Scalr

A best practice in Scalr is to use the Scalr Terraform provider to manage Scalr. To do this, an API token must be generated and it is recommended to use Service Accounts for the token. This will provide you with an ID and token.

resource "scalr_provider_configuration" "scalr" {
  name       = "scalr"
  account_id = "acc-xxxxxxxxx"
  scalr {
    hostname       = "scalr.host.example.com"
    token          = "my-scalr-token"
  }
}

The above is an example, please see the full provider documentation here.