plans-pricing.yml
- type: RateLimits
  url: rate-limits/gutenberg-rate-limits.yml
- type: FinOps
  url: finops/gutenberg-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com