Nice coincidence I was looking for such a solution last week. We use Cloudflare DNS and their traffic feature. It monitors if our (redundant) endpoints are up a

Nice coincidence I was looking for such a solution last week. We use Cloudflare DNS and their traffic feature. It monitors if our (redundant) endpoints are up and if one is down removes that DNS entry and alerts us. DNS is free, the traffic feature isn't. I was hoping DNSimple, a smaller SaaS provider, would offer this, but they don't. And we thought we build a script ourselves but it's another piece of our infrastructure that could fail so better to outsource that. Cloudflare works for us, I think their traffic feature, for our usecase, is too expensive long-term. If I understand correct your solution would be independent and update for example Cloudflare DNS via their API.