Every blockchain transaction has a network cost, also known as a gas fee. Generally, whoever initiates a transaction pays this cost. On some transactions, Uniswap Labs may cover this cost on behalf of users. This is known as sponsorship.
Sponsorship is enabled by ERC-4337, and only wallets that support this standard will be eligible. This includes most delegated Smart Wallets.
Here is an example of a transaction with a sponsored gas fee:
Uniswap Labs retains sole discretion to change or update which transactions are sponsored at any time.
Learn more: