#activitiypub

Live, measured metrics for the hashtag #activitiypub 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 #activitiypub

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.

$5.00/ year · 12-character #name
Claim #activitiypub — $5.00/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
32
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 32
0.5
Avg reactions / post
Mastodon · last 32
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mastodon.online (Mastodon public tags API) · fetched 2026-10-16 20:48 UTC
0
10-10
0
10-11
0
10-12
0
10-13
0
10-14
0
10-15
0
10-16

0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · mastodon.online (Mastodon public search API) · fetched 2026-10-16 20:48 UTC
#ActivitiyPubhttps
0 uses · 0 accounts / 7d

Live pulse

measured · mastodon.online (Mastodon tag timeline) · fetched 2026-10-16 20:48 UTC

Everything below is measured over the latest 32 public posts (spanning ~34762 hours).

Posting hours (UTC) — busiest: 20:00

00:0012:0023:00

Languages: English (16) · German (10) · Swedish (1) · Italian (1) · British English (1)

Avg boosts / post: 3.3

Top of the latest posts

  • What if web-browsers could render the ActivityPub / ActivityStreams JSON-LD source-code into the document it represents? Fediverse clients can do it — why can't browsers? I previously created a small-net / small-web browser client named Spa

    @reiver ⊼ (Charles) :batman:@[email protected]♥ 6↻ 122026-04-28 23:12 UTCView post →

  • 1/ I have been thinking about how to create a Fediverse Game using the ActivityPub 'Question' object. I have some different ideas, but I think I want to try something simpler and quicker to make first — before attempting a magnum opus 🙂 He

    @reiver ⊼ (Charles) :batman:@[email protected]♥ 3↻ 92026-04-24 17:14 UTCView post →

  • I think you could create a (certain type of) video game using the ActivityPub 'Question'. https://www.w3.org/TR/activitystreams-vocabulary/#dfn-question #ActivitiyPub #ActivityStreams #FediDev #FediGames #Games #VideoGames

    @reiver ⊼ (Charles) :batman:@[email protected]♥ 3↻ 102026-04-23 22:45 UTCView post →

#activitiypub across platforms

every network with a public tag surface

Follow #activitiypub 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/activitiypub