InChlKey and QCFractal record identification, but can also be used to quickly pull down the associated records to access the raw data. This enables users to do quick local filtering for specific molecule data, including proprietary molecules, without contacting the QCFractal instance until the raw record data is required. Figure gives a broad overview of the modular plugin-based architecture of QCSubmit, which enables efficient large-scale communication with private or public QCFractal instances.