> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stackone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Checkmk Changelog

> Release history for the Checkmk connector. Each version lists what changed and which actions were affected.

<Card title="Checkmk connector" icon="arrow-left" href="/connectors/checkmk" horizontal>
  Back to the connector overview, authentication methods, and actions.
</Card>

<Update label="v1.2.0" description="17 Sept 2026">
  `data-sync`

  Added DataSync support to 11 list actions (hosts, folders, users, groups, downtimes, rulesets, notification rules, and monitored hosts/services) so their collections can be periodically synced.

  <AccordionGroup>
    <Accordion title="Changed · 11 actions updated">
      `checkmk_list_all_services`, `checkmk_list_contact_groups`, `checkmk_list_downtimes`, `checkmk_list_folders`, `checkmk_list_host_groups`, `checkmk_list_hosts`, `checkmk_list_monitored_hosts`, `checkmk_list_notification_rules`, `checkmk_list_rulesets`, `checkmk_list_service_groups`, `checkmk_list_users`
    </Accordion>
  </AccordionGroup>
</Update>

<Update label="v1.1.1" description="3 Aug 2026">
  `description-fix`

  Improved rule action guidance — documented the host\_name condition shape, clarified that numeric rule thresholds must be integers, and noted that rule IDs for moving a rule come from listing rules first.

  <AccordionGroup>
    <Accordion title="Changed · 3 actions updated">
      `checkmk_create_rule`, `checkmk_move_rule`, `checkmk_update_rule`
    </Accordion>
  </AccordionGroup>
</Update>

<Update label="v1.1.0" description="29 Jul 2026">
  `bug-fix` `description-fix`

  Fixed comment and downtime by-query 400s (target fields now mutually exclusive per type), removed the crash-prone refresh/tabula\_rasa discovery modes, and constrained the notification-rule plugin option to a validated enum.
</Update>