API for Acknowledgement or Annotations

Hi there, I wonder if there is an API for acknowledging or annotating a problem.

I found this link: https://checkmk.com/cms_web_api_references.html#edit_host
However, I cannot find a command for acknowledgement or annotation.

The background is that we would like to add two-way communication to our alerting package SIGNL4: https://exchange.checkmk.com/p/signl4

Thanks a lot in advance.


we did it with this old guide:
It should still work with the actual versions of CheckMK.


Thanks a lot, I will try this out.