Checkmk

Retrieve the full list of monitored hosts in your Checkmk site, including their states, hostnames, and folder paths.

Fetch complete attributes, tags, labels, and folder for a single host by its hostname.

Register a new host in Checkmk under a specified folder with the desired tags, labels, and agent configuration.

Modify an existing host's attributes, tags, labels, or folder assignment without removing and re-creating it.

Permanently remove a host from Checkmk, stopping all associated checks and clearing its history.

Apply all pending configuration changes across the Checkmk site so new hosts, updated rules, and modified services go live immediately.

Retrieve all services monitored on a specific host, including their current state, output, and performance data.

Retrieve the current state, plugin output, and performance metrics for a single named service on a host.

Acknowledge a host or service problem in Checkmk to suppress repeat notifications while the issue is being investigated.

Create a scheduled downtime window for a host or service so Checkmk suppresses notifications and excludes the period from availability calculations.

Trigger an automated service discovery scan on a host to find new or changed services and update the monitoring configuration.

Retrieve all host groups defined in the Checkmk site, including their member counts and aliases.

Register multiple hosts in a single API call, reducing round-trips when onboarding large server fleets or newly discovered infrastructure.

Retrieve historical time-series performance data for a specific metric on a host or service over a defined time range.

Retrieve the notification log for the Checkmk site, including alert recipients, timestamps, and delivery status for host and service events.

Modify an existing notification rule's conditions, contact groups, or delivery method to keep alert routing aligned with team changes.

Fires when Checkmk confirms a host has transitioned to DOWN state after consecutive failed checks.

Fires when a previously DOWN or UNREACHABLE host successfully responds to checks and returns to UP state.

Fires when a monitored service transitions to CRITICAL state, indicating a serious problem that requires immediate attention.

Fires when a service that was in CRITICAL or WARNING state successfully returns to OK, signalling the problem has been resolved.

Fires when a service transitions to WARNING state, indicating a degraded condition that should be addressed before it becomes critical.

Fires when a scheduled downtime window begins for a host or service, signalling that notifications are now suppressed.

Fires when a scheduled downtime window expires, restoring normal notification and availability tracking for the host or service.

Fires when Checkmk's discovery mechanism detects a previously unknown host during a network scan or agent check-in.