Viewing every data file in a GitHub Repository?

[frosencrantz]

I want Visidata to use alternative URLs for some sites. @ajkerrigan had an article about how to create a new Pypi handler in Visidata to read Pypi JSON data, for example
pypi:visidata would redirect to https://pypi.org/project/visidata/. (See https://dev.to/ajkerrigan/data-exploration-quick-wins-with-visidata-13lh/)

Simon Willison shows how to use a simple API to open every CSV file in a GitHub repository in Datasette given only the URL for the GitHub repository. See https://observablehq.com/@simonw/open-every-csv-file-in-a-github-repository-in-datasette-lite

I was trying to figure out where this could be done with Visidata? If I run vd https://github.com/saulpw/visidata I would like to be able to explore all the datafiles in a GitHub repository rather than using the VisiData http/html viewer.

I like to avoid custom url schemes since I might receive the URL via the links of another http/html page.

Is there a good way to customize VisiData to do this?