Circle Multichain Checkout

Built by Nithin Reddy

A merchant-focused npm package for seamless cross-chain USDC payments using Circle's CCTP V2 protocol. Accept USDC payments from any supported EVM chain and receive them on your preferred destination chain.

Features

• Cross-Chain USDC Transfers: Accept payments from any supported EVM chain
• CCTP V2 Integration: Powered by Circle's Cross-Chain Transfer Protocol
• Merchant-Friendly: Simple integration with single line
• Multi-Chain Support: Currently supports Ethereum Sepolia, Avalanche Fuji, Base Sepolia, and more
• Coming Soon: Solana mainnet and Devnet support for complete cross-chain across all Major Chains

Supported Chains

• Unichain Sepolia
• Ethereum Sepolia
• Avalanche Fuji C-Chain
• Base Sepolia
• Sonic
• Worldchain
• Arbitrum Fuji

Installation

npm install circle-multichain-checkout
# or
yarn add circle-multichain-checkout

Quick Start

import { CheckoutPage } from 'circle-multichain-checkout';

  <CheckoutPage
      merchantAddress="0xcfb31219238fe98eff27BBae2a00cEEaf0bE8BE5"
      preferredChain={84532}
      amount="99.99"
      onSuccess={(txHash) => console.log('Payment successful:', txHash)}//handle successful payment
      onError={(error) => console.error('Payment failed:', error)}//handle custom error
    />

How It Works

1. Customer selects source chain (where they have USDC)
2. System burns USDC on source chain using CCTP V2
3. Circle provides attestation for the cross-chain transfer
4. USDC is minted on your preferred destination chain
5. You receive USDC on your specified address

Use Cases

• E-commerce: Accept USDC payments from any chain
• SaaS Subscriptions: Cross-chain recurring payments
• NFT Marketplaces: Multi-chain payment support
• DeFi Protocols: Cross-chain liquidity provision
• Gaming: In-game purchases with any chain's USDC

Built by Nithin Reddy