JAVASCRIPT SDKv0.3.20

Build with Playmos.

Add payments and skill contests to your game. Start with the JavaScript SDK, then connect your backend.

Accept a payment

Run a one-cent test payment. Read its chain-verified result.

Follow the quickstart

Add skill contests

Prepare your studio’s pool, admit paid attempts and settle results.

Explore contests

How the pieces fit#

01Your gameCalls the browser SDK

→

02Playmos serviceVerifies chain state

→

03Your backendGrants once, after verification

The SDK is a client library. The API is the Playmos service. Your game backend stays responsible for purchase fulfillment, player admission and score authority. Playmos never needs your studio’s private signing keys.

Choose a path#

You want to…	Start here
Sell an item or unlock	IAP: pay → verify → grant
Run skill contests	Studio pool → series/epoch → entry → settle
Publish in Playmos	Reviewed, scanned release + publication proof

Open the playground

Build with your coding agent#

Let your agent inspect your project and implement Playmos with a documented workflow. Discover SDK skills or discover the guides through llms.txt.

Find your integration surface#

Start with web integration, Unity and game engines, or server languages. Continue with your own studio keys. Economies and HTTP payment challenges are optional, separate products.

Keep buildingYour first payment