How Web3 protocols and dApps can sponsor user transaction fees and accept fee payments in arbitrary ERC-20 stablecoins using Paymasters.
Under ERC-4337, transactions do not require the sending wallet to hold native ETH for gas. Instead, specialized Paymaster smart contracts can sponsor transaction fees entirely or accept payment in USDC, USDT, or project tokens.
To accelerate consumer adoption of post-quantum security, decentralized protocols can deploy promotional Paymasters that subsidize the extra calldata gas associated with post-quantum signatures, providing end users with free, quantum-safe transactions.
Configuring rate limits, off-chain validation signatures, and staking mechanisms to protect Paymaster capital from draining attacks by automated bots.