Developed custom authorization headers support for the 0xPlaygrounds/rig repository, enabling the system to honor user-defined Authorization headers and support diverse authentication schemes such as those required by Yandex Cloud. The work involved refining the API key header insertion logic in Rust to prevent conflicts between automatic and manual headers, ensuring that manual overrides are respected when http_headers() is used. This approach maintained full backward compatibility, preserving existing behavior when no manual headers are present. The update broadened integration options for OpenAI-compatible providers and improved the robustness of API development workflows by reducing the need for manual customization.