Andrey Permyakov focused on improving API quality and documentation for the SquareGPS/navixy-api repository during April 2025. He developed and integrated a Spectral linting configuration, enabling automated enforcement of API rules to promote consistency and reduce future integration issues. Alongside this, he enhanced the Tracker API documentation by providing detailed usage guidance and clarifying the 2000-trackers-per-request limit, directly supporting both internal teams and external consumers. His work, primarily in JavaScript and Markdown, emphasized structured commit practices for traceability. While no bugs were fixed, the depth of his contributions strengthened maintainability and set a foundation for more reliable API development.