#cap21
Live, measured metrics for the hashtag #cap21 from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #cap21
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.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-09-29 05:16 UTCNo measured public usage for #cap21 in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-09-29 05:16 UTCNo related tags with measured usage found for #cap21.
Live pulse
measured · Mastodon tag timeline · fetched 2026-09-29 05:16 UTCNo recent public posts found for #cap21 on Mastodon. Nothing measured, so nothing shown.
What “cap21” means
Wiktionary · Wikipediacap/kæp/
- nounA close-fitting hat, either brimless or peaked.
- verbTo cover or seal with a cap.
A cap is a flat headgear. They made their first appearance as early as 3200 BC. The origin of the word "cap" comes from the Old French word "chapeau" which means "head covering". Over time, the word has evolved and changed its meaning, but it still retains its association with headwear. They are popular in casual and informal settings, and are seen in sports and fashion. They are typically designed for warmth, and often incorporate a visor to block sunlight from the eyes. They come in many shape
“Cap” on Wikipedia (CC BY-SA) →#cap21 across platforms
every network with a public tag surfaceFollow #cap21 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/cap21