This is an example repository using TFstate.dev.

In the terraform {} block of main.tf, there is an http backend which is configured as-per the instructions on our website.

Also, there is a terraform_remote_state data source, which uses the state output from example.

Access to the terraform_remote_state can be configured using the TF_HTTP_PASSWORD enviornment variable:

export TF_HTTP_PASSWORD="{your-github-token}"
terraform plan
terraform apply