Paymaster
An ERC-4337 contract that can pay gas costs for eligible smart-account operations.
In more detail
A paymaster lets someone other than the user cover an operation's network cost under defined rules. An app might sponsor a first transaction or arrange payment through another asset. The work still costs gas, and sponsorship can have conditions or limits, so “gasless” usually describes the user's experience rather than a free network.
How you might use it
Your first app transaction has no ETH charge to you because its paymaster covers the gas after checking that the operation qualifies.
Got a way to make Paymaster click?
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