#activitypub

Live, measured metrics for the hashtag #activitypub from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #activitypub

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.

$10.85/ year · 11-character #name
Claim #activitypub — $10.85/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
68
Uses / 7 days
Mastodon
62
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0.5/hr
Recent pace
Mastodon · last 40
4.6
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mastodon.online (Mastodon public tags API) · fetched 2026-10-28 20:12 UTC
8
10-22
13
10-23
5
10-24
13
10-25
10
10-26
7
10-27
12
10-28

68 uses by 62 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 2026-10-28 20:12 UTC

No related tags with measured usage found for #activitypub.

Live pulse

measured · mastodon.online (Mastodon tag timeline) · fetched 2026-10-28 20:12 UTC

Everything below is measured over the latest 40 public posts (spanning ~87 hours).

Posting hours (UTC) — busiest: 13:00

00:0012:0023:00

Languages: English (28) · German (5) · American English (1) · French (1) · Czech (1)

Avg boosts / post: 8.4

Top of the latest posts

  • Wird mal wieder Zeit für dieses Schaubild. :-) Das Fediverse ist weit mehr als Mastodon. Ob Microblogging, Videos, Bilder, Blogs oder Veranstaltungen: Unterschiedliche Dienste können über offene Protokolle miteinander kommunizieren. Dezentr

    Kuketz-Blog 🛡@[email protected]♥ 127↻ 1172026-10-28 06:18 UTCView post →

  • I'm slowly working my way deeper into the technical side of activity pub. But I'm sure there's already plenty of you, who already made a deep dive. What's a discovery you found most interesting or maybe even unexpected? #fedihelp #activityp

    bleeptrack@[email protected]♥ 40↻ 512026-10-25 18:48 UTCView post →

  • 🚀 Direct Messages have arrived in #Vernissage! The latest version is now live on vernissage.photos⁠, and the updated iOS app with Direct Messages support is also available on the App Store! Next up: improving support for mentions without

    Vernissage@[email protected]♥ 9↻ 182026-10-26 18:45 UTCView post →

#activitypub across platforms

every network with a public tag surface

Follow #activitypub 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.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

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/activitypub