During November 2024, Gaurav developed the Client Subscription Management feature for the EnergyMashupLab/eml-cts repository, establishing a foundation for client-level subscription control and future monetization. He designed and implemented new RESTful API endpoints and request/response types in Java, refactored existing controllers, and introduced client-specific subscription data classes to support per-client data management. The work focused on backend development, emphasizing maintainability, extensibility, and clear data contracts rather than bug fixes. By restructuring the API and data models, Gaurav enabled more efficient client onboarding and set the stage for scalable subscription management within the EnergyMashupLab/eml-cts platform.