social-mastodon
Fediverse Observer
A directory and uptime monitor covering thousands of Fediverse/Mastodon servers, with a GraphQL endpoint behind it. Use the website to discover which instances exist and which are currently alive. It holds no posts itself — it is the natural first stop before digging into a specific Mastodon server.
Search this archive
No programmatic check — opens the archive’s own search.
Why it’s useful & how it works
Use to enumerate live instances before fanning out per-instance Mastodon calls. Reachable via proxy (direct errored). GraphQL needs POST (not GET-probeable).
What’s inside
Thousands of nodes.
API access
GraphQL https://api.fediverse.observer/ (POST)
Access
Freely reachable — no key, login, or captcha.