Worked on enhancing the robustness of memory retrieval in the Unique-AG/ai repository, focusing on backend and API development using Python. Addressed a critical bug where empty SDK responses previously caused crashes by updating the API to return None for not-found results, rather than raising errors. Introduced explicit type changes and added guards in both the response and memory-finding functions to ensure safer downstream integrations. Expanded unit testing to cover empty-response scenarios, validating all changes with a comprehensive test plan and maintaining clean linting. This work improved error handling and reliability for services depending on memory retrieval functionality.