DeFi Power-User Favorite · Pre-Sign Simulation

Accept محفظة Rabby Crypto Payments — Security-Simulated EVM & L2 Checkout

Built for security-conscious DeFi founders, developers, and Web3 treasuries. XPayr unverified-proxy-free splitter contracts pass Rabby pre-transaction balance simulations cleanly with zero blind-signing prompts.

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Checkout FlowPre-Sign Balance-Change Simulation Web3

Protocol StandardEIP-6963 · Deterministic EVM Calldata & Permit

Tolerance / Split100% Simulation-Verified 99.5% / 0.5% Split

XPayr Fee0.5% Flat · $0/mo · Non-Custodial

Rabby Integration Architecture

Clean Pre-Execution Balance Delta in Rabby Simulation Engine

Rabby simulates every EVM transaction before signing. XPayr atomic splitters emit standard ERC-20 Transfer events so Rabby displays the exact -100.00 USDC outflow with green security checks.

Zero Unlimited Token Approvals Required

XPayr never requests infinite uint256 ERC-20 allowances. Approvals or EIP-2612 Permits are scoped strictly to the exact invoice amount, eliminating post-checkout approval revocation chores.

Automatic Per-dApp Chain Selection

Rabby switches to Base, Arbitrum, Optimism, Polygon, or Ethereum automatically without interrupting other DeFi tabs open in the buyer browser.

High-Conversion Merchant Use Cases

Developer tools, RPC/API infrastructure, DeFi analytics SaaS, TGE launchpads, and security-audited B2B checkouts.

Supported شبكة البلوكتشينs

Arbitrum Base Optimism Polygon Ethereum BNB Smart Chain Avalanche Circle Arc

Supported Stablecoins & Tokens

USDC USDT EURC DAI ETH ARB OP BNB AVAX

REST API v1 Session Payload

Create a checkout session pre-optimized for Rabby via POST https://xpayr.com/api/v1/payments or the xpayr_create_payment_session في MCP:

{
    "amount": "99.00",
    "currency": "USD",
    "preferred_network": "arbitrum",
    "preferred_token": "USDC",
    "checkout_mode": "web3_one_click",
    "underpayment_tolerance_pct": 1,
    "underpayment_tolerance_max_usd": 0.5,
    "order_id": "ord_rabby_4082",
    "webhook_url": "https://merchant.example.com/webhooks/xpayr",
    "metadata": {
        "wallet_corridor": "rabby",
        "settlement_model": "99.5_pct_non_custodial"
    }
}

Related Engineering Blueprints

أداة تصور التقسيم الذكي → هندسة الأمان → Fee Split Trust Spec → البنية غير الوصائية →

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محفظة Rabby Checkout — الأسئلة المتكررة

Does XPayr ever ask Rabby users for unlimited ERC-20 token approvals?

Never. Every XPayr checkout scopes token approval or EIP-2612 Permit strictly to the exact session invoice amount.

Why do Web3 power users prefer Rabby on XPayr checkouts?

Rabby shows the exact simulated token balance change and verifies recipient contract behavior prior to signing — confirming XPayr non-custodial 99.5% / 0.5% split transparency.

Can merchants also sign مركز المدفوعات الصادرة batch dispersions with Rabby?

Yes! Merchants love using Rabby with مركز مدفوعات XPayr (/payouts) because Rabby previews the exact aggregate multi-recipient batch outflow before hardware or extension signing.