Buyer Signs Off-Chain Permit
For supported ERC-2612 tokens (such as native USDC on active EVM Layer-2 routes), the buyer signs a gas-free EIP-712 typed message in MetaMask, Rabby, or Coinbase Wallet.
Never Lose a USDC Buyer Who Has $0.00 of ETH for Gas.
One of the biggest conversion killers in Web3 checkout is a buyer holding $250 USDC in their wallet with zero native ETH, POL, or BNB to pay a $0.01 network fee. XPayr's Fee Delegation & Permit Checkout lets you sponsor eligible ERC-2612 token approvals with strict budget caps — while settling 99.5% directly to your wallet.
Merchant Budget Guardrails
XPayr checks your minimum invoice floor, per-tx gas ceiling, and daily sponsorship cap before relaying the permit + 99.5% / 0.5% split on-chain.
Automatic Standard Flow Fallback
If a token does not implement ERC-2612 permits or policy limits are reached, checkout automatically presents standard Web3 wallet tx or Exchange QR transfer.
Model L2 Gas Sponsorship ROI
On Base, Arbitrum, Optimism, and Polygon, sponsoring 100 recovered checkouts typically costs less than a single cup of coffee.
Estimated L2 Relayer Gas (~$0.015 / tx)
$3.75 / mo
Gross Checkout Volume Facilitated
$20,000.00 / mo
Net 99.5% settled directly to your wallet: $19,900.00
Gasless Checkout — Frequently Asked Questions
How does XPayr permit-based gasless checkout work without taking custody?
When a buyer holds an ERC-2612 permit-compatible stablecoin (such as native USDC on supported EVM networks where an XPayr gasless router is deployed and your merchant Fee Delegation policy is active), the buyer signs a typed EIP-712 off-chain permit approval. The relayer submits the atomic settlement transaction on-chain while routing 99.5% directly to your merchant wallet — XPayr never holds your private keys or pools balances.
What happens if a token or wallet does not support ERC-2612 permits?
Checkout never breaks. Whenever a selected token lacks ERC-2612 permit support, a network gasless router is not active, or your daily sponsorship budget cap is reached, XPayr seamlessly falls back to standard 1-Click Web3 wallet execution or Direct Exchange QR transfer.
How can merchants cap their daily gas sponsorship spend?
Inside Merchant Dashboard > Fee Delegation, you control minimum eligible order value (e.g., orders ≥ $25), maximum gas sponsored per transaction, rolling 24-hour USD budget caps, and allowed EVM networks (such as Base, Arbitrum, Optimism, and Polygon where L2 gas is typically under $0.01–$0.03).
How does Circle Arc handle gas without native volatile tokens?
On Circle Arc, USDC itself is the native gas token — eliminating volatile gas token friction at the protocol layer. Explore our dedicated Arc USDC Gas Calculator at /tools/arc-usdc-gas-calculator.