Hashtag.org Hashtag Metrics

Hashtag.org Hashtag Metrics provides live analytics for hashtag usage, related tags, top posts, engagement and posting hours. The free web tool requires no login, and its figures are also available as JSON through the `/api/hashtags/` endpoint. The directory offers browsing across 1,251,230 measured tags. Usage counts come from Mastodon public tags, trends and search APIs; post metrics use the Bluesky public search API. Mastodon counts cover a roughly seven-day window, while Bluesky figures reflect the latest sample of posts. Each measurement includes a named source and fetch time, and values the service cannot measure appear as a dash. Metrics for X, Instagram and TikTok are omitted because their numbers are behind paid APIs. The service also describes an auction with public bids for claiming a hashtag as a #name on the hashtag.org network. It is available on the web and through an API, so readers can browse available metrics or retrieve them in software.

Hashtag.org Hashtag Metrics makes its measured tag data available through both a directory and JSON endpoint. Its platform coverage and measurement windows are important to keep in mind when interpreting figures.

Hashtag Metrics suits people who want to browse hashtag activity or access available measurements through an API. Its coverage is relevant to users seeking Mastodon usage counts and Bluesky post metrics, rather than metrics for X, Instagram or TikTok.