Every request covers a crawl-time window that starts at ts. By default it is the last 3 days.
ts parameterts is a Unix timestamp in milliseconds marking the start of your search window (10-digit second timestamps are converted automatically). The window applies to when a review was crawled, not published:
https://api.webz.io/reviewFilter?token=YOUR_TOKEN&q=laptop&ts=1749121632000
With order=desc and the default crawled sort, ts marks the end of the window instead - you get reviews crawled before it, newest first.
Every request also filters on publication date: only reviews published within the last 31 days are returned, regardless of ts. Older data - up to the last 5 years - is available via the News, Blogs, Forums & Reviews Archive.
The Segmentation API window is capped at the last 31 days.