curl --request GET \
  --url https://api.planetscale.com/v1/organizations/{organization}/databases/{database}/branches/{branch}/keyspaces \
  --header 'Authorization: <api-key>'

{
  "current_page": 123,
  "next_page": 123,
  "next_page_url": "<string>",
  "prev_page": 123,
  "prev_page_url": "<string>",
  "data": [
    {
      "id": "<string>",
      "name": "<string>",
      "shards": 123,
      "sharded": true,
      "replicas": 123,
      "extra_replicas": 123,
      "created_at": "<string>",
      "updated_at": "<string>",
      "cluster_name": "<string>",
      "cluster_display_name": "<string>",
      "resizing": true,
      "resize_pending": true,
      "ready": true,
      "metal": true,
      "default": true,
      "imported": true,
      "vector_pool_allocation": 123,
      "replication_durability_constraints": {
        "strategy": "available"
      },
      "vreplication_flags": {
        "optimize_inserts": true,
        "allow_no_blob_binlog_row_image": true,
        "vplayer_batching": true
      }
    }
  ]
}