This MCP server exposes 6 social media trending tools with significant quality gaps. While tool names follow verb_noun conventions and most include basic descriptions, the schemas are incomplete, parameter descriptions lack required context, and error handling is minimal. Tool outputs are either unstructured strings or minimally typed. The server lacks pagination controls, input validation guidance, and structured error recovery paths. Average tool score: 42/100.

• Convert tiktok_trending_global return type from string to List[Dict] with fields: video_id, author, description, hashtags, plays (int), likes (int), comments (int), shares (int), engagement_rate (float). Return 10-20 videos max per Baselines.
• Convert get_this_weeks_reels_trends to return typed dicts: ensure every item has (name, date, stats_dict) structure. Cap results at 20. Document field types in tool description.
• Add enum constraint to get_yt_trending_by_region: region_code must match ISO 3166-1 alpha-2 (US, IN, GB, etc.). List common regions in description or accept both code and country name.
• Add numeric constraints to all limit/max_comments parameters: min=1, max=100 (or appropriate cap). Document defaults and limits in descriptions.
• Formalize output schemas in docstrings for all tools. E.g. 'Returns: List[{title: str, url: str, views: int}]' instead of just 'List[Dict[str, str]]'.
• Replace error handling that returns None or raw strings with structured responses: {'success': false, 'error_code': 'AUTH_FAILED', 'error_message': '...', 'recovery': 'Check API key in server config'}.
• Move TikTok API key injection to server startup via environment variable validation, not per-tool. Warn in server logs if key missing, but never expose in tool responses.
• For get_this_weeks_reels_trends, either (a) switch to an official Instagram/Meta API endpoint, or (b) add explicit cache + staleness warning in description: 'Cached data, updated weekly. May be incomplete.'
• Add pagination parameters to tiktok_trending_global and get_comments_yt: (offset, limit) or (cursor, limit). Default limit to 10-20, not unbounded.