name: Fatcat
description: Fatcat is a versioned, user-editable open catalog of published research works maintained by the Internet Archive. It tracks bibliographic metadata, links papers to full-text copies, and preserves access to scholarly publications including journal articles, conference proceedings, and datasets across millions of research works.
image: https://fatcat.wiki/static/fatcat_logo.svg
url: https://fatcat.wiki/
tags:
  - Scholarly
  - Research
  - Academic
  - Open Access
  - Bibliographic
  - Publications
  - Metadata
  - Internet Archive
created: "2026-06-13"
modified: "2026-06-13"
specificationVersion: "0.19"
apis:
  - name: Fatcat REST API
    description: RESTful API providing access to Fatcat's open scholarly catalog, enabling lookup and management of bibliographic metadata for research works including releases, containers, creators, files, filesets, and webcaptures across millions of publications.
    image: https://fatcat.wiki/static/fatcat_logo.svg
    humanURL: https://api.fatcat.wiki/redoc
    baseURL: https://api.fatcat.wiki/v0
    tags:
      - Scholarly
      - Research
      - Bibliographic
      - Open Access
      - Metadata
    properties:
      - type: Documentation
        url: https://guide.fatcat.wiki/http_api.html
      - type: OpenAPI
        url: https://raw.githubusercontent.com/internetarchive/fatcat/master/fatcat-openapi2.yml
      - type: Redoc
        url: https://api.fatcat.wiki/redoc
      - type: GitHubRepository
        url: https://github.com/internetarchive/fatcat
      - type: PricingPage
        url: https://guide.fatcat.wiki/http_api.html
      - type: Plans
        url: plans/plans.yml
      - type: RateLimits
        url: rate-limits/rate-limits.yml
      - type: FinOps
        url: finops/finops.yml
    contact:
      - FN: Fatcat / Internet Archive
        email: ""
        url: https://gitter.im/internetarchive/fatcat
    meta:
      - name: x-authentication-type
        value: Bearer Token (Macaroon)
      - name: x-api-version
        value: v0
      - name: x-qa-base-url
        value: https://api.qa.fatcat.wiki/v0
maintainers:
  - FN: Internet Archive
    url: https://archive.org/
    email: info@archive.org