This should be able to give you the ability to simply count the number of errors on a page. Given that this is the home page it would be at least as good as what GSA is doing now.
Describe the solution you'd like
I prefer Purple A11y. It's got better reporting and crawling features in general.
Is your feature request related to a problem? Please describe.
This might be better in a Validation parameter request but not sure. That should have more context.
It would be great to have some assessment of accessibility of the list of URLs you're crawling.
With either of these tools you can crawl a sitemap.xml file for accessibility errors. https://github.com/GovTechSG/purple-a11y https://pa11y.org - axe shoudl be added, rather than just html cs
This should be able to give you the ability to simply count the number of errors on a page. Given that this is the home page it would be at least as good as what GSA is doing now.
Describe the solution you'd like
I prefer Purple A11y. It's got better reporting and crawling features in general.
Describe alternatives you've considered
I've been exploring ways to extend purple a11y
Additional context