TikTok search volume here means one thing: how hard people are looking for a topic or product phrase on TikTok, returned as weekly points on a 0-100 scale. Send source tiktok and a keyword to POST https://api.trendsapi.ai/api, and get the series plus growth over windows such as 3M and 12M. No TikTok developer app, no ads account, no approval queue. The hashtag-shaped version of this access problem sits on TikTok hashtag volume. This page is the planning use.
The call
POST https://api.trendsapi.ai/api
Authorization: Bearer <api_key>
{"mode":"get_growth","source":"tiktok","keyword":"air fryer recipes","percent_growth":["3M","12M"]}
One percent per window comes back. Swap get_growth for get_time_series when the shape matters: launches, spikes, and the week a phrase peaked. The envelope is {"statusCode": int, "body": string}, parsed twice, and only successful 200 responses count against quota. Caps sit on pricing.
TikTok first or Google first
The useful comparison is the lead time between platforms. A phrase rising on tiktok while google search is still flat is early; the same phrase peaking on both is late. Two calls, one keyword, one scale, and the gap is a number instead of a feeling. The full paired workflow sits on Compare TikTok and Google trends.
Boards for the day itself
Series work answers the quarter. The day belongs to get_top_trends with type TikTok Trending Hashtags or TikTok Trending Videos, which return the ranked boards with no keyword. Creators pairing the board with the series get the routine on Creator trends API.