To test the web application, five dataset overview pages (annotated with JSON-LD) from the catalog of open datasets released by NanoSafety Cluster projects were used for assessment. The selected pages provide an overview of five nanosafety related datasets published on Zenodo and also annotated, as part of this work, with variables measured according to the maturity indicators of MI list 10 (caLIBRAte criteria). Thus, their annotation is machine-readable and can be assessed using the NSDRA web application. The assessor application fetches the URL of the dataset overview page, scrapes its content and identifies the JSON-LD markup.