For AI

Xiaohongshu (RedNote)Social mediaXiaohongshu PGY API

Xiaohongshu PGY related keywords API

What people search on Xiaohongshu before and after a keyword, up to about 100 words in one answer, each with its place by relevance, its search index, the notes about it and their reads. For widening a seed keyword.

GEThttps://api.okdata.online/v1/xiaohongshu/pgy/keywords/related

Also calledrednote related searchesxhs keyword expansion

Price
$0.04
per call · failed calls are free
Returns
A list of KeywordRelated
the whole list in one answer
If a call fails
Not charged
When a data source fails, the next one is tried; errors and timeouts cost nothing.
Status
preview
It may still change; any change is announced beforehand.

Parameters

NameTypeDescription
keywordrequiredstringOne keyword. e.g. 面膜
viewstringcompactstandardfullHow much of each object comes back. full adds platform-specific fields under ext. default standard
fieldsstring[]Fields to keep, by path (author.name), to save tokens. In a query string: comma-separated.

cursor, view and fields work the same on every endpoint: how requests work.

Request

cURL

curl -G "https://api.okdata.online/v1/xiaohongshu/pgy/keywords/related" \
  -H "Authorization: Bearer $OKDATA_API_KEY" \
  --data-urlencode 'keyword=面膜'

Python

import os
import requests

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

for row in body["data"]["items"]:
    print(row)
print("cost: $" + body["meta"]["billing"]["amount"])

TypeScript

const url = new URL('https://api.okdata.online/v1/xiaohongshu/pgy/keywords/related');
url.searchParams.set('keyword', "面膜");

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}`);

for (const row of body.data.items) {
  console.log(row);
}
console.log('cost: $' + body.meta.billing.amount);

MCPtools/call

{
  "name": "call",
  "arguments": {
    "capability": "xiaohongshu.pgy.keywords.related",
    "keyword": "面膜"
  }
}

Response

200 · application/jsonmeta.billing.amount = 0.04
{
  "code": "ok",
  "request_id": "0f6c2a8e-4b1d-4e0a-9a51-3c7d2b9e1f20",
  "data": {
    "items": [
      {
        "keyword": null,
        "related_to": null,
        "relation": null,
        "rank": null,
        "relevance": null,
        "search_index": null,
        "composite_index": null
      }
    ]
  },
  "page": {
    "next_cursor": "eyJvIjoyMH0",
    "has_more": true
  },
  "warnings": [],
  "meta": {
    "capability": "xiaohongshu.pgy.keywords.related",
    "billing": {
      "amount": "0.04",
      "currency": "USD",
      "balance_after": "9.96"
    },
    "unavailable": {},
    "cached": false,
    "replayed": false,
    "fetched_at": "2026-11-11T08:00:00Z"
  }
}

Try it

This sends a real call to https://api.okdata.online and is billed as usual: at most $0.04. Failed calls are free. Your key goes only to that address and is never stored on this site.

Known limits

  • The whole list comes in one answer; there is no next page.

Returned fields

data.items is a list of KeywordRelated.

FieldTypeViewDescription
keywordstringcompactThe related keyword.
related_tostringcompactThe keyword asked about.
relationstring | nullcompactHow it relates: searched together (query), appears together in content (posts), searched before (prior) or after (after), or suggested as you type (suggestion).
rankinteger | nullcompactPosition among the keywords of the same relation, from 1.
relevancenumber | nullcompactHow closely it is related, 0 to 1.
search_indexinteger | nullcompactIts search index (the platform's measure, not a count); null where the platform gives none.
Show all 8 fieldsHide the other 2
FieldTypeViewDescription
composite_indexinteger | nullcompactIts composite index (the platform's measure of attention, not a count).
extobjectfullPlatform-specific extras. Only returned with view=full.

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.

When it is charged

One call costs $0.04 and returns one page of about 98 results. Collecting 1,000 results takes about 11 calls, $0.44 in total. Each page is a separate call; failed calls are not charged.

Data comes back$0.04 per call

Bad parameters, errors, timeoutsFree

WhenCharge
Most one call costs$0.04
An empty answer$0.04
Bad parameters, errors, timeoutsFree
A retry with the same Idempotency-Key within 24 hoursCharged once

A failed call is free; an empty answer costs $0.04; not found is free.

Prices from price book 1b273c48fea9634e. Every price on this platform →

Common errors

Every error has the same shape and says whether it was charged. The ones this endpoint can return:

HTTPCodeMeaningCharged
400invalid_paramsA parameter is missing, has the wrong type or value, or the method is wrong. problems lists each one; param names the first.Retry: after a fixno
401unauthorizedThe key is missing, malformed, revoked, disabled or expired (reason says which when known).Retry: nono
402insufficient_balanceThe balance (available) cannot cover the most this call could cost (required).Retry: after a fixno
429rate_limitedThe account sent too many requests this minute (reason: rate) or has too many calls running (reason: concurrency).Retry: yesno
500settlement_unknownThe data came back, but the charge could not be confirmed.Retry: with the same Idempotency-Keyunknown until looked up
502upstream_failedEvery data source for this endpoint failed on this request.Retry: yesno
503capability_pausedThis endpoint is paused right now; nothing ran.Retry: yesno
504timeoutThe data did not come back in time. The hold was released, so nothing was charged.Retry: yesno

All error codes →

Questions

How much does the Xiaohongshu PGY related keywords API cost?

One call costs $0.04 and returns one page of about 98 results. Collecting 1,000 results takes about 11 calls, $0.44 in total. Each page is a separate call; failed calls are not charged.

How do I get the next page?

Pass page.next_cursor from the response back as the cursor parameter. When page.has_more is false there is nothing left. Every page is its own call at $0.04.

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).

Use it in your AI

Paste this into Claude, ChatGPT, Cursor or any agent that can open a web page. It reads this endpoint’s page and calls it with your key.

Read https://okdata.online/apis/xiaohongshu/pgy/keywords/related.md, then call this endpoint for me through okdata; my key is in the OKDATA_API_KEY environment variable. Use Xiaohongshu PGY related keywords and sum up what comes back.

With the MCP server connected, just ask: Use Xiaohongshu PGY related keywords and sum up what comes back.

All 30 Xiaohongshu (RedNote) endpoints

Xiaohongshu (RedNote) API overview →Xiaohongshu (RedNote) API pricing →

Names and ID

Name
Xiaohongshu PGY related keywords API
Short name
Xiaohongshu PGY related keywords
ID
xiaohongshu.pgy.keywords.related
Endpoint
GET /v1/xiaohongshu/pgy/keywords/related
Category
Social media
Also called
rednote related searches, xhs keyword expansion
Returns
KeywordRelated[]: 8 fields

Connect once, then just ask.

Every new key comes with $0.10 to try it. One sentence connects your agent.

Start free
Connect your AI

Paste this into your agent

Read https://okdata.online/agents.md and set up okdata for me; my key is in the OKDATA_API_KEY environment variable.

Claude Code, Cursor, Codex and other agents that can open a link set themselves up from it.

MCP serverhttps://api.okdata.online/mcp