List S3 buckets in an account with Terraform

list_bucket.sh

#!/bin/bash

# List the S3 buckets in an account
aws s3api list-buckets | jq '[.Buckets[]] | map({ (.Name): .Name }) | add'

main.tf

data "external" "buckets" {
  program = ["./list-buckets.sh"]
}

output "json" {
  # List of bucket names
  value = values(data.external.buckets.result)
}