Worked on expanding the C API coverage in the facebookresearch/faiss repository by exposing the IndexBinaryFlat class for use in C applications. This involved adding new header and implementation files, ensuring seamless integration and interoperability with C-based systems. The work focused on enabling direct access to IndexBinaryFlat from C workflows, thereby broadening the usability of the library for a wider range of projects. Leveraged expertise in C API development, C++ programming, and software architecture to deliver this feature, which was reviewed and merged through a structured code review process. No bug fixes were recorded during this period, emphasizing targeted feature delivery.