#headcannon
Live, measured metrics for the hashtag #headcannon from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #headcannon
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-09-25 20:26 UTCNo measured public usage for #headcannon in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-09-25 20:26 UTCNo related tags with measured usage found for #headcannon.
Live pulse
measured · Mastodon tag timeline · fetched 2026-09-25 20:26 UTCNo recent public posts found for #headcannon on Mastodon. Nothing measured, so nothing shown.
What “headcannon” means
WikipediaSonic Mania is a 2017 platform game developed by Christian Whitehead, PagodaWest Games and Headcannon and published by Sega. Produced in commemoration of the Sonic the Hedgehog series' 25th anniversary, Sonic Mania pays homage to the original Sega Genesis Sonic games, featuring speedy side-scrolling gameplay. It takes place over 13 levels, including several redesigned from past games. The story follows Sonic, Tails and Knuckles as they venture to defeat Doctor Eggman and his robotic henchmen, th
“Sonic Mania” on Wikipedia (CC BY-SA) →#headcannon across platforms
every network with a public tag surfaceFollow #headcannon straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/headcannon