During September 2025, Manuel Ruiz focused on backend development and API integration for the OpenNebula/one-apps repository, specifically addressing reliability issues in OneGate client-server communication. He implemented a centralized approach to HTTP Content-Type handling by introducing an @content_type variable, defaulting to 'application/json', and ensured its consistent application to POST and PUT requests. Working primarily in Ruby, Manuel’s solution resolved inconsistencies that previously affected server interactions, resulting in more robust and predictable API behavior. Although the work centered on a single bug fix rather than new features, it demonstrated careful attention to protocol standards and backend reliability within the project.