#pupil

Live, measured metrics for the hashtag #pupil 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 #pupil

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.

$1,129.43/ year · 5-character #name
Claim #pupil — $1,129.43/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
0.2
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mas.to (Mastodon public tags API) · fetched 2026-10-16 14:06 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 · mas.to (Mastodon public search API) · fetched 2026-10-16 14:06 UTC

Live pulse

measured · mas.to (Mastodon tag timeline) · fetched 2026-10-16 14:06 UTC

Everything below is measured over the latest 40 public posts (spanning ~19137 hours).

Posting hours (UTC) — busiest: 08:00

00:0012:0023:00

Languages: English (35) · German (2)

Avg boosts / post: 0.4

Top of the latest posts

  • Technical debt, infrastructure concerns at software companies, and NixOS – that's what our last TechTalkThursday was all about in September. 💬 This time, we again had three external speakers: Patrick Scheller, Lukas Lehmann, and Lena Fuhri

    Nine Internet Solutions AG@[email protected]♥ 7↻ 32025-10-15 09:00 UTCView post →
  • Day 9: Your pupil size can offer information about your cognitive load, making it a seemingly accessible marker for tracking mental effort. But using that information outside of the lab is more challenging than it sounds. The pupil also cha

    Neurofrontiers@[email protected]♥ 2↻ 12025-09-16 19:25 UTCView post →
  • Schoolgirl who died after being hit by London taxi named Want to bookmark your favourite articles and stories to read or reference later? Start your Independent Membership today.… #London #UnitedKingdom #UK #GB #England #Headlines #News #Eu

    London@[email protected]♥ 0↻ 02026-09-28 04:39 UTCView post →

What “pupil” means

Wiktionary · Wikipedia

pupil/ˈpjuːpəl/

  • nounA learner under the supervision of a teacher or professor.
Full entry on Wiktionary →

The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina. It appears black because light rays entering the pupil are either absorbed by the tissues inside the eye directly, or absorbed after diffuse reflections within the eye that mostly miss exiting the narrow pupil. The size of the pupil is controlled by the iris, and varies depending on many factors, the most significant being the amount of light in the environment. The term "pupil" was coined by

“Pupil” on Wikipedia (CC BY-SA) →

#pupil across platforms

every network with a public tag surface

Follow #pupil 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/pupil