#onto
Live, measured metrics for the hashtag #onto from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #onto
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 22:44 UTCNo measured public usage for #onto 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 22:44 UTCNo related tags with measured usage found for #onto.
Live pulse
measured · Mastodon tag timeline · fetched 2026-09-29 22:44 UTCNo recent public posts found for #onto on Mastodon. Nothing measured, so nothing shown.
What “onto” means
Wiktionary · Wikipediaonto/ˈɒn.tuː/
- adjective(of a function) Assuming each of the values in its codomain; having its range equal to its codomain.
- prepositionUpon; on top of.
In mathematics, a surjective function (also known as surjection, or onto function ) is a function f such that, for every element y of the function's codomain, there exists at least one element x in the function's domain such that f(x) = y. In other words, for a function f : X → Y, the codomain Y is the image of the function's domain X. It is not required that x be unique; the function f may map one or more elements of X to the same element of Y.
“Surjective function” on Wikipedia (CC BY-SA) →#onto across platforms
every network with a public tag surfaceFollow #onto 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/onto