Is it possible to get info using API about any alert was triggered?

Hello, I read the documentation Alerting Notification Channels HTTP API | Grafana documentation but didn’t get information I want. Is it possible to execute http request to grafana and get information that one or more alerts already happened. I don’t want to use webhook, just execute get request.
Also didn’t find information about fields in response, for example what field sendReminder means?
Thanks for answer.

Hi, dear @andreidanilenka ,I have the same problem now. Have you found the answer to this question?