{
  "$schema": "https://json-structure.org/draft-1/schema",
  "name": "PlaceKittenImageRequestStructure",
  "description": "Structural description of a PlaceKitten image request.",
  "fields": [
    {
      "name": "width",
      "type": "integer",
      "required": true,
      "constraints": { "min": 1, "max": 2000 },
      "description": "Pixels wide."
    },
    {
      "name": "height",
      "type": "integer",
      "required": true,
      "constraints": { "min": 1, "max": 2000 },
      "description": "Pixels tall."
    },
    {
      "name": "grayscale",
      "type": "boolean",
      "required": false,
      "default": false,
      "description": "Routes to the /g/ grayscale path when true."
    }
  ],
  "urlMapping": {
    "color": "/{width}/{height}",
    "grayscale": "/g/{width}/{height}"
  }
}