Is This Site Down?

Ask your assistant "is X down?" and it runs a live HTTP check from Singapore and Boston.

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What it can do

  • Check Site: Live up/down check of any public website from an independent server (Singapore; Boston for sites that geo-block Singapore). Returns a one-sentence verdict plus status code, latency, resolv
  • List Outages: Lists the monitored sites (634 across 17 categories) that are confirmed down right now: two consecutive failed checks from their home region and no other region seeing them up in the las
  • Site History: Uptime percentage over 24 h and over the requested window (up to 7 days), the list of outages in that window, when the site was last seen down, the current state and user-report counts.

What data it sees

Do you need an account

No: the server works without sign-in

Ask your assistant "is X down?" and it runs a live HTTP check from Singapore and Boston. That way a site blocking one region isn't reported as an outage. It can also list which of 634 popular sites are down right now, show a site's uptime history and recent incidents, and report when a site's TLS certificate expires. No API key and no sign-up. It's the same free public API that downforjustmeoreveryone.com runs on.

Server tool list (5)

Raw names from tools/list. Only developers need these.

check_siteLive up/down check of any public website from an independent server (Singapore; Boston for sites that geo-block Singapore). Returns a one-sentence verdict plus status code, latency, resolved IP, redirect target, the view from the other region when available, and how many users reported problems in the last hour. Results are cached 30 s per domain.
list_outagesLists the monitored sites (634 across 17 categories) that are confirmed down right now: two consecutive failed checks from their home region and no other region seeing them up in the last 15 minutes. Optional category filter.
site_historyUptime percentage over 24 h and over the requested window (up to 7 days), the list of outages in that window, when the site was last seen down, the current state and user-report counts. Only for monitored sites (see list_monitored_sites); use check_site for anything else.
check_certificateReads the HTTPS certificate of a public domain and reports days until expiry, the expiry date and the issuer.
list_monitored_sitesThe 634 sites checked every 5 minutes, grouped in 17 categories. Without arguments returns the category list with counts; filter by category or a text query to get domains (at most 200 per call).
Is This Site Down?: connect to Claude, ChatGPT, Cursor · Connectors.fun