Douyin Video Index Trend (by Video ID & Date Window)

{
  "type": "object",
  "required": [
    "end_date",
    "item_id",
    "start_date"
  ],
  "properties": {
    "item_id": {
      "type": "string",
      "description": "Video ID (Douyin aweme id, numeric). Example: 7660090930283744575"
    },
    "end_date": {
      "type": "string",
      "description": "End date YYYYMMDD"
    },
    "start_date": {
      "type": "string",
      "description": "Start date YYYYMMDD"
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "avg": {
      "type": "string",
      "description": "The average index value across the requested date window, as a numeric string (e.g. \"152\" on a live window, \"0\" on a pre-publication one)."
    },
    "trend": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "value": {
            "type": "string",
            "description": "The video's index/activity score for that date, as a numeric string (e.g. \"2008\", \"0\"). Zero on dates outside the video's active window."
          },
          "datetime": {
            "type": "string",
            "description": "The date, YYYYMMDD."
          }
        },
        "additionalProperties": true
      },
      "description": "One entry per date in the requested window, inclusive of start and end. Length equals the number of calendar days in the window (62 entries for a 20260701-20260831 call, 59 for a 20260101-20260228 call)."
    }
  },
  "description": "The video's index trend record, as returned at routing.responseResultPath ($.output). Both observed fixtures return the same shape: an `avg` period average and a `trend` array with one entry per date in the requested window.",
  "additionalProperties": true
}