#hardsf

Live, measured metrics for the hashtag #hardsf 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 #hardsf

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.

$520.70/ year · 6-character #name
Claim #hardsf — $520.70/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
0.3
Avg reactions / post
Mastodon · last 40

Day-by-day usage

measured · mastodon.online (Mastodon public tags API) · fetched 2026-07-27 15:30 UTC
0
07-21
0
07-22
0
07-23
0
07-24
0
07-25
0
07-26
0
07-27

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 2026-07-27 15:30 UTC
#hardsff
0 uses · 0 accounts / 7d

Live pulse

measured · mastodon.online (Mastodon tag timeline) · fetched 2026-07-27 15:30 UTC

Everything below is measured over the latest 40 public posts (spanning ~7436 hours).

Posting hours (UTC) — busiest: 21:00

00:0012:0023:00

Languages: English (27) · German (7) · French (4) · Polish (1) · Japanese (1)

Avg boosts / post: 1.3

Top of the latest posts

  • And the 15-degree temperature drop that's supposed to be an extinction-level event. The last glacial maximum was about that. Just... basic worldbuilding. It's annoying me more than it should, probably. But this is supposed to be hard sci-fi

    Jeff Lilly@[email protected]♥ 3↻ 12026-05-05 23:46 UTCView post →

  • 💥 E-BOOK DEAL For the love of space, don't miss this deal! *CRITICAL MASS (sequel to Delta-V) is now $1.99 for a limited time only! *Typically retails for $14.99 #spacethriller #HardSF #cislunar #ISRU

    Daniel Suarez@[email protected]♥ 3↻ 112026-04-13 06:47 UTCView post →

  • Cool video of a seemingly #hardsf space combat https://www.youtube.com/watch?v=gSePJj31iqk

    Olivia Vespera@[email protected]♥ 2↻ 22025-11-26 19:51 UTCView post →

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/hardsf