curl --request GET \
  --url https://api.gcore.com/cloud/v1/faas/flavors/{project_id}/{region_id} \
  --header 'Authorization: <api-key>'

{
  "count": 1,
  "results": [
    {
      "cpu": 128,
      "name": "128m-128MB",
      "ram": 128
    }
  ]
}