Free JSON API for online slot game data. No API key, no authentication, no signup. Just fetch the data you need.
The slot.report API provides structured access to one of the largest independent online slot databases available. Every data point — from RTP values and volatility ratings to max win caps, bonus mechanics and grid layouts — is sourced from official provider specifications and cross-verified against multiple industry databases.
The dataset powers slot.report, our independent slot review platform covering 500+ in-depth reviews for the German market. The API itself contains 6,000+ slots from 82 providers and is updated weekly. Whether you're building a comparison tool, running data analysis, or training a model — the data is free and ready to use.
| Field | Type | Example | Coverage |
|---|---|---|---|
| name | string | "Gates of Olympus" | 100% |
| slug | string | "gates-of-olympus" | 100% |
| provider | string | "Pragmatic Play" | 100% |
| provider_slug | string | "pragmatic-play" | 100% |
| rtp | float | 96.5 | 99% |
| volatility | string|null | "high" | 97% |
| volatility_score | int|null | 3 | 97% |
| max_win | int|null | 5000 | 94% |
| max_win_category | string|null | "high" | 94% |
| features | array|null | ["free-spins", "multiplier", "wilds", "tumble"] | 96% |
| mechanic | string|null | "cluster-pays" | 87% |
| theme | string|null | "mythology" | 95% |
| grid | string|null | "5x3" | 82% |
| paylines | int|null | 243 | partial |
| has_bonus_buy | bool|null | true | 36% |
| has_jackpot | bool|null | true | partial |
| release_date | string|null | "2021-02-25" | 84% |
| year | int|null | 2021 | 84% |
| hit_frequency | float|null | 23.5 | 27% |
| min_bet | float|null | 0.1 | 79% |
| max_bet | float|null | 100 | 79% |
| Field | Type | Description | Coverage |
|---|---|---|---|
| rtp_tiers | array|null | All RTP configurations, e.g. [96.21, 94.24, 91.25] | partial |
| summary | string|null | Short description of the slot (German) | ~10% |
| score | float|null | Editorial rating 1-10 | ~10% |
| bonus_buy_prices | array|null | Bonus buy options with name and price multiplier | ~9% |
| bonus_trigger_rates | array|null | Average spins to trigger each bonus | ~5% |
| series | string|null | Slot series name, e.g. "Le Series" | rare |
low (1) → medium (2) → high (3) → very-high (4) → extreme (5). The volatility_score field provides the numeric equivalent for sorting.
const res = await fetch('https://slot.report/api/v1/slots.json');
const data = await res.json();
// All high-volatility slots with 10,000x+ max win
const highVol = data.results.filter(s =>
s.volatility === 'extreme' && s.max_win >= 10000
);
console.log(`${highVol.length} extreme slots found`);
import requests
data = requests.get('https://slot.report/api/v1/slots.json').json()
# Average RTP by provider
from collections import defaultdict
rtps = defaultdict(list)
for s in data['results']:
if s['rtp']:
rtps[s['provider']].append(s['rtp'])
for provider, values in sorted(rtps.items()):
print(f"{provider}: {sum(values)/len(values):.2f}% avg RTP")
# All slots
curl -s https://slot.report/api/v1/slots.json | jq '.count'
# Single slot
curl -s https://slot.report/api/v1/slots/starburst.json | jq '{name, rtp, volatility, max_win}'
# All Hacksaw Gaming slots
curl -s https://slot.report/api/v1/providers/hacksaw-gaming.json | jq '.results[].name'
Use slot data directly in WordPress — no coding required. The official plugin provides shortcodes and a Gutenberg block to display slot cards, data tables, inline RTP values and slot counts.
[slot_card slug="gates-of-olympus"] [slot_table provider="hacksaw-gaming" limit="10" sort="max_win"]
Available on WordPress.org: SlotReport – Slot Game Data
The API is designed for reasonable use. There are no hard limits for normal usage, but automated bulk scraping may be throttled. Search engine bots and AI crawlers are not rate-limited.
If you need higher throughput for a specific project, download the full dataset from /api/v1/slots.json once and cache it locally.
Slot data is collected from official provider websites and verified against multiple secondary sources including SlotCatalog, Bonustiime, AskGamblers, BigWinBoard, and SlotsJudge. The database covers 82 providers including Pragmatic Play, Play'n GO, NetEnt, Red Tiger, Hacksaw Gaming, Nolimit City, BGaming, ELK Studios, Big Time Gaming, Quickspin, Relax Gaming, Blueprint Gaming, iSoftBet, Endorphina, Habanero, Booming Games, GameArt, Games Global, Betsoft, Thunderkick and more.
RTP values represent the highest available tier. Many providers offer casinos multiple RTP configurations — the actual RTP at a specific casino may be lower.
Volatility ratings are normalized to a 5-point scale across all providers, as each studio uses different native scales.
The API covers slots from 82 game studios. Use the /api/v1/providers/{slug}.json endpoint to filter by provider.
| Provider | Slots | Avg RTP | Endpoint |
|---|---|---|---|
| Pragmatic Play | 817 | 96.39% | pragmatic-play |
| Play'n GO | 445 | 96.24% | playn-go |
| Red Tiger | 339 | 95.82% | red-tiger |
| BGaming | 293 | 96.51% | bgaming |
| NetEnt | 244 | 96.36% | netent |
| iSoftBet | 226 | 96.03% | isoftbet |
| Endorphina | 218 | 95.96% | endorphina |
| Gamomat | 196 | 96.11% | gamomat |
| Hacksaw Gaming | 165 | 96.32% | hacksaw-gaming |
| Blueprint Gaming | 165 | 95.87% | blueprint-gaming |
| Nolimit City | 147 | 96.10% | nolimit-city |
| ELK Studios | 151 | 94.83% | elk-studios |
| Booming Games | 146 | 95.80% | booming-games |
| Quickspin | 141 | 96.33% | quickspin |
| Habanero | 140 | 96.80% | habanero |
| Relax Gaming | 132 | 95.96% | relax-gaming |
| Thunderkick | 117 | 95.76% | thunderkick |
| GameArt | 118 | 96.11% | gameart |
| Games Global | 117 | 95.70% | games-global |
| Betsoft | 109 | 95.66% | betsoft |
| Big Time Gaming | 92 | 96.34% | big-time-gaming |
| Push Gaming | 83 | 96.38% | push-gaming |
| Yggdrasil Gaming | 77 | 95.77% | yggdrasil-gaming |
| Popiplay | 77 | 96.56% | popiplay |
| Just For The Win | 76 | 95.36% | just-for-the-win |
Plus 57 additional studios. See /api/v1/providers.json for the complete list with all 82 providers.
The database is updated at least once per week, usually more frequently. New slot releases are added within days of launch. The last_updated field in /api/v1/status.json shows when the data was last refreshed.
This is an independent, non-commercial project. Updates may occasionally be delayed by a few days, but the goal is to keep the data as current as possible.
The API is free to use. Public-facing projects that display this data must include a visible link back to slot.report. This is a condition of access, not a request.
Use this credit or an equivalent visible mention:
Slot data by <a href="https://slot.report/">slot.report</a>
The link must be visible to end users — in a footer, data source note, or similar location. Hidden attribution (HTML comments, meta tags) does not qualify.
Usage is monitored. IPs from projects displaying the data publicly without attribution may be blocked.
This API is built and maintained by slot.report — an independent German slot review site. We analyze online slots with real data, not marketing copy.
The API exists because no free, open slot data source existed before. If you find it useful, tell others about it.