Tool definitions are severely incomplete. Only 1 of 5 tools (search_videos) has a visible input schema in the provided source. The other 4 tools lack documented schemas entirely, they are inferred from registry.ts references but actual definitions are not shown. Descriptions are present but generic (10-50 chars), well below the 194-char baseline for A+ tools. No parameter descriptions visible for any tool. No output schemas documented. Error handling and recovery guidance absent. This server cannot be confidently recommended for production use.

• Add complete JSON Schema definitions for all 5 tools. Each must include type, description, and constraints for every parameter. Example: {"type": "object", "properties": {"query": {"type": "string", "description": "Search query (1-500 chars)", "minLength": 1, "maxLength": 500}}, "required": ["query"]}
• Expand tool descriptions to 100-200 chars. Include WHAT it does, WHEN to use it vs similar tools, and what it returns. Example: 'Search YouTube videos by keyword. Use this to find specific content; use scan_channel to explore a creator's uploads. Returns up to 20 results with video_id, title, channel, and duration.'
• Document output schemas for each tool. Specify which fields are returned (video_id, title, channel_id, duration, etc.) and their types. Include pagination info if applicable.
• Add parameter descriptions for all inputs. For 'query', specify: 'Search query (1-500 characters). Supports YouTube search operators like channel:, before:, after:. Returns up to 20 results sorted by relevance.'
• Implement error handling with recovery guidance. Example: 'Channel not found. Try search_videos() to find the creator, then scan_channel() with the correct channel ID. Available channels: [list]'

Inferred effective spec: 2026-07-28+.

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