# Xiaohongshu topic detail API

> A topic (hashtag) page by its ID: name, description, views and the number of people its page says are discussing it, with its link.

Canonical page: https://okdata.online/apis/xiaohongshu/topics/get/

- **Endpoint**: `GET /v1/xiaohongshu/topics/get`
- **ID**: `xiaohongshu.topics.get`
- **Price**: $0.02 per call
- **Returns**: one Topic object (`data.item`)
- **Status**: preview
- **Good for**: Trend research

## Price

One call costs $0.02 and returns one topic. 1,000 lookups cost $20.00. Failed calls are not charged.

## Parameters

| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| `id` | string | yes |  | The topic page ID (24 hex characters): the id in a topic link, e.g. a hashtag link in a note. (e.g. `5ee1c0a110694c00010b4ae9`) |
| `view` | string: compact / standard / full | no | `standard` | How much of each object comes back. full adds platform-specific fields under ext. |
| `fields` | string[] | no |  | Fields to keep, by path (author.name), to save tokens. In a query string: comma-separated. |

cursor, view and fields work as described in [Requests](https://okdata.online/docs/requests/).

## Returned fields

Each item is a [Topic](https://okdata.online/docs/objects/topic/).

| Field | Type | Description |
|---|---|---|
| `id` | string | ID; pass it as is to the endpoints that take one. |
| `name` | string | Name of the topic. |
| `url` | string \| null | Link to the topic page. |
| `description` | string \| null | What the topic page says it is about; null when it says nothing. |
| `metrics` | TopicMetrics | Counts at fetch time. |
| `ext` | object | Platform-specific extras. Only returned with view=full. |

## Request examples

### cURL

```bash
curl -G "https://api.okdata.online/v1/xiaohongshu/topics/get" \
  -H "Authorization: Bearer $OKDATA_API_KEY" \
  --data-urlencode 'id=5ee1c0a110694c00010b4ae9'
```

### Python

```python
import os
import requests

resp = requests.get(
    "https://api.okdata.online/v1/xiaohongshu/topics/get",
    headers={"Authorization": f"Bearer {os.environ['OKDATA_API_KEY']}"},
    params={"id": "5ee1c0a110694c00010b4ae9"},
    timeout=60,
)
body = resp.json()
if body["code"] != "ok":
    raise RuntimeError(f"{body['code']}: {body['message']} (charged: {body['charged']})")

row = body["data"]["item"]
print(row)
print("cost: $" + body["meta"]["billing"]["amount"])
```

### TypeScript

```ts
const url = new URL('https://api.okdata.online/v1/xiaohongshu/topics/get');
url.searchParams.set('id', "5ee1c0a110694c00010b4ae9");

const res = await fetch(url, {
  headers: {
    Authorization: `Bearer ${process.env.OKDATA_API_KEY}`,
  },
});
const body = await res.json();
if (body.code !== 'ok') throw new Error(`${body.code}: ${body.message}`);

const row = body.data.item;
console.log(row);
console.log('cost: $' + body.meta.billing.amount);
```

### MCP

```json
{
  "name": "call",
  "arguments": {
    "capability": "xiaohongshu.topics.get",
    "id": "5ee1c0a110694c00010b4ae9"
  }
}
```

Or ask an agent that has the MCP server connected:

> Use Xiaohongshu topic detail and sum up what comes back.

## Response example

```json
{
  "code": "ok",
  "request_id": "0f6c2a8e-4b1d-4e0a-9a51-3c7d2b9e1f20",
  "data": {
    "item": {
      "id": null,
      "name": null,
      "url": null,
      "description": null,
      "metrics": {
        "views": null,
        "posts": null
      }
    }
  },
  "warnings": [],
  "meta": {
    "capability": "xiaohongshu.topics.get",
    "billing": {
      "amount": "0.02",
      "currency": "USD",
      "balance_after": "9.98"
    },
    "unavailable": {},
    "cached": false,
    "replayed": false,
    "fetched_at": "2026-11-11T08:00:00Z"
  }
}
```

## Errors

Errors share one shape: code, request_id, message and message_zh (a fixed sentence per code), charged, retry, retry_after_seconds, param and docs_url, with the specifics in problems. They are not charged; only settlement_unknown is unknown until looked up. The full table: https://okdata.online/docs/errors/

## Questions

### How much does the Xiaohongshu topic detail API cost?

One call costs $0.02 and returns one topic. 1,000 lookups cost $20.00. Failed calls are not charged.

### Do I need a Xiaohongshu (RedNote) account, cookies or a QR login?

No. You send only your okdata API key. The data is public data from Xiaohongshu (RedNote); nothing is fetched with your own Xiaohongshu (RedNote) account.

### Am I charged when a call fails?

No. Every error response says charged: false, except a timeout, which says charged: null until the outcome is known. Resend with the same Idempotency-Key and you are never charged twice.

### What if Xiaohongshu (RedNote) does not show a field?

The field is null, and meta.unavailable names it with the reason: platform (the platform never shows it) or capability (we cannot fetch it yet).

## More Xiaohongshu (RedNote) endpoints

- [Xiaohongshu note search](https://okdata.online/apis/xiaohongshu/notes/search/): $0.02 per call · about 20 notes per page
- [Xiaohongshu note detail](https://okdata.online/apis/xiaohongshu/notes/get/): $0.02 per call
- [Xiaohongshu note comments](https://okdata.online/apis/xiaohongshu/notes/comments/list/): $0.02 per call · about 10 comments per page
- [Xiaohongshu account profile](https://okdata.online/apis/xiaohongshu/users/get/): $0.02 per call
- [Xiaohongshu account notes](https://okdata.online/apis/xiaohongshu/users/notes/list/): $0.02 per call · about 20 notes per page
- [Xiaohongshu hot topics](https://okdata.online/apis/xiaohongshu/trends/list/): $0.02 per call · about 20 board entries per page
- [Xiaohongshu PGY creator search](https://okdata.online/apis/xiaohongshu/pgy/creators/search/): $0.04 per call · about 20 creators per page
- [Xiaohongshu PGY creator detail](https://okdata.online/apis/xiaohongshu/pgy/creators/get/): $0.04 per call
- [Xiaohongshu shop product search](https://okdata.online/apis/xiaohongshu/shop/products/search/): $0.02 per call · about 20 products per page
- [Xiaohongshu shop product reviews](https://okdata.online/apis/xiaohongshu/shop/products/reviews/list/): $0.02 per call · about 12 reviews per page
- [Xiaohongshu image search](https://okdata.online/apis/xiaohongshu/images/search/): $0.02 per call · about 20 posts per page
- [Xiaohongshu comment replies](https://okdata.online/apis/xiaohongshu/comments/replies/list/): $0.02 per call · about 5 comments per page
- [Xiaohongshu topic notes](https://okdata.online/apis/xiaohongshu/topics/notes/list/): $0.02 per call · about 10 notes per page
- [Xiaohongshu account search](https://okdata.online/apis/xiaohongshu/users/search/): $0.02 per call · about 20 accounts per page
- [Xiaohongshu shop product detail](https://okdata.online/apis/xiaohongshu/shop/products/get/): $0.02 per call
- [Xiaohongshu search suggestions](https://okdata.online/apis/xiaohongshu/keywords/related/): $0.02 per call · about 10 results per page
- [Xiaohongshu video note with its video](https://okdata.online/apis/xiaohongshu/videos/get/): $0.02 per call
- [Xiaohongshu PGY keyword search index](https://okdata.online/apis/xiaohongshu/pgy/keywords/history/): $0.04 per call
- [Xiaohongshu PGY related keywords](https://okdata.online/apis/xiaohongshu/pgy/keywords/related/): $0.04 per call · about 98 results per page
- [Xiaohongshu PGY creator audience](https://okdata.online/apis/xiaohongshu/pgy/creators/audience/get/): $0.04 per call
- [Xiaohongshu PGY creator note metrics](https://okdata.online/apis/xiaohongshu/pgy/creators/metrics/): $0.04 per call
- [Xiaohongshu PGY creator notes](https://okdata.online/apis/xiaohongshu/pgy/creators/notes/list/): $0.04 per call · about 8 notes per page
- [Xiaohongshu PGY creator follower history](https://okdata.online/apis/xiaohongshu/pgy/creators/followers/history/): $0.04 per call
- [Xiaohongshu PGY similar creators](https://okdata.online/apis/xiaohongshu/pgy/creators/related/): $0.04 per call · about 4 creators per page
- [Xiaohongshu PGY trending notes](https://okdata.online/apis/xiaohongshu/pgy/notes/trending/): $0.04 per call · about 34 notes per page
- [Xiaohongshu PGY creator costs and summary](https://okdata.online/apis/xiaohongshu/pgy/creators/costs/metrics/): $0.04 per call
- [Xiaohongshu PGY creator follower quality](https://okdata.online/apis/xiaohongshu/pgy/creators/followers/metrics/): $0.04 per call
- [Xiaohongshu PGY creator core figures history](https://okdata.online/apis/xiaohongshu/pgy/creators/costs/history/): $0.04 per call
- [Xiaohongshu PGY note figures](https://okdata.online/apis/xiaohongshu/pgy/notes/get/): $0.04 per call

## At a glance

- **Short name**: Xiaohongshu topic detail
- **Also called**: rednote hashtag views, xhs topic page
- **Category**: [Social media](https://okdata.online/categories/social/)
- **Status**: preview. It may still change; any change is announced beforehand.
- **Price**: $0.02 per call · failed calls are free
- **Returns**: One Topic, as data.item
- **If a call fails**: Not charged. When a data source fails, the next one is tried; errors and timeouts cost nothing.

## When it is charged

- Data comes back: $0.02 per call
- Bad parameters, errors, timeouts: Free

| When | Charge |
|---|---|
| Most one call costs | $0.02 |
| An empty answer | Free |
| Not found (the platform has no such item) | Free |
| Bad parameters, errors, timeouts | Free |
| A retry with the same Idempotency-Key within 24 hours | Charged once |

A failed call is free; an empty answer is free; not found is free.

Prices from price book 1b273c48fea9634e. [Every price on this platform](https://okdata.online/pricing/xiaohongshu/)

- New accounts get $0.10 of credit, no card needed: 5 calls to this endpoint.
- 1,000 lookups cost $20.00.

## Fields by view

The view column is the smallest `view` a field comes back in: `compact` returns only compact fields, `standard` adds the standard ones, `full` returns everything. The default is `standard`.

- `compact`: `id`, `name`, `url`, `description`, `metrics`
- `full`: `ext`

## Common errors on this endpoint

| HTTP | Code | Meaning | Charged | Retry |
|---|---|---|---|---|
| 400 | `invalid_params` | A parameter is missing, has the wrong type or value, or the method is wrong. problems lists each one; param names the first. | no | after a fix |
| 401 | `unauthorized` | The key is missing, malformed, revoked, disabled or expired (reason says which when known). | no | no |
| 402 | `insufficient_balance` | The balance (available) cannot cover the most this call could cost (required). | no | after a fix |
| 404 | `not_found` | The post, account or page does not exist or is not public. Endpoints whose charge_when_not_found is above 0 charge this answer (the source billed us for it): the body then says charged: true and amount. | no | no |
| 429 | `rate_limited` | The account sent too many requests this minute (reason: rate) or has too many calls running (reason: concurrency). | no | yes |
| 500 | `settlement_unknown` | The data came back, but the charge could not be confirmed. | unknown until looked up | with the same Idempotency-Key |
| 502 | `upstream_failed` | Every data source for this endpoint failed on this request. | no | yes |
| 503 | `capability_paused` | This endpoint is paused right now; nothing ran. | no | yes |
| 504 | `timeout` | The data did not come back in time. The hold was released, so nothing was charged. | no | yes |

[All error codes](https://okdata.online/docs/errors/)

## Use it in your AI

> Read https://okdata.online/apis/xiaohongshu/topics/get.md, then call this endpoint for me through okdata; my key is in the OKDATA_API_KEY environment variable. Use Xiaohongshu topic detail and sum up what comes back.

## Xiaohongshu (RedNote) endpoints by group

- [Xiaohongshu PGY API](https://okdata.online/apis/xiaohongshu/pgy/): Xiaohongshu PGY creator search $0.04, Xiaohongshu PGY creator detail $0.04, Xiaohongshu PGY keyword search index $0.04, Xiaohongshu PGY related keywords $0.04, Xiaohongshu PGY creator audience $0.04, Xiaohongshu PGY creator note metrics $0.04, Xiaohongshu PGY creator notes $0.04, Xiaohongshu PGY creator follower history $0.04, Xiaohongshu PGY similar creators $0.04, Xiaohongshu PGY trending notes $0.04, Xiaohongshu PGY creator costs and summary $0.04, Xiaohongshu PGY creator follower quality $0.04, Xiaohongshu PGY creator core figures history $0.04, Xiaohongshu PGY note figures $0.04
- [Xiaohongshu Shop API](https://okdata.online/apis/xiaohongshu/shop/): Xiaohongshu shop product search $0.02, Xiaohongshu shop product reviews $0.02, Xiaohongshu shop product detail $0.02