Paymaster
a paymaster is an entity or smart contract that sponsors transaction fees on behalf of users, enabling gasless transactions. This mechanism enhances user experience by allowing interactions with the blockchain without requiring users to hold the native cryptocurrency for gas fees.
For web3 developers, integrating a paymaster can lower the barrier to entry for users, making applications more accessible, especially to those unfamiliar with managing cryptocurrencies. Implementing paymaster functionality involves setting up smart contracts that handle fee payments and establishing policies to determine which transactions qualify for sponsorship.