Abstract: An off-chain gas management system allows Web3 developers to cover gas fees for their users. When a user wants to complete a blockchain transaction, the system receives a sponsorship request through an API and checks if the operation qualifies under the developer's gas sponsorship policy. Policies include spending limits, approved addresses, and time restrictions. If approved, the system creates a cryptographic signature that authorizes transfer of the gas fee amount. An on-chain contract validates the signature before covering the gas fees. The system includes a user interface for creating and managing policies with configurable spending controls and address restrictions. Advanced features use machine learning to allocate funds based on user value, detect fraud, classify transaction types, optimize cryptocurrency purchases, and predict when funds will run out.