Grafana Cloud AlertManager notification channel

[zfrhv2010]

Maybe you can login to alermanager by using token?
But seems like grafana supports only basic auth:

Providing Authentication in header in Webhook POST request

welcome to the forum, @santrupta I don’t there is a way. It might be worth filing a feature request for one. I think the alerting folks would need to replace the current component in the configuration UI with one that allows the addition of custom headers.