#substack
Live, measured metrics for the hashtag #substack from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #substack
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 2026-11-08 05:51 UTC866 uses by 49 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-11-08 05:51 UTCNo related tags with measured usage found for #substack.
Live pulse
measured · mastodon.social (Mastodon tag timeline) · fetched 2026-11-08 05:51 UTCEverything below is measured over the latest 40 public posts (spanning ~9 hours).
Posting hours (UTC) — busiest: 21:00
Languages: English (40)
Avg boosts / post: 0
Top of the latest posts
Demonstration Leader Spotlight: Clark in Cary by Engaged Defenders 4 Democracy - November 7, 2026 https://engageddefendersfordemocracy.substack.com/p/demonstration-leader-spotlight-clark #Substack #OwnYourFeed #FederatedReader
Championing the Beautiful Struggle by Paul Matthews from Wise AI - November 7, 2026 https://paulmatthews.substack.com/p/championing-the-beautiful-struggle #Substack #OwnYourFeed #FederatedReader
Now We Act: With Rep. Madeleine Dean on Language and Power by Timothy Snyder from \Thinking about...\ - November 7, 2026 https://snyder.substack.com/p/now-we-act-with-rep-madeleine-dean #Substack #OwnYourFeed #FederatedReader
What “substack” means
WikipediaSubstack is an American online platform that provides publishing, payment, analytics, and design infrastructure to support subscription-based content, including newsletters, podcasts, and video. It allows writers to send digital content directly to subscribers. Founded in 2017, Substack is headquartered in San Francisco. The company has faced criticism for its content moderation policies, as well as security breaches involving user data.
“Substack” on Wikipedia (CC BY-SA) →#substack across platforms
every network with a public tag surfaceFollow #substack 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/substack