#openletter

Live, measured metrics for the hashtag #openletter 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 #openletter

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.

$23.52/ year · 10-character #name
Claim #openletter — $23.52/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 40
0.1
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 2026-09-12 16:39 UTC
0
09-06
0
09-07
0
09-08
0
09-09
0
09-10
0
09-11
0
09-12

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 2026-09-12 16:39 UTC
#openletters
0 uses · 0 accounts / 7d
#openlettertosoldiers
0 uses · 0 accounts / 7d
#openletterexposespak
0 uses · 0 accounts / 7d
#openlettertoduke
0 uses · 0 accounts / 7d
#openletteraileaders
0 uses · 0 accounts / 7d
#OpenLettersFromTheHeart
0 uses · 0 accounts / 7d
#openletteraboutnhs
0 uses · 0 accounts / 7d
#openlettertosantaclaus
0 uses · 0 accounts / 7d
#openletterstoamericascompanies
0 uses · 0 accounts / 7d
#openletteroracle
0 uses · 0 accounts / 7d
#openletterscientists
0 uses · 0 accounts / 7d
#openlettercontroversy
0 uses · 0 accounts / 7d

Live pulse

measured · mastodon.online (Mastodon tag timeline) · fetched 2026-09-12 16:39 UTC

Everything below is measured over the latest 40 public posts (spanning ~3826 hours).

Posting hours (UTC) — busiest: 09:00

00:0012:0023:00

Languages: English (32) · German (5) · Spanish (1)

Avg boosts / post: 1

Top of the latest posts

  • @mrmasterkeyboard but probably the first step should draft a standard proposal or at least a kind of #openletter.for a new #openhardware standard proposal, to see how many people are really interested.

    Ivan G.@[email protected]♥ 1↻ 02026-06-30 11:59 UTCView post →

  • #usa #israel #iran : #warofaggression / #internationallaw / #university / #poll „The joint US-Israel military strikes on Iran has drawn criticism. Over 100 international law experts from institutions including Harvard, Yale, Stanford and th

    Gerd_Brodowski@[email protected]♥ 1↻ 22026-04-03 16:08 UTCView post →

  • #usa #israel #palestine : #military / #collaboration / #civilsociety / #appeal / #openletter / #documentation „Long List of Organizations Asks Congress Not to Merge U.S. and Israeli Militaries“ https://worldbeyondwar.org/long-list-of-organi

    Gerd_Brodowski@[email protected]♥ 0↻ 12026-09-04 06:42 UTCView post →

#openletter across platforms

every network with a public tag surface

Follow #openletter 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/openletter