Open Source Game SDK

x402,For Games

X402 made for Game Engines

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Deploy Everywhere

Support for all major gaming platforms and frameworks

Unity

Full-featured game engine integration

Unreal Engine

Enterprise-grade game development

Instant game deployment

WebGL

Browser-based gaming

Farcaster

Decentralized gaming

Mobile

iOS & Android support

Gx402 Facilitator

A trusted backend service that verifies and settles Gx402 payment flows across supported networks (EVM / SVM)

Instance URL

The primary facilitator endpoint for payment verification and settlement

https://api.gx402.org

Stack

Node.js, Express, TypeScript

Purpose

Verify & settle payment flows

Networks

EVM & SVM

Core Responsibilities

Verify

Validate payment payloads against requirements to prevent invalid transactions

Settle

Sign and submit transactions using configured signers (EVM or SVM)

Report Supported

Provide information on available payment kinds, networks, and fee payers

Open Facilitator Docsapi.gx402.org

Client

Any application initiating a GX402 payment: web apps, mini-apps, mobile apps, or backend services. Generates payment payloads and requirements.

Signer Layer

Handles blockchain signatures using EVM_PRIVATE_KEY (EVM) or SVM_PRIVATE_KEY (Solana) for transaction settlement.

Verification

Validates that payment payloads satisfy requirements and rules before processing. Prevents invalid or poisoned transactions.

Blockchain RPC

Communicates directly with blockchain nodes to settle transactions on EVM and SVM networks.

Facilitator Instance: api.gx402.org

Meets Developer Experience

GX402 is more than a system — it's your execution layer for speed, scalability, and control. Every line optimized. Every process accelerated.

Unity & Unreal AAA Engine

Farcaster App Connect

Web3 Wallet Integration

OpenAPI & Thirdweb Nexus

👥 Live Multiplayer Support

Developer-Friendly SDK

✔ Booting GX402 core modules...
✔ Validating runtime environment.
✔ Network link established with Solana devnet.
✔ Payment facilitator verified.
✔ Loading hyperspeed renderer.
✔ Syncing AI control systems.
✔ Deploying real-time telemetry protocols.
✔ System integrity: 100%.
ℹ Configuration updated:- x402/core/engine.ts

✔ Booting GX402 core modules...
✔ Validating runtime environment.
✔ Network link established with Solana devnet.
✔ Payment facilitator verified.
✔ Loading hyperspeed renderer.
✔ Syncing AI control systems.
✔ Deploying real-time telemetry protocols.
✔ System integrity: 100%.
ℹ Configuration updated:- x402/core/engine.ts

✔ Booting GX402 core modules...
✔ Validating runtime environment.
✔ Network link established with Solana devnet.
✔ Payment facilitator verified.
✔ Loading hyperspeed renderer.
✔ Syncing AI control systems.
✔ Deploying real-time telemetry protocols.
✔ System integrity: 100%.
ℹ Configuration updated:- x402/core/engine.ts

Power. Precision. Speed.

GX402 brings instant SVM & EVM payments and ultra-fast verification to your apps — with one unified API.

Lightning Transactions

Payments verified in milliseconds on Solana & EVM's — no waiting, no delays.

Optimized for Performance

Built with zero-latency architecture to handle high transaction throughput effortlessly.

Unified API

One SDK for every platform — web, Unity, Unreal, and mobile.

Game-Ready Integration

Plug GX402 directly into your games for seamless on-chain in-app purchases.

Mobile-First Design

Smooth payment flows for both iOS and Android users — optimized for speed and UX.

Open Source & Transparent

Fully open implementation — inspect, modify, and integrate freely.

Ready to Build?

Join the community and start building games with gx402 today

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