Upside down alert / alert on content found

[traxeon]

Describe the feature request

Alert when a condition is met vs. not met. example: firmware available on a web management interface.

Why do you personally want this feature to be implemented?

Many devices will put an update status on a management web page when updates are available. These devices check the internet and when you visit their management web ui, updated content will be available. Uptime Kuma calls this "upside down" alerting.

How long have you been using this project?

1 day

Additional information

In analyzing a replacement for other web monitoring tools gatus is of interest. I have a full kubernetes deployment but am missing this feature to replace some other tools that we use.

[JELTAD]

In the config for an endpoint, you can just set it like this:

conditions:
      - "[BODY] != pat(*update available*)"