# Douyin Relation Analysis Valid Dates API

> Returns the valid date range available for relation analysis on Douyin. Use this endpoint to discover supported timeframes before requesting relationship metrics.

Source: https://www.sandbase.ai/apis/douyin/index/valid-date-for-relation
API reference: https://www.sandbase.ai/apis/douyin/index/valid-date-for-relation/docs

## Facts

- Provider: Douyin
- Type: Data API
- Endpoint: `POST https://api.sandbase.ai/v1/api/douyin/index/valid-date-for-relation`
- 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/valid-date-for-relation` with `Authorization: Bearer $SANDBASE_API_KEY` and the parameters as a JSON body.

## FAQ

### How do I use the Douyin Relation Analysis Valid Dates API?

Send a POST request to https://api.sandbase.ai/v1/api/douyin/index/valid-date-for-relation 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 Relation Analysis Valid Dates 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 Relation Analysis Valid Dates API accept?

Douyin Relation Analysis Valid Dates takes no input parameters; send an empty JSON body.

### What does the Douyin Relation Analysis Valid Dates API return?

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

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

No. Douyin Relation Analysis Valid Dates 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 Relation Analysis Valid Dates API

This endpoint returns the available date range for Douyin relation analysis. Call it to verify supported date boundaries before querying relation index metrics.

#### Use cases

- Check supported date windows before requesting relation metrics.
- Validate user-selected date ranges in relation analytics dashboards.
- Keep automated data pipelines aligned with platform data availability boundaries.

#### Request

```bash
curl -X POST "https://api.sandbase.ai/v1/api/douyin/index/valid-date-for-relation" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'
```

#### 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.