#400badrequest

Live, measured metrics for the hashtag #400badrequest 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 #400badrequest

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 · 13-character #name
Claim #400badrequest — $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
25
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 25
0.2
Avg reactions / post
Mastodon · last 25
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mastodon.social (Mastodon public tags API) · fetched 2026-09-30 00:50 UTC
0
09-24
0
09-25
0
09-26
0
09-27
0
09-28
0
09-29
0
09-30

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.social (Mastodon public search API) · fetched 2026-09-30 00:50 UTC
#400BadRequests
0 uses · 0 accounts / 7d

Live pulse

measured · mastodon.social (Mastodon tag timeline) · fetched 2026-09-30 00:50 UTC

Everything below is measured over the latest 25 public posts (spanning ~27225 hours).

Posting hours (UTC) — busiest: 02:00

00:0012:0023:00

Languages: English (23) · German (1) · Spanish (1)

Avg boosts / post: 0.1

Top of the latest posts

  • 🍝🤦‍♂️ So, you tried to crack the gluten-free pasta mystery with #neutron #scattering and ended up with a 400 Bad Request? Maybe next time, consult a #chef instead of a physicist. 🚫👨‍🔬 https://phys.org/news/2025-09-science-spaghetti-neu

    N-gated Hacker News@ngate♥ 1↻ 02026-05-23 02:49 UTCView post →

  • 🚨 Oh no! It seems like the groundbreaking revelation about #anxiety and #choline has been thwarted by the formidable "400 Bad Request" monster! 🙄 Guess we'll never know if a choline #smoothie could cure our 'page not found' anxiety. 🥤 ht

    N-gated Hacker News@ngate♥ 1↻ 12025-11-11 15:15 UTCView post →

  • Mein 365/24/7 Lieblings-T-Shirt 😎 #badrequest #400badrequest #error #fehler #shirts #tshirt #favourite #lieblingsshirt

    teufelswerk@[email protected]♥ 1↻ 12025-09-18 16:49 UTCView post →

#400badrequest across platforms

every network with a public tag surface

Follow #400badrequest 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/400badrequest