Retrieves the full transcript of a specified YouTube video. This tool is useful for understanding video content without watching it, or for extracting textual information from videos. FORMATTING GUIDANCE (optional - user instructions override): When creating summaries, consider using: Key Points with Timestamps: Use [MM:SS] or [HH:MM:SS] inline references. Structure: Break into logical sections. Context: Include video title and channel. Example: 'The speaker explains TypeScript generics [05:30] and shows practical examples [08:15].' This formatting is optional - always follow any specific user instructions instead.

Searches YouTube for videos matching the specified query. Returns a list of video results with title, video ID, and channel information. Results are sorted by rating by default for better quality content.

Searches YouTube for channels matching the specified query. You can specify a sort order for the results (default: rating).

Retrieves a list of videos from a specified YouTube channel. This tool is useful for getting all videos uploaded by a specific channel.

Captures a screenshot from a YouTube video at a specified timestamp. Requires yt-dlp for full-quality captures; falls back to lower-resolution YouTube storyboards (320x180 max) if yt-dlp is not installed.