Universal Gasless

EIP-7702

EIP-7702 is an Ethereum upgrade included in the Pectra network update. It allows an Ethereum Externally Owned Account (EOA) to be upgraded to a smart contract.

Normally, EOAs are limited in what they can do, whereas smart contract wallets can have custom logic, such as social recovery, batched transactions, or sponsored fees. EIP-7702 bridges this gap. It effectively lets a regular wallet "upgrade itself on the fly" and run programmable actions without losing compatibility with existing systems.

This means new capabilities like account abstraction, transaction sponsorship, and modular wallet logic become available, all while keeping the familiar EOA structure under the hood.

The Universal Gasless feature

EIP-7702 is the foundation of Fireblocks’ new Universal Gasless feature. Universal Gasless resolves many of the limitations of its predecessor, Limited Gasless, which only supported gasless transfers for specific tokens such as USDC via EIP-3009 and gasless minting and burning actions in tokenization via EIP-2771. Now, with EIP-7702, Universal Gasless supports all Ethereum-based assets, including any ERC-20, ERC-721, or ERC-1155 token.

Here’s how it works:

• During your first gasless transaction, your vault account is seamlessly upgraded into a smart contract wallet using EIP-7702.
• This smart contract version of your account can now support sponsored transactions. This means that you can set up a designated vault locally or using an external workspace. You can also use the Fireblocks relay, where Fireblocks will pay the gas for you, even if you do not hold any ETH.
• After the transaction, you will notice that your vault account has been upgraded.

From that point on, after your vault is upgraded, you can send gasless transactions and have the gas paid by the relay you define.

Furthermore, once other EVM-compatible chains (such as Arbitrum, Polygon, Avalanche, etc.) integrate EIP-7702, Universal Gasless will also extend across those networks, bringing frictionless, ETH-free transactions to the broader blockchain ecosystem.