EIP-7702 support
EIP-7702 is an Ethereum upgrade introduced in the Prague hardfork that allows a regular wallet (EOA—Externally Owned Account) to behave like a smart contract wallet without changing address, migrating funds, or creating a new seed phrase. The delegation persists until explicitly revoked. EIP-7702 is supported on Linea as of Beta v5.0.
What it enables
| Capability | What it means in practice |
|---|---|
| Transaction batching | Approve + swap + deposit in a single transaction |
| Gas sponsorship | A third party pays the gas fee—users need no ETH to transact |
| Pay gas in ERC-20 | Users pay gas in USDC, DAI, or any ERC-20 token |
| Session keys | Grant a dapp time-limited, scoped permissions without exposing your main key |
| Social recovery | Set up guardian-based recovery or multisig on your existing address |
| And more | Spending limits, recurring payments, alternative authentication (passkeys, multisig), and other programmable account behaviors |
How it works
EIP-7702 introduces a new transaction type 0x04. This transaction includes an authorizationList
field—a signed list of tuples (chain_id, contract_address, nonce)—where each entry authorizes
the EOA to delegate to a specific smart contract.
When the EVM processes a type 0x04 transaction, it permanently sets the account's bytecode to point
to the delegated contract. The delegation persists after the transaction until explicitly revoked.
Revoking a delegation
Send a new type 0x04 transaction pointing the delegation to address(0). This removes the
bytecode and returns the account to a normal EOA.
The delegation does not expire after one transaction. It remains active for all future interactions
with your account until you explicitly revoke it by sending a new type 0x04 transaction pointing
to address(0).
Important considerations
Receiving ETH after delegation
Once your EOA delegates to a contract, it effectively has code. If that contract does not implement
a receive() or fallback() function, plain ETH transfers to your address will revert. Make sure
the contract you delegate to can handle incoming ETH if you expect to receive it.
EIP-7702 enables both gas sponsorship (where a third party covers transaction fees) and gasless transactions (where users pay fees in ERC-20 tokens).
Hardware wallet limitation
As of March 2026, some hardware wallets cannot sign authorizationList entries. Gas sponsorship
and smart account activation may not be available for all hardware wallet users.