Gregory's Server
Finally figured out why #nodebb posts weren't queryable via Mastodon, turns out it does Content-Type checking, and I was inadvertently breaking #ActivityPub spec by sending in application/json when I should've been sending in "application/activity+json" or 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'
Latter doesn't play nicely with express, so using the former and all's well!
Full credit to @bouncepaw who gave me key to figuring it out! 🏅