Imaging Data Commons Overview Query and download public cancer imaging data from the National Cancer Institute Imaging Data Commons (IDC). No authentication required for data access. Expected network access: IDC metadata is reachable three ways — a bundled local DuckDB index (offline after installation; additional indices are fetched from GitHub and clinical tables from S3), or the hosted IDC service over MCP or REST ( , no authentication). File downloads use public GCS ( ) and AWS S3 ( ) — no authentication required. DICOMweb access uses either the public IDC proxy ( , no auth) or the Google…