Meta-Transactions

Meta-transactions are a technique that allows a user to interact with a decentralized application without paying gas fees directly. In this model, the user signs a transaction request, which is then passed to a relayer or a third-party service.

This service pays the gas fee to the network and submits the transaction on the user's behalf. Because the transaction is signed by the user, the smart contract can verify the intent and execute the action, even though the transaction was initiated by the relayer.

This effectively decouples the action from the payment of the gas fee, making it possible for applications to subsidize costs or allow users to pay in other tokens. Meta-transactions are a key component of the effort to improve the usability of decentralized finance, as they allow for a more seamless and familiar experience for users who are not comfortable managing gas tokens.