# Douyin Video Index Trend API

> Returns historical index trend data points for a specified Douyin video over a designated period defined by start and end dates.

Source: https://www.sandbase.ai/apis/douyin/index/item-index
API reference: https://www.sandbase.ai/apis/douyin/index/item-index/docs

## Facts

- Provider: Douyin
- Type: Data API
- Endpoint: `POST https://api.sandbase.ai/v1/api/douyin/index/item-index`
- Price: $0.0015 per call
- Free allowance: 100 calls per organization per UTC day, shared across eligible APIs
- Capabilities: api, douyin
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

`POST https://api.sandbase.ai/v1/api/douyin/index/item-index` with `Authorization: Bearer $SANDBASE_API_KEY` and the parameters as a JSON body.

| Parameter | Type | Required | Allowed values |
| --- | --- | --- | --- |
| `end_date` | string | yes |  |
| `item_id` | string | yes |  |
| `start_date` | string | yes |  |

## FAQ

### How do I use the Douyin Video Index Trend API?

Send a POST request to https://api.sandbase.ai/v1/api/douyin/index/item-index with your SandBase API key in the Authorization header (Bearer) and the parameters as a JSON body. You can also try it in the Playground on this page without writing code.

### How much does the Douyin Video Index Trend API cost?

$0.0015 per call. Every organization gets 100 free calls per UTC day, shared across eligible SandBase APIs including this one; after that each call is billed at this price from your SandBase balance. There is no subscription.

### What parameters does the Douyin Video Index Trend API accept?

Required: end_date (string), item_id (string) and start_date (string). The Parameters table and the Playground on this page list every field.

### What does the Douyin Video Index Trend API return?

A JSON response returned in the same HTTP request (synchronous). The README on this page includes a sample response.

### Do I need a Douyin developer account or API key?

No. Douyin Video Index Trend runs through SandBase, so one SandBase API key covers this endpoint and every other API and model in the catalog. You do not need to apply for Douyin API access separately.

## README

### Douyin Video Index Trend API

Retrieve index trend statistics for a Douyin video by providing `item_id` alongside `start_date` and `end_date`.

#### Use cases

- Track index interest changes for a specific Douyin video over time.
- Evaluate historical popularity metrics across defined date intervals.
- Compare index performance trends across different video items.

#### Request

```bash
curl -X POST "https://api.sandbase.ai/v1/api/douyin/index/item-index" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"end_date": "20260710", "item_id": "7660090930283744575", "start_date": "20260704"}'
```

#### Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `item_id` | string | Yes | Video ID (Douyin aweme id, numeric string) |
| `end_date` | string | Yes | End date YYYYMMDD |
| `start_date` | string | Yes | Start date YYYYMMDD |

#### Example response

Real response for the request above, trimmed to the main fields. User names and long IDs are masked.

```json
{
  "trend": [
    {
      "datetime": "20260704",
      "value": "0"
    }
  ]
}
```

#### Notes

- Set `item_id` as the numeric Douyin aweme ID string.
- Enter `start_date` and `end_date` in YYYYMMDD format.

#### Related APIs

- [Douyin Index Area List](/model/douyin/index/all-area): Returns the complete list of supported geographic areas available for Douyin Index queries.
- [Douyin Index Valid Dates](/model/douyin/index/all-valid-date): Returns the latest valid dates available for each data type in Douyin Index.
- [Douyin Brand Popularity Cycles](/model/douyin/index/brand-cycles): Returns periodic brand popularity and cycle analysis data across platforms for a specified brand name and date range.