What is the Douyin keyword index (Ocean Engine)?
It is the keyword index of Ocean Engine Trend Insight (巨量算数, Juliang Suanshu), a tool for how attention moves on Douyin and Toutiao. It scores a keyword day by day with a search index and a composite index: scores, not counts. DataXAPI returns them for Douyin, with related keywords, the audience behind a keyword and the tool's topic boards. DataXAPI reads Douyin with 36 endpoints, from $0.0020 a call; a failed call is not charged.
What it is and who runs it
Its site, trendinsight.oceanengine.com, describes Trend Insight as the brand of Ocean Engine (巨量引擎) for insight into content-consumption trends, drawing on Toutiao, Douyin and Xigua Video, with tools such as its indexes and rankings. Its keyword index covers two apps, Douyin and Toutiao.
Looking a keyword up there shows no fee. What is paid for is asking it to start covering a new keyword: a new keyword has figures from the day it is added, for one year, with no history before it, and approval and first figures take 3 to 7 working days.
What its figures mean
As its in-page help puts it: the search index is a weighted sum of the searches for a keyword and related content, and it says plainly that the search index does not equal the actual number of searches. The composite index is a weighted sum of related content, views and searches. The weights are not published.
For a group of keywords it adds them up after removing duplicates, from the day after the group is made, with no figures before. Its other scores are weighted sums too: a topic's heat from posts, views, likes, shares and comments; a video's from plays, likes, shares, comments and followers gained; a brand's from its content, ads, searches and live streams. Content relevance between two words is how often they appear together, over the sum of how often each appears.
What you can get through DataXAPI
douyin.index.keywords.history gives a keyword's daily search_index and composite_index over the dates you set, up to five keywords a call. douyin.index.keywords.related gives the keywords searched with it or appearing with it in one week; douyin.index.keywords.audience.get the age, gender, province, city and interest of the people behind it.
douyin.index.trends.list gives the tool's live and fastest-rising topic boards, douyin.index.brands.history a brand's daily search, content and spread indexes, and douyin.index.videos.search the high-index videos it puts forward for a keyword. No Trend Insight account of yours is used.
What it cannot give
A count of searches or of people: an index is a score. DataXAPI reads the Douyin side, not Toutiao. A keyword the tool does not cover is left out of the answer, and a day's figure usually comes a day or two late. We found no public API of the tool's own, and no published definition of a keyword's content or spread index.
Endpoints
Each with its price; every page has the parameters, the fields and a recorded response.
Sources
What this page says of other services is from their own pages and documents, read on 2026-10-29. Prices and features change: check the source before you decide.