Open Trivia DB website screenshot

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
34.4/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemium
3 APIs
FreeGamesQuestionsTrivia

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 34.4/100 · thin
Contract Quality 14.2 / 25
Developer Ergonomics 1.7 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 6.5 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 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 0 / 4
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.

Open Trivia DB Categories API

Retrieve available trivia categories.

Open Trivia DB Questions API

Retrieve trivia questions.

Open Trivia DB Tokens API

Manage session tokens to track served questions.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Open Trivia DB API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Open Trivia Db Plans Pricing

3 plans

PLANS

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.

Open Trivia Db Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Open Trivia Db Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Open Trivia Db Agentic Access

5 operations

5 operations · 0 acting

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)

apis.yml Raw ↑ 
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: '0.19'
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