This server provides 9 well-intentioned YouTube research tools with reasonably complete schemas and descriptions. However, there are significant gaps in parameter constraints, output schema documentation, error handling guidance, and composition clarity. Naming is generally verb-noun compliant. Descriptions are present but often lack actionable context (e.g., no guidance on when to use collect_research_sources vs search_videos). Parameter types are defined but enums are missing for constrained fields like 'order' (relevance|time), 'search_order' (relevance|uploadDate|viewCount), and 'comment_order'. Output schemas are not documented, LLMs must infer structure from model names. No recovery guidance for common failures (transcript unavailable, API quota exceeded). Security is adequate (no exposed credentials) but lacks permission declarations and audit trail specification.

• Convert 'order', 'search_order', and 'comment_order' parameters from free-text strings to enum types with explicit allowed values (e.g., order: enum[relevance, time]).
• Document output schemas in tool descriptions. Add a 'Returns' section specifying fields. Example: 'get_transcript returns {video_id, transcript_text, language, is_generated, duration_ms}.'
• Add recovery guidance to descriptions. Example for get_transcript: 'Returns an error if the video has no captions. Some videos auto-generate captions after a delay, try again in a few minutes.'
• Clarify the purpose and use case of each 'collect_*' and 'analyze_*' tool in their descriptions. Example: 'Use collect_research_sources to find videos and their transcripts for a topic. Use analyze_videos if you already have specific video URLs.'
• Replace max_transcript_chars=0 default with a clear description or use None. Document: 'Max transcript length in characters. 0 or null = no limit.'
• Add validation rules to parameter descriptions. Example: 'max_results: integer between 1 and 50. Defaults to 5.'
• Expand get_quota_status description to include output fields and action guidance. Example: 'Returns {daily_quota, used_today, remaining}. If remaining < 100, consider waiting until the quota resets at midnight.'
• Explain what happens when optional parameters are omitted. Example for languages: 'If omitted, the tool auto-detects the transcript language. Provide a list to prefer specific languages.'
• Add pagination to search_videos, collect_research_sources, and collect_research_discussions. Include max_results and next_cursor (or offset) in responses.

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry