Protocol Zero (ZRO) abstracts the process of paying for gas away from end users which minimizes UX friction for Dapps. With ZRO, ethless clients can interact with Ethereum smart contracts without users needing ETH for transaction fees. ZRO is powered by OpenGsn capable contracts making it a decentralized system that improves dapp usability without sacrificing security.

Example use cases for ZRO:

• Privacy: Enabling ETH-less withdrawal of tokens sent to stealth addresses
• Pay for gas in any ERC-20 tokens: Allow users to pay for gas in ERC-20 tokens that support permit function
• Pay for gas off-chain: Allow users to pay for gas indirectly via a L2 rollup or a credit card
• Onboarding: Allow dapps to subsidize the onboarding process for new users.