Harish contributed to both the mdn/content and numpy/numpy repositories, focusing on documentation accuracy, build system reliability, and standards compliance. He corrected the WebGL bufferSubData documentation to match the WebGL 1 specification, clarifying parameter requirements using Markdown and C++. In numpy/numpy, Harish improved build hygiene by updating Doxygen configurations and removing obsolete tags, ensuring compatibility with newer toolchains. He also enhanced HTTP documentation in mdn/content by supporting multi-preference headers per RFC standards and resolving glossary reference warnings. Throughout, Harish applied skills in API design, HTTP standards, and build system management, delivering targeted improvements that increased maintainability and developer clarity.