Skip to main content
API FastAPI Fast
← Back to Blog

TikTok Hashtag API Guide: Search, Trending, and Examples

Jan 26, 2026•API Fast Team

TikTok hashtag data powers trend discovery, creator research, and content planning. This guide shows how to fetch trending hashtags and run hashtag or keyword searches using API Fast, with clear examples and practical tips.

Need the full TikTok API reference? See the TikTok endpoints page: /docs/endpoints/tiktok.

When you should use a hashtag API

Use hashtag data when you need to:

  • Track trending topics in a specific region
  • Find posts related to a niche or campaign
  • Build discovery features for creators and marketers
  • Monitor changes in hashtag activity over time

The two TikTok endpoints you will use most

API Fast exposes TikTok endpoints with a unified REST API. For hashtags, these two endpoints cover the majority of use cases:

1) Trending hashtags

Use trending/hashtag to get a list of currently trending hashtags. You can filter by country and time period.

GET https://apifast.dev/api/tiktok/trending/hashtag

Common parameters:

  • country: ISO country code (example: US)
  • period: time window in days (7, 30, or 120)
  • limit: number of results per page
  • page: page number

Example request:

curl -X GET "https://apifast.dev/api/tiktok/trending/hashtag?country=US&period=30&limit=20&page=1" \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json"

2) Hashtag and keyword search

Use search/general for broad TikTok search across videos, users, and hashtags.

GET https://apifast.dev/api/tiktok/search/general

Common parameters:

  • keyword: the term to search (example: coffee)
  • cursor: pagination cursor (default 0)
  • search_id: pagination id for follow-up requests

Example request:

curl -X GET "https://apifast.dev/api/tiktok/search/general?keyword=coffee&cursor=0" \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json"

If you paginate, use both cursor and search_id from the previous response.

What the response looks like

Response fields vary by endpoint, but you will commonly see:

  • data: list of results
  • cursor and hasMore: pagination controls
  • statusCode or code: request status

When searching general content, items include fields like author, desc, and other content metadata you can use to rank or filter.

Practical use cases

Here are a few real use cases we see most often:

  • Trend alerts: Poll trending/hashtag on a schedule and alert when new hashtags appear.
  • Content research: Search search/general by niche terms to find fresh posts and creator angles.
  • Campaign tracking: Track brand or campaign hashtags to understand participation and momentum.

Pagination tips

Most search endpoints return a cursor and a search_id (for TikTok search). Store both and pass them into the next request to get the next page of results. This keeps pagination stable.

Rate limits and reliability

If you are polling for trends, avoid aggressive loops. Cache the trending list for a short period and refresh on a schedule. This improves reliability and keeps your usage predictable.

Ready to build?

Start with the TikTok endpoints list, then grab your API token and make your first request.