https://mtmorgan.github.io/cellxgenedp/

The ‘cellxgenedp’ Bioconductor package enables discovery and download of CELLxGENE resources for single-cell transcriptome data.

The ‘hca’ package (Bioconductor) provides a similar interface to Human Cell Atlas data resources.

A recent update addressed changes to the API exposed by CELLxGENE; previous versions of the package will stop working when the previous API is removed.