Open Trivia DB

The Open Trivia Database provides a completely free JSON API for use in programming projects. Use of this API does not require an API key, just generate the URL and use it in your own application to retrieve trivia questions across multiple categories, difficulties, and types.

Open Trivia DB publishes 3 APIs on the APIs.io network: Categories API, Questions API, and Tokens API. Tagged areas include Free, Games, Questions, and Trivia.

Open Trivia DB’s developer surface includes documentation and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub

21.8/100 emerging ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemium

3 APIs

Free Games Questions Trivia

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 21.8/100 · emerging

Contract Quality 12.4 / 25

Developer Ergonomics 1.9 / 20

Access Clarity 0.0 / 20

Operational Transparency 1.0 / 13

Contract Governance 0.0 / 12

Discoverability 6.5 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 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 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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/open-trivia-db: 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 3

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

Rate Limits 1

Documented rate limits and quota policies.

Open Trivia Db Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: open-trivia-db
name: Open Trivia DB
description: The Open Trivia Database provides a completely free JSON API for use in programming projects. Use of this API
  does not require an API key, just generate the URL and use it in your own application to retrieve trivia questions across
  multiple categories, difficulties, and types.
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
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/open-trivia-db.png
tags:
- Free
- Games
- Questions
- Trivia
created: '2025-02-12'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/open-trivia-db/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: open-trivia-db:open-trivia-db-categories-api
  name: Open Trivia DB Categories API
  description: Retrieve available trivia categories.
  humanURL: https://opentdb.com/api_config.php
  baseURL: https://opentdb.com
  tags:
  - Categories
  properties:
  - type: OpenAPI
    url: openapi/open-trivia-db-categories-api-openapi.yml
  - type: Documentation
    url: https://opentdb.com/api_config.php
- aid: open-trivia-db:open-trivia-db-questions-api
  name: Open Trivia DB Questions API
  description: Retrieve trivia questions.
  humanURL: https://opentdb.com/api_config.php
  baseURL: https://opentdb.com
  tags:
  - Questions
  properties:
  - type: OpenAPI
    url: openapi/open-trivia-db-questions-api-openapi.yml
  - type: Documentation
    url: https://opentdb.com/api_config.php
- aid: open-trivia-db:open-trivia-db-tokens-api
  name: Open Trivia DB Tokens API
  description: Manage session tokens to track served questions.
  humanURL: https://opentdb.com/api_config.php
  baseURL: https://opentdb.com
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/open-trivia-db-tokens-api-openapi.yml
  - type: Documentation
    url: https://opentdb.com/api_config.php
common:
- type: AgenticAccess
  url: agentic-access/open-trivia-db-agentic-access.yml
- type: DomainSecurity
  url: security/open-trivia-db-domain-security.yml
- type: Website
  url: https://opentdb.com
- type: Documentation
  url: https://opentdb.com/api_config.php
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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Open Trivia DB

Kin Score

APIs 3

Open Trivia DB Categories API

Open Trivia DB Questions API

Open Trivia DB Tokens API

Open Collections 5

API Collection

Open Trivia DB Categories API

Open Trivia DB Categories Questions API

Open Trivia DB Categories Tokens API

Open Trivia DB API

Pricing Plans 1

Open Trivia Db Plans Pricing