Is YCS - YouTube Comment Search safe?
Clean risk
YCS fetches YouTube comments, transcripts and live chat from YouTube's own API to power its comment search, and caches them locally.
On youtube.com the extension injects a page-context script that calls YouTube's internal InnerTube API (youtubei/v1/next, live chat, and caption tracks) using your existing logged-in session to pull a video's comments, transcript and live chat. The collected data is stored only in a local IndexedDB cache keyed by video ID so the search feature can work. No data is sent to any server outside youtube.com.
0Risk
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Data recipients
www.youtube.com