Karesh Amal contributed to the scverse/anndata repository by implementing Array-API compatibility, enabling AnnData to interoperate with array backends such as JAX and CuPy. He updated core data access patterns, including indexing and subsetting logic, to support array-api structures and ensure seamless integration with existing workflows. His work included expanding the test suite to validate compatibility across different array backends, laying a foundation for broader ecosystem integration and improved workflow flexibility. Using Python and leveraging skills in data analysis and data structures, Karesh delivered a focused feature that enhances AnnData’s extensibility, though the scope was limited to a single feature.