Data Dragon — Free League of Legends Game Data API (No Key)

TL;DR

Data Dragon is Riot Games' official static data distribution system for League of Legends. It provides CDN-hosted JSON files containing all champion stats, item descriptions, rune data, summoner spells, and profile icons, plus the actual image assets (splash art, champion portraits, item icons). Data is versioned by patch number and available in multiple languages. No API key is needed — everything is served as static files from a CDN.

Quick start: https://ddragon.leagueoflegends.com/cdn/14.3.1/data/en_US/champion.json

No API key needed — just make a request!

How to Use This API

1. List All Champions

https://ddragon.leagueoflegends.com/cdn/14.3.1/data/en_US/champion.json

Returns every champion with ID, name, title, blurb, tags (roles), stats, and image info.

2. Get Specific Champion — Ahri

https://ddragon.leagueoflegends.com/cdn/14.3.1/data/en_US/champion/Ahri.json

3. Get All Items

https://ddragon.leagueoflegends.com/cdn/14.3.1/data/en_US/item.json

4. Champion Splash Art URL Pattern

https://ddragon.leagueoflegends.com/cdn/img/champion/splash/Ahri_0.jpg

5. JavaScript — Find Mage Champions

fetch('https://ddragon.leagueoflegends.com/cdn/14.3.1/data/en_US/champion.json')
  .then(r => r.json())
  .then(data => {
    const champs = Object.values(data.data);
    const mages = champs.filter(c => c.tags.includes('Mage'));
    mages.forEach(c => console.log(`${c.name} — ${c.title}`));
  });

6. Python — Compare Stats

import requests

data = requests.get(
    'https://ddragon.leagueoflegends.com/cdn/14.3.1/data/en_US/champion.json'
).json()

champs = data['data'].values()
top_hp = sorted(champs, key=lambda c: c['stats']['hp'], reverse=True)[:5]
for c in top_hp:
    print(f"{c['name']}: {c['stats']['hp']} HP")

Browse champions: https://ddragon.leagueoflegends.com/cdn/14.3.1/data/en_US/champion.json

Try This URL Now

Frequently Asked Questions

How do I find the latest version?: Check https://ddragon.leagueoflegends.com/api/versions.json — this returns an array of available CDN versions, with the first entry being the latest.
What languages are supported?: Data is available in many languages: en_US, de_DE, es_ES, fr_FR, it_IT, ja_JP, ko_KR, pl_PL, pt_BR, ru_RU, zh_CN, zh_TW, and more. Replace en_US in the URL path.
What data categories exist?: Per version: champion.json, item.json, summoner.json, rune.json, profileicon.json, map.json, and language.json.
How do I access champion images?: Champion loading screen: /cdn/img/champion/loading/{name}_0.jpg, splash art: /cdn/img/champion/splash/{name}_0.jpg, and icon: /cdn/{version}/img/champion/{name}.png.
How often does Data Dragon update?: Data Dragon is updated with each League of Legends patch (roughly every two weeks). The version number corresponds to the patch number (e.g., 14.3.1).
What format does the data use?: All data is in JSON format. The champion data includes stats, spells, passive, skins, and recommended item builds for ARAM and classic modes.

API Details

API URL: https://ddragon.leagueoflegends.com/cdn
Documentation: developer.riotgames.com/docs/lol
Category: Entertainment
Authentication: Not Required
Geographic Coverage: Global

What You Can Build

Champion guide browser with stats, spells, and recommended builds
Team composition analyzer showing role tags and synergy
Item build path visualizer for different champion matchups
Patch notes companion that highlights stat changes between versions
LoL wiki or database site with splash art and ability descriptions