Developed and integrated HD Map Lanelet and Object Data Services within the WATonomous/wato_monorepo, enabling the retrieval of detailed lanelet and object information to support enhanced navigation capabilities. The work involved designing new API endpoints and updating the C++ codebase to handle richer lane-level and object data, with a focus on map visualization and ROS compatibility. Accompanying documentation was created and existing files were updated to ensure clarity and maintainability. Configuration patches and repository housekeeping were also performed, contributing to delivery hygiene and system readiness. The feature set laid the groundwork for more advanced navigation and mapping functionality.