Open Trivia Database
opentdb.com · Developer Tools
Free trivia question API — 4,000+ verified questions across 24 categories and 3 difficulty levels. No API key required.
Authentication
No authentication requiredFree to use with no key needed.
Sample Requests
GET
Get trivia questions
Get 5 medium computer science multiple-choice questions.
https://opentdb.com/api.php?type=multiple&amount=5&category=18&difficulty=medium
Hover any highlighted part to learn what it does
curl -X GET "https://opentdb.com/api.php?type=multiple&amount=5&category=18&difficulty=medium"
import requests
params = {
"type": "multiple",
"amount": "5",
"category": "18",
"difficulty": "medium"
}
response = requests.get(
"https://opentdb.com/api.php",
params=params,
)
print(response.json())const url = new URL('https://opentdb.com/api.php');
url.searchParams.set('type', 'multiple');
url.searchParams.set('amount', '5');
url.searchParams.set('category', '18');
url.searchParams.set('difficulty', 'medium');
const response = await fetch(url);
const data = await response.json();
console.log(data);package main
import (
"fmt"
"io"
"net/http"
"net/url"
)
func main() {
baseURL, _ := url.Parse("https://opentdb.com/api.php")
q := baseURL.Query()
q.Set("type", "multiple")
q.Set("amount", "5")
q.Set("category", "18")
q.Set("difficulty", "medium")
baseURL.RawQuery = q.Encode()
targetURL := baseURL.String()
req, _ := http.NewRequest("GET", targetURL, nil)
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}require "net/http"
require "json"
uri = URI("https://opentdb.com/api.php")
uri.query = URI.encode_www_form({
"type" => "multiple",
"amount" => "5",
"category" => "18",
"difficulty" => "medium"
})
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"
req = Net::HTTP::Get.new(uri)
res = http.request(req)
puts JSON.parse(res.body)<?php
$url = "https://opentdb.com/api.php?" . http_build_query([
"type" => "multiple",
"amount" => "5",
"category" => "18",
"difficulty" => "medium"
]);
$opts = ["http" => [
"method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));Postman Setup Guide
- No API key needed
- GET https://opentdb.com/api.php?amount=5
- Categories: 9=General, 18=Science:Computers, 21=Sports, 23=History, 31=Anime
- Difficulty: easy, medium, hard
- Type: multiple (4 choices) or boolean (true/false)
What can you build with Open Trivia Database?
Open Trivia Database is a Developer Tools API. Developers commonly use developer tools APIs for:
- automating code review and quality checks
- integrating CI/CD pipelines and build systems
- managing feature flags and A/B tests
- monitoring errors and application performance
- generating and validating test data
No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. Open Trivia Database is free to use, making it a low-risk choice to experiment with.
New to APIs? Read our beginner's guide