Campaign measurement starts from a date the team already has: ship day, embargo lift, keynote. The API does not take that date as a field on get_growth presets. It takes windows that sit after the date. POST https://api.trendsapi.ai/api. Window names are on the API reference. Search as a campaign check: the Google Trends guide. Plotters that skip the second parse will chart a string.
Pick the windows that sit after the date
A 7-day flight wants 7D and 1M. A quarter campaign wants 1M and 3M. Adding 12M answers "is the brand larger than last year," which is a different slide.
POST https://api.trendsapi.ai/api
Authorization: Bearer <api_key>
Content-Type: application/json
{"mode":"get_growth","source":"google search, youtube, wikipedia","keyword":"ChatGPT","percent_growth":["3M","12M"]}
Post-peak check on 27 Aug 2026 for a spring ChatGPT push: web search gave back 4.88% on 3M. YouTube search was still +44.12% on the same window. A "did it work" cell that averages those two will hide the leftover clip demand. Wikipedia is a third clock and should sit on its own slide.
Headlines when news series time out
type Google News Top News on 27 Aug 2026 did not list ChatGPT. That is a useful negative: the wire is elsewhere (Nepal aid, a trial, a storm). news volume and news sentiment remain the count and tone pair on REST. They timed out on MCP in this session. Leave those cells empty. Do not copy search growth into a "PR volume" column.
get_time_series on google search is the chart for the week of the keynote. Mark the date in the notebook. The API will not. YouTube notes: the YouTube guide.