@tchambers @activitypubblueskybridge OK I think this can be hosted somewhat https://github.com/go-fed/testsuite
Apparently it was hosted here
https://test.activitypub.rocks/
Then here
https://test.activitypub.dev/
I'll try to deploy this tomorrow on my sub domain, if I can get it, we just need a sexy domain to have it used by the community!