Returns a catalog of all available datasets in the CMS Provider Data repository. Each entry follows the Project Open Data standard (DCAT) and includes rich metadata: dataset title, description, keywords, release dates, update schedules, contact information, and download URLs. This is your discovery endpoint - call it to find which datasets are available before querying their actual data. The response includes dataset identifiers (like '23ew-n7w9') that you'll need for subsequent data queries.
Original spec description
Returns a list of all available datasets in the CMS Provider Data catalog. Each dataset contains metadata such as title, description, keywords, and distribution information.