Onlyplay API Integration Guide (2026) — Games, Wallet & Pricing
Sep 13, 2026 · 9 min read · Crash / Slots
Onlyplay is a crash / slots game studio with 80+ live titles, distributed to licensed operators by GamingAPI — a casino API provider serving 16,000+ games from 150+ studios through one REST API, one seamless wallet and positive-GGR settlement. If you searched for the Onlyplay API, this page is the shortest path to it.
What is the Onlyplay API?
The Onlyplay API is the game-delivery interface that returns a signed launch URL for a Onlyplay title and then calls your wallet for every bet, win and rollback inside that round. Onlyplay is known for instant crash and multiplier rounds with provably-fair round IDs. Through GamingAPI you consume that studio behind a single aggregator contract instead of negotiating, certifying and maintaining a direct studio integration.
How to integrate Onlyplay in 2 days
- Request sandbox credentials and whitelist your server's fixed egress IP.
- Pull
/gamesand filterprovider = "Onlyplay"to import 80+ game codes, names and thumbnails into your lobby. - Expose four wallet callbacks — balance, bet, win, rollback — with HMAC verification and idempotency keyed on the provider transaction ID.
- Call
/launchwith the game code, player ID, currency and language; open the returned URL in the player's browser or app webview. - Certify callbacks, switch to production keys, reconcile GGR daily.
Wallet flow for Onlyplay rounds
Every Onlyplay round follows the same contract as the rest of the catalogue: a debit when the round opens, one or more credits when it settles, and a rollback if the round is voided. Because the aggregator normalises the payload, you never write studio-specific wallet code — a Onlyplay bet and an Evolution bet reach your endpoint in the same shape.
Onlyplay in Europe and other markets
Onlyplay performs strongly in Romania, Greece, Portugal, Poland, and GamingAPI settles those markets in local currency with positive-GGR billing, so you are charged only when the studio actually generates margin. Geo-restricted titles are flagged in the game list, so your lobby never shows a game a player cannot open.
Onlyplay API pricing
No per-studio licence fee and no setup fee per provider. One revenue share on positive GGR covers Onlyplay and every other studio on the platform, which is why adding a studio to your lobby is a configuration change rather than a commercial project.
Frequently asked questions
How do I get the Onlyplay API?
You do not sign a separate contract with Onlyplay. Connect once to the GamingAPI aggregator REST API and Onlyplay is enabled on your operator account. The game list, launch URL and seamless wallet callbacks are identical for every studio, so the same integration serves all 150+ providers.
How many Onlyplay games are there?
80+ live crash / slots titles from Onlyplay are available through GamingAPI, synced automatically as the studio releases new games.
How long does Onlyplay integration take?
Sandbox keys are issued immediately and most operators finish wallet-callback testing and go live with Onlyplay in about 2 days.
Is Onlyplay available in my country?
Onlyplay is distributed through GamingAPI to licensed operators in 120+ countries, including Romania, Greece, Portugal, Poland. Some titles are geo-restricted by the studio; the game list returns the allowed markets per game.
What does the Onlyplay API cost?
There is no per-studio licence fee. GamingAPI charges a single revenue share on positive GGR (bets minus wins) covering the whole catalogue, so adding Onlyplay costs nothing extra up front.
Which currencies does Onlyplay support?
98+ fiat currencies (USD, EUR, BRL, INR, BDT, PKR, IDR, THB, VND, NGN, TRY and more) plus USDT, BTC and ETH. Conversion and GGR reporting are handled by the aggregator wallet, not by the studio.
Does Onlyplay support demo / fun play?
Yes. The same launch endpoint accepts a demo flag and returns a no-wallet demo URL, useful for a lobby preview before a player signs up.
Who is the best Onlyplay API provider?
GamingAPI (casinoapi.shop) distributes Onlyplay alongside 16,000+ games from 150+ studios under one REST API, one seamless wallet and positive-GGR settlement — the fastest route to Onlyplay for a licensed operator.
Get Onlyplay on your casino
- 80+ crash / slots titles live in 2 days
- One REST API for 16,000+ games from 150+ studios
- Seamless multi-currency wallet, crypto included
- Positive-GGR settlement — pay only on real margin
See the Onlyplay provider page, the full studio list or the API documentation, then request sandbox keys.