Mastodon Hashtag Search & Fediverse Monitor API
Pricing
from $5.00 / 1,000 post fetcheds
Mastodon Hashtag Search & Fediverse Monitor API
Search a hashtag across multiple Mastodon instances and get back structured posts with engagement counts — no login, no auth token required. Built for brand monitoring and research across the Fediverse.
Pricing
from $5.00 / 1,000 post fetcheds
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Developer
Muhammad Sohaib Roomi
Maintained by CommunityActor stats
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2
Total users
1
Monthly active users
5 days ago
Last modified
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Search a hashtag across multiple Mastodon instances and get back structured posts with engagement counts — no login, no API token, no anti-bot workarounds. Fediverse content is spread across thousands of independent servers instead of one central platform, so this pools results from a configurable list of instances in one call.
What you can use this for
- Brand & topic monitoring across the Fediverse, where mentions of your product or industry are scattered across many servers instead of one app.
- Research into a niche or growing platform community not well covered by mainstream social listening tools.
- Competitive/market intelligence in spaces (open source, indie tech, journalism) that lean heavily toward Mastodon over corporate platforms.
Input
| Field | Description | Default |
|---|---|---|
hashtag | Hashtag to search, without # | technology |
instances | List of instance domains to query | mastodon.social, mastodon.online, fosstodon.org |
onlyMedia | Restrict to posts with an image/video/audio attachment | false |
maxResultsPerInstance | Max posts to fetch per instance | 100 |
Every field has a working default — hit Start with no changes and you'll get results.
Output
One row per post:
{"id": "112233445566778899","instance": "mastodon.social","url": "https://mastodon.social/@user/112233445566778899","text": "post text with HTML stripped","createdAt": "2026-09-01T12:00:00.000Z","author": { "username": "user", "acct": "user@mastodon.social", "displayName": "..." },"favouritesCount": 4,"reblogsCount": 1,"repliesCount": 0,"tags": ["technology"]}
Pricing
Pay-per-event: $0.005 per post fetched. No subscription, no minimum.