curl --request GET \
  --url 'https://api.511.org/transit/stopplaces?api_key='

{
  "Siri": {
    "ServiceDelivery": {
      "DataObjectDelivery": {
        "dataObjects": {
          "SiteFrame": {
            "stopPlaces": {
              "StopPlace": [
                {
                  "id": "18079",
                  "Name": "Mission St & 16th St"
                }
              ]
            }
          }
        }
      }
    }
  }
}