Motivation
I want to use Flat data to track my internet connection speed at home. I can't do that from inside a GitHub Action. I could expose the data via HTTP, but that would require exposing a computer on my network to the internet. I want to run flat on a cron on a computer and push the data to a GitHub repository.
Unfortunately, flat doesn't seem to be particularly easy to consume because it's an unpublished Node.js package.
Approach
Have you considered making the source of flat GitHub Action available as a Deno package? Deno can even build a binary that would make using flat very easy locally.