jService

aid: jservice
name: jService
description: >-
  jService is an open source Ruby on Rails trivia API that serves approximately 200,000
  Jeopardy! questions, answers, and categories scraped from the J! Archive fan site. The
  original public deployment at jservice.io is no longer operational, but the project
  (sottenad/jService, MIT licensed) remains available for self-hosting against PostgreSQL.
  The API exposes random clues, final Jeopardy clues, filtered clue queries, category
  listings, single-category lookup, and invalid-clue reporting under /api/*.
url: https://github.com/sottenad/jService
image: https://avatars.githubusercontent.com/u/957383?v=4
specificationVersion: '0.20'
created: '2026-05-28'
modified: '2026-05-30'
x-source: public-apis/public-apis
x-category: "Games & Comics"
x-type: opensource
x-status: deprecated
x-status-reason: >-
  Original hosted endpoint at jservice.io is offline (parked / for-sale holding page).
  The open source project is unarchived and still maintainable; last push 2024-01-30.
x-tier: 3
x-tier-reason: bulk-registered-from-public-apis
x-governance: community
x-license: MIT
x-language: Ruby
x-data-source: J! Archive (j-archive.com)
tags:
  - Games And Comics
  - Trivia
  - Jeopardy
  - Open Source
  - Ruby
  - Rails
  - Public APIs
apis:
  - name: jService Trivia API
    description: >-
      REST/JSON API exposing Jeopardy! clues, categories, and random questions, designed
      for trivia apps, study tools, chatbots, and game shows. Self-hosted against
      PostgreSQL; the historical public endpoint at jservice.io is offline.
    humanURL: https://github.com/sottenad/jService
    baseURL: http://jservice.io
    image: https://avatars.githubusercontent.com/u/957383?v=4
    tags:
      - Trivia
      - Jeopardy
      - Games And Comics
    properties:
      - type: Documentation
        url: https://github.com/sottenad/jService#readme
      - type: SourceCode
        url: https://github.com/sottenad/jService
      - type: OpenAPI
        url: openapi/jservice-openapi.yml
      - type: JSONSchema
        url: json-schema/jservice-clue-schema.json
      - type: JSONSchema
        url: json-schema/jservice-category-schema.json
      - type: JSONStructure
        url: json-structure/jservice-clue-structure.json
      - type: JSONStructure
        url: json-structure/jservice-category-structure.json
      - type: JSONLD
        url: json-ld/jservice-context.jsonld
      - type: SpectralRules
        url: rules/jservice-rules.yml
      - type: Capabilities
        url: capabilities/trivia-game.yaml
      - type: Examples
        url: examples/jservice-random-example.json
      - type: Vocabulary
        url: vocabulary/jservice-vocabulary.yml
      - type: Status
        url: https://jservice.io
        x-status: offline
      - type: License
        url: https://github.com/sottenad/jService/blob/master/LICENSE.txt
        x-license: MIT
      - type: Authentication
        x-required: false
      - type: RateLimit
        x-documented: false
    contact:
      - FN: Steve Ottenad
        url: https://github.com/sottenad
common:
  - type: Website
    url: https://github.com/sottenad/jService
  - type: SourceCode
    url: https://github.com/sottenad/jService
  - type: PublicAPIsListing
    url: https://github.com/public-apis/public-apis
  - type: License
    url: https://github.com/sottenad/jService/blob/master/LICENSE.txt
  - type: DataSource
    url: https://j-archive.com
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com