I'm currently using https://github.com/agileharbor/telegraf-client to send metrics to Telegraf from .NET and while it works fine, it's unmaintained and obviously not officially supported. It would seem to me that adding Telegraf as a new output target to this package should be rather trivial. The only change to the public API would be the possibility to do .WriteTo.Telegraf("udp://localhost:8084").