App Store Written Reviews (25, US English, by Apple App ID)

{
  "type": "object",
  "required": [
    "app_id",
    "location_code",
    "language_code",
    "depth"
  ],
  "properties": {
    "depth": {
      "enum": [
        25
      ],
      "type": "integer",
      "default": 25,
      "description": "The number of reviews; only 25 is offered."
    },
    "app_id": {
      "type": "string",
      "pattern": "^[1-9][0-9]{0,19}$",
      "description": "The app's numeric Apple ID: the digits after `id` in an App Store link to the app."
    },
    "language_code": {
      "enum": [
        "en"
      ],
      "type": "string",
      "description": "The storefront language; only \"en\" (English) is offered."
    },
    "location_code": {
      "enum": [
        2840
      ],
      "type": "integer",
      "description": "The storefront country; only 2840 (the United States) is offered."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "results": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "items": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "id": {
                  "type": "string",
                  "description": "The review's ID."
                },
                "title": {
                  "type": "string",
                  "description": "The review's headline."
                },
                "version": {
                  "type": "string",
                  "description": "The app version the review was written against."
                },
                "timestamp": {
                  "type": "string",
                  "description": "The day the review was posted, as `YYYY-MM-DD 00:00:00 +00:00` (day precision only)."
                },
                "review_text": {
                  "type": "string",
                  "description": "The review text."
                }
              }
            },
            "description": "The written reviews, in the order the store returned them."
          },
          "title": {
            "type": "string",
            "description": "The app's name on its store page."
          },
          "app_id": {
            "type": "string",
            "description": "The app's Apple ID."
          },
          "rating": {
            "type": "object",
            "properties": {
              "value": {
                "type": "number",
                "description": "The app's overall star rating, out of 5."
              },
              "votes_count": {
                "type": "number",
                "description": "How many ratings the app has."
              }
            }
          },
          "items_count": {
            "type": "number",
            "description": "How many reviews this call returned."
          }
        }
      }
    }
  },
  "description": "The lookup result: one entry for the app."
}