Jan-Eike Golenia developed a custom API endpoint for the sapcc/nova repository, enabling efficient retrieval of all instance UUIDs. By designing the endpoint to query only the UUID column, Jan-Eike reduced both database load and data transfer, directly addressing performance bottlenecks in resource-intensive operations. The implementation incorporated policy management to enforce secure access, ensuring compliance with internal security standards. Working primarily with Python and leveraging expertise in API development and database interaction, Jan-Eike delivered a focused solution that optimizes data handling for the consistency nanny. The work demonstrates a targeted approach to performance and security within OpenStack environments.