Currently when you create a check or group you get back in the response a 201 Created and Your group is successfully created with ID. It would be nice for the API to return the JSON string of the POST calls, such as, when creating a check, the response would include the check id, name of the check, settings, target url, etc. in a json format.
Right now the Check ID is sufficient in the response. If you want the full information about the check, building out that API route would make more sense for us.