Worked on expanding the C API surface for the facebookresearch/faiss repository, focusing on enabling external language bindings for the PCAMatrix component. Developed and integrated getter and setter functions for the balanced_bins parameter, providing both header declarations and source implementations in C++. This work improved interoperability by allowing external tools and languages to read and modify PCAMatrix parameters through the C API, streamlining future binding development. The effort centered on C API design and library development, with no major bug fixes during the period. The approach emphasized commit-driven development and cross-language readiness, enhancing the ecosystem’s integration capabilities for PCAMatrix.