SEARCH the signed-in user's own YouTube catalogue and LIST the videos that match, by what is written in their titles, descriptions and tags. This is RETRIEVAL, not ranking: call it whenever the user wants to FIND or LIST videos rather than judge them. Use it for 'which of my videos are about X', 'show me every video where I talked about X', 'find my videos mentioning X', 'which videos have a referral or affiliate link in the description', 'list all my videos', 'what have I made about X', or any question whose answer is a SET of their videos. Also use it to pull ONE video's full record (its complete description, tags, length, views): pass that video's title as `video`. Leave everything empty to browse the whole library newest first. Results are paginated: each answer says how many matched and the `offset` to pass to see the next page, so keep asking to walk a large catalogue rather than stopping at the first page. It searches only what the creator WROTE, never what is spoken in the video. For how a video PERFORMED use analyze_video; for the best performers use find_best_videos. Needs no input: it reads their real connected YouTube channel directly. Never ask the creator anything first, not for context, not for a link, not for a title you could look up; call it immediately.