Single tool with complete schema and good descriptions. Tool name 'get_transcript' follows verb_noun pattern. Input schema is well-structured with 4 parameters, all typed and described. Output schema documented with meta and content fields. Descriptions are clear and actionable (tool: 156 chars, params: 60-120 chars avg). Tool annotations present (readOnlyHint, openWorldHint). Main gaps: no error recovery guidance in descriptions, no parameter constraints (enums/patterns), no mention of rate limits or fallback behavior in tool description despite implementation supporting it.

• Add enum constraint to 'lang' parameter: enum: ['en', 'ko', 'es', 'fr', 'de', 'ja', 'zh', ...] or reference ISO 639-1 standard in description.
• Enhance error messages with recovery guidance: 'Invalid YouTube URL. Try: https://youtube.com/watch?v=VIDEO_ID or just the video ID (11 alphanumeric chars).'
• Update tool description to highlight ad-stripping default: 'Extract transcript from a YouTube video URL or ID. Automatically filters sponsored segments (strip_ads=true by default) and falls back to available languages if requested language unavailable.'
• Clarify metadata output format in schema: either return metadata as a separate object {title, author, subscriberCount, viewCount, publishDate} or document the pipe-delimited string format explicitly.
• Add rate limit and availability notes: 'Note: Some videos may not have captions. Requests are rate-limited; retry with exponential backoff if rate-limited.'