Gas Abstraction
Learn how Uniswap smart wallet enables gasless transactions through ERC-4337 account abstraction.
Gas abstraction allows users to transact without needing to have a balance of ETH to pay for gas fees. Instead, a third party called a bundler can cover or manage those fees on their behalf.
How It Works
Uniswap smart wallet implements ERC-4337: Account Abstraction Using Alt Mempool, a widely adopted account abstraction standard.
EntryPoint Configuration
By default, EntryPoint v0.8 (0x4337084D9E255Ff0702461CF8895CE9E3b5Ff108) is enabled on the account. The root signer can disable or change this, but doing so incorrectly can lead to loss of funds.
Reference
You can view EntryPoint deployment details here. EntryPoint is maintained as a public-good contract by the account abstraction community.