API Uptime Checker: A Practical DevOps Monitoring Workflow

Published March 2026 by SiteInformant Team

API Uptime Checker: A Practical DevOps Monitoring Workflow

A one-time endpoint check is excellent for answering "what is happening now?" Production monitoring must answer a different question: "when did the condition change, and who needs to know?"

Check the endpoint before creating a monitor

Use the public SiteInformant checker to confirm the current HTTP response, response time, resolved IP, SSL issuer, expiration date, and TLS protocol. The checker accepts public HTTP and HTTPS targets without custom headers or query strings.

Save the exact endpoint

After the result, choose Start monitoring. SiteInformant carries the checked URL into the application and prefills the Add Site form so it does not need to be typed again.

Define success

For a normal website, the default HTTP success range is usually appropriate. For a health endpoint, optionally require the exact code the service contract specifies.

Registered monitors can also use encrypted request headers for protected endpoints.

Configure alert quality

Use the account settings to choose:

• How long a site must remain down before notification
• How long recovery must remain stable
• When sustained response time should produce an alert
• How many days before SSL expiration to warn

Choose delivery channels

Each monitor can send email or webhook notifications. Slack and Discord webhook formats are supported alongside generic POST destinations. Public status pages and badges can be enabled separately for endpoints intended to be shared.

This workflow keeps setup short while making the definition of "healthy" explicit.

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