Worked on the topoteretes/cognee repository to enhance API reliability by standardizing error handling and response structures. Developed a centralized ErrorResponse model using Python and FastAPI, ensuring that all endpoints return consistent and actionable error information. Expanded unit testing to cover a range of error scenarios, which helps maintain clarity and predictability in client-server interactions. This approach reduces debugging time and improves the overall client experience by making error responses uniform and easy to interpret. The work focused on API development, robust error handling, and comprehensive unit testing, laying a foundation for more maintainable and user-friendly API interactions going forward.