Developed and integrated Swagger UI for the peviitor-ro/api repository, delivering interactive API documentation and testing capabilities to streamline onboarding and improve API usability for both internal developers and external partners. Leveraging PHP and Swagger/OpenAPI, the work focused on enhancing REST API documentation and facilitating PR-driven collaboration within the team. The integration was merged following quality assurance, with no major bugs reported and stability confirmed post-release. This feature reduced support cycles and established a foundation for future API tooling and automation initiatives, demonstrating proficiency in API development, documentation best practices, and continuous integration workflows within a PHP-based environment.