Example

$ terraspace summary
Summary of resources based on backend storage statefiles
Downloading statefiles to /tmp/terraspace/statefiles/terraform-state-111111111111-us-west-2-dev/us-west-2/dev/
stacks/demo/terraform.tfstate
    random_pet this: sunny-chicken
    aws_s3_bucket this: bucket-sunny-chicken
$

Also, check out terraspace all show.