Architecture

The xPlug ecosystem is designed around one simple goal: to make on-chain payments accessible and effortless for everyone.

It connects three powerful layers xPlug SDK, xPlug Pay, and xPlug Facilitators all working together through x402 on Solana.

The Three Core Components

xPlug SDK

The developer layer — a toolkit that makes integrating x402 payments into Solana dApps simple and secure.

  • Provides verified payment functions.

  • Handles transaction validation automatically.

  • Connects directly with Facilitators for guaranteed delivery.

Developers build faster with less code payments just work.

xPlug Pay

The user layer a no-code platform for everyone.

  • Lets users or merchants create instant payment links.

  • Powered by the same x402 verification as the SDK.

  • Perfect for creators, sellers, and communities.

Plug, share, and get paid no coding required.

xPlug Facilitator

The infrastructure layer the backbone that keeps xPlug always-on and gasless.

  • Ensures 99.9% uptime and instant routing.

  • Verifies and signs payments before recording them on-chain.

  • Supports custom payment tokens beyond USDC.

  • Covers transaction fees dynamically for gasless user experience.

Facilitators make xPlug reliable, scalable, and ready for mass adoption.

How They Work Together

  1. User (Payer) initiates a payment using xPlug Pay, the no-code interface for sending verified crypto payments.

  2. Merchant / App (Receiver) integrates xPlug SDK, enabling automatic receipt, verification, and tracking of payments within their app.

  3. Both interact through the xPlug Facilitator, which handles:

    • Routing and verifying transactions

    • Covering gas fees automatically (gasless)

    • Maintaining 99.9% uptime for real-time confirmation

  4. The x402 Protocol validates each transaction on-chain, ensuring transparency and immutability.

  5. The Solana blockchain finalizes settlement — funds move directly from payer to receiver, instantly and verifiably.

Why This Architecture Works

This architecture connects both technical and non-technical sides of Web3 in one ecosystem:

  • Users can pay easily through xPlug Pay

  • Merchants can integrate payments via xPlug SDK

  • The Facilitator guarantees reliability and gasless operation

  • x402 + Solana handle all verification and final settlement

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