# Douyin Author Daily Fan Trend API

> Returns daily follower trend data for a specified Douyin creator. Supports filtering by date range, author type, and platform source.

Source: https://www.sandbase.ai/apis/douyin/xingtu-v2/author-daily-fans
API reference: https://www.sandbase.ai/apis/douyin/xingtu-v2/author-daily-fans/docs

## Facts

- Provider: Douyin
- Type: Data API
- Endpoint: `POST https://api.sandbase.ai/v1/api/douyin/xingtu-v2/author-daily-fans`
- Price: $0.003 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/xingtu-v2/author-daily-fans` with `Authorization: Bearer $SANDBASE_API_KEY` and the parameters as a JSON body.

| Parameter | Type | Required | Allowed values |
| --- | --- | --- | --- |
| `author_id` | string | yes |  |
| `author_type` | any | no |  |
| `end_date` | any | no |  |
| `platform_source` | integer | no |  |
| `start_date` | any | no |  |

## FAQ

### How do I use the Douyin Author Daily Fan Trend API?

Send a POST request to https://api.sandbase.ai/v1/api/douyin/xingtu-v2/author-daily-fans 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 Author Daily Fan Trend API cost?

$0.003 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 Author Daily Fan Trend API accept?

Required: author_id (string). Optional: author_type (any), end_date (any), platform_source (integer) and start_date (any). The Parameters table and the Playground on this page list every field.

### What does the Douyin Author Daily Fan Trend API return?

A JSON response returned in the same HTTP request (synchronous).

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

No. Douyin Author Daily Fan 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 Author Daily Fan Trend API

Retrieve daily follower trend metrics for a creator using `author_id`. Filter the historical records by specifying `start_date` and `end_date`.

#### Use cases

- Track daily follower growth and fluctuations for target creators.
- Analyze audience trend patterns over custom date intervals.
- Evaluate creator audience performance across different platform sources.

#### Request

```bash
curl -X POST "https://api.sandbase.ai/v1/api/douyin/xingtu-v2/author-daily-fans" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"author_id": "7146074596666507300"}'
```

#### Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `author_id` | string | Yes | Creator ID |
| `end_date` | string | No | End date, format YYYYMMDD, optional |
| `start_date` | string | No | Start date, format YYYYMMDD, optional |
| `author_type` | string | No | Author type, optional |
| `platform_source` | integer | No | Platform source, default 1 |

#### Notes

- Provide `start_date` and `end_date` in YYYYMMDD format.
- `platform_source` defaults to 1 if not specified.

#### Related APIs

- [Douyin Xingtu Author Audience Distribution](/model/douyin/xingtu-v2/author-audience-distribution): Returns audience profile distribution metrics for a specified Xingtu creator based on creator ID and link type, with selectable platform source and channel opt…
- [Douyin Xingtu Author Base Info](/model/douyin/xingtu-v2/author-base-info): Returns basic creator profile data from Douyin Xingtu by author identifier, with options to include recommendation details and linkage information.
- [Douyin Xingtu Author Business Card Info](/model/douyin/xingtu-v2/author-business-card-info): Returns business card details for a Douyin Xingtu creator based on the specified author ID.