Worked on the eternalai-org/truly-open-ai repository to enhance smart contract usability and error handling within the AI721 contract. Focused on Solidity development, the work involved exposing internal contract state through new getter functions, allowing external systems and developers to access relevant data more efficiently. Refactored variable names throughout the contracts to improve code clarity and maintainability, supporting future development and collaboration. Introduced a dedicated error interface for AI721, streamlining error reporting and making contract interactions more robust. The approach emphasized low-risk, targeted improvements in blockchain and smart contract architecture, with all changes aimed at increasing reliability and developer experience.