CMS.gov vs Covid-19 India

CMS Provider Data Catalog exposes hundreds of Medicare quality, cost, and comparison datasets (hospitals, nursing homes, dialysis facilities, and more) through a DKAN-based metastore and datastore API that returns JSON by default and CSV on request, with no signup required. A live GET against the dataset-listing and datastore query endpoints succeeds with no credentials. A live Origin-header probe against the datastore query endpoint returns no Access-Control-Allow-Origin header on either a GET or an OPTIONS preflight, and since access needed no key at all, the stored 'API Key' auth was corrected to 'None'.

A volunteer-run archive of India's COVID-19 statistics — state- and district-level confirmed/recovered/deceased counts and vaccination totals — served as JSON (v4 endpoints) and CSV from data.covid19india.org. The original api.covid19india.org project and its per-request JSON routes were deprecated in August 2021 in favor of these v4/CSV endpoints; the data itself is a static historical snapshot, last modified October 2025 per the response headers, not a live daily feed. A live GET against data.covid19india.org returns no Access-Control-Allow-Origin header, resolving the stored 'unknown' cors to 'no'.