Ask any URL if it is up.

Hesklo requests it from the outside and tells you what came back: whether it answered, how long it took, and where the request actually landed.

No account, no rate limit games. Press Enter to run it.

The same check, as an API.

Everything this page does is one public GET request. No key, no account. Call it from a script, a health dashboard, or a terminal.

GET https://tools.hesklo.com/check?url=example.com

{
  "status": "up",
  "code": 200,
  "reason": "OK",
  "response_time_ms": 126,
  "url": "https://example.com",
  "final_url": "https://www.example.com/"
}

One parameter. Pass url. A bare host works, the scheme is filled in for you.
Read status first. It is up or down. The code and reason tell you why.
Redirects are followed. final_url is where the request landed, url is what you asked for.
It is a snapshot, not a monitor. Poll it if you like, but Hesklo will do the polling, the confirming and the paging for you.

One check is a snapshot. Hesklo keeps watching.

Run this same check every 60 seconds, then draw exactly who gets paged when it stops answering.

Start free See how it works