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.

Hi there,
I’ve tried to read the link above but I was not able to reach it out since I’m automatically redirected to this URI https://docs.checkmk.com/master/de/rest_api.html

Could you please post out the resolution again?


the link to the legacy option seems to be gone.
When you are using Checkmk 2.0, there is a great in-product link at Help → APIs → REST API documentation, where you can find all the information including samples.
I hope this helps …

Hi @rons4 thanks, that was very helpful!

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