More than a CLI tool, I'd like to have documentation about how to use the CodeMeta metadata that we extract, sort of "typing information" for the content of the various intrinsic metadata tables.
It might be something as simple as:

• a statement that the stuff you find in there conforms to the CodeMeta ontology
• a list of all the keys you can find (given we only support a susbet of them)

That will be enough to write client code that exploits the metadata.

(but of course if you want to have a CLI tool to generate the info, sure; I just wanted to highlight here that the end goal is the doc)