#posthorn
Live, measured metrics for the hashtag #posthorn from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #posthorn
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 2026-09-26 01:50 UTCNo measured public usage for #posthorn 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 2026-09-26 01:50 UTCNo related tags with measured usage found for #posthorn.
Live pulse
measured · Mastodon tag timeline · fetched 2026-09-26 01:50 UTCNo recent public posts found for #posthorn on Mastodon. Nothing measured, so nothing shown.
What “posthorn” means
Wiktionary · Wikipediaposthorn
- nounA type of brass horn used to signal the arrival or departure of a postrider or mailcoach.
The post horn is a valveless cylindrical brass instrument with a cupped mouthpiece. The instrument was used to signal the arrival or departure of a post rider or mail coach. It was used by postilions of the 18th and 19th centuries.
“Post horn” on Wikipedia (CC BY-SA) →#posthorn across platforms
every network with a public tag surfaceFollow #posthorn 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/posthorn