Superchain EVM Rollup · Gasless Ready

OP Mainnet (Optimism) Payment Gateway — Superchain USDC, USDT & OP Checkout

Anchor your Superchain commerce stack on OP Mainnet (Chain ID 10). Accept native USDC, USDT, DAI, ETH, and OP with 2-second confirmations, ERC-2612 Permit sponsorship, and 99.5% direct wallet finality.

Open Free OP Sepolia (11155420) Workspace 🧪 Interactive Checkout Sandbox ⚖️ Compare Gas & Finality 🌐 All 12 Networks

Chain ID / Scope10 (Mainnet) / 11155420 (OP Sepolia)

Confirmation SLA~2 seconds

Typical Network Gas~$0.004–$0.008

XPayr Split99.5% Merchant / 0.5% Fee

OP Mainnet (Optimism) Settlement Architecture

EIP-4844 Blob-Optimized Gas

Post-Dencun blob fees keep OP Mainnet checkouts under a penny while inheriting Ethereum L1 security roots.

Unified EVM Wallet Reuse

Receive payments on Base, Arbitrum, Polygon, and OP Mainnet into the exact same merchant EVM address or Safe configuration.

OP Sepolia QA

Run automated CI/CD payment and webhook tests against Chain ID 11155420.

Supported Wallets & Exchange QR Behavior

Wallets: Rabby, MetaMask, Rainbow, Safe Multisig + Exchange QR
Direct OP Mainnet withdrawals supported across Binance, Coinbase, OKX, Bybit, and Kraken.

Best-Fit Merchant Verticals

Developer tools, open-source licensing (/license-kit), SaaS subscriptions, and Superchain Web3 ecosystems.

Supported Assets on OP Mainnet (Optimism)

Accept USDC → Accept USDT → Accept DAI → Accept ETH → Accept OP →

API v1 Session Payload (`optimism`)

Pin preferred_network: "optimism" or omit it so buyers can switch freely across your enabled chains.

POST https://xpayr.com/api/v1/payments
Authorization: Bearer sk_test_your_workspace_key
Content-Type: application/json

{
    "amount": "149.00",
    "currency": "USD",
    "preferred_network": "optimism",
    "preferred_token": "USDC",
    "order_id": "ord_optimism_9041",
    "underpayment_tolerance_pct": 1,
    "webhook_url": "https://merchant.example.com/webhooks/xpayr",
    "metadata": {
        "network": "optimism",
        "settlement_split": "99.5_pct_merchant_wallet"
    }
}

⚙️ Generate Code in 8 Languages 🔔 Webhook Event Schemas

Explore All 12 Supported Blockchain Rails

Solana Base (Coinbase L2) Arbitrum One Polygon PoS TRON (TRC-20) BNB Smart Chain (BEP-20) Ethereum Mainnet (ERC-20) Avalanche C-Chain TON (The Open Network) Bitcoin (BTC) Circle Arc Network

OP Mainnet (Optimism) Checkout FAQ

Can I use the same merchant EVM wallet across OP Mainnet, Base, and Arbitrum?

Yes for standard EOA hardware/software wallets (Ledger, Trezor, MetaMask, Rabby). For Safe multisigs, ensure your Safe is deployed on Chain ID 10 before routing OP Mainnet funds.