API Status Checker

Check if an endpoint is alive and see its response time

Check if an API endpoint is alive. Paste a URL and get the HTTP status code and response time in milliseconds. The request does not originate from your browser. The address is sent to our proxy server, which makes the call to bypass CORS blocking. The server sends a GET request, follows redirects, and waits up to 10 seconds before marking the address as unresponsive. Besides the status, the content type and server name are displayed when available, and the last 10 checks remain in a list until you close the page. Internal addresses like localhost or 192.168.x are blocked.

Frequently asked questions

Why not check directly from the browser?

Browsers block requests to domains that have not authorized them (CORS). Therefore, the address you entered is sent to our proxy server, which executes the request and returns only the status, response time, and a few headers.

Can I check an API that requires a key or token?

No. There is no field for headers or a request body, and the check is sent without credentials. A protected endpoint will usually return a 401 or 403, which is also a sign that the server is alive.

Why is the response time different from what I see locally?

The time is measured from our server, not your computer, and it includes any redirects along the way. A different location on the network yields a different time.

Can I check localhost or a server on my internal network?

No. The server blocks addresses like localhost, 127.0.0.1, 10.x, 192.168.x, and .local domains, because the request comes from the internet and has no access to your network.

What is the difference between unresponsive and a network error?

Unresponsive means 10 seconds passed without a reply. A network error means the connection failed completely, for example due to a non-existent domain or an invalid SSL certificate.

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