curl --request GET \
  --url https://cockroachlabs.cloud/api/v1/clusters/{cluster_id}/connection-string \
  --header 'Authorization: Bearer <token>'

{
  "connection_string": "<string>",
  "params": {
    "Database": "<string>",
    "Host": "<string>",
    "Port": "<string>",
    "Username": "<string>"
  }
}

{
  "code": 123,
  "details": [
    {
      "@type": "<string>"
    }
  ],
  "message": "<string>"
}