As I thought. I haven’t tried it, but here is one github Mastodon Tor project. I Do not know if it works but, I did find a post to a onion link. However I could not get it to load. https://gist.github.com/hcmiya/40f3810108c954b3a24017a78844e0b6
Clean, civil, clueful Mastodon instance for easyDNS members, techies and weirdos.