The server defines 22 tools with consistent naming conventions and descriptions. All tools are verb-noun prefixed (query_, get_, manage_, compare_, find_, analyze_, log_), which is appropriate for the domain. All 22 tools have descriptions ranging from 50-100 characters, meeting the minimum threshold. Input schemas are present for all tools with parameter descriptions. However, there are significant gaps: (1) output schemas are entirely undocumented, no field listings, types, or return structures are visible in the provided code; (2) parameter descriptions are minimal (typically 1-2 sentences) and lack domain-specific guidance on format/constraints; (3) error handling and recovery guidance are absent; (4) write operations (manage_weight_data, manage_workouts, log_health_data) lack confirmation/dry-run patterns despite being irreversible; (5) no pagination guidance is documented beyond parameter names for tools like query_activities; (6) no authentication or permission documentation is present.

• Document output schemas for all 22 tools. For each tool, list the fields returned, their types, and what they represent. Example: 'query_activities returns {activities: [{id: int, name: str, type: str, distance: float, duration: int, timestamp: str}], total_count: int, next_cursor: str}'.
• Add confirmation/dry-run patterns to write tools. For manage_weight_data, manage_workouts, and log_health_data, offer a 'dry_run: bool' parameter or a separate 'preview_*' tool. This allows agents to review changes before committing.
• Replace free-form parameter descriptions with formal constraints. For analyze_training_period, declare period as an enum: ['7d', '14d', '30d', '90d', '1y', 'custom'] instead of using examples. Use regex patterns for date fields: '^\d{4}-\d{2}-\d{2}$|today'.
• Document pagination semantics explicitly. For all query_* tools accepting limit/start_index/cursor, add: 'Returns up to {limit} results. If total_count > start_index + limit, more results exist. Use next_cursor for efficient pagination; offset-based pagination via start_index is slower for large datasets.'
• Add error recovery guidance to all tools. Example: 'If activity_id is invalid, call query_activities first to discover valid IDs. Valid range: 1 - 2147483647.'
• Clarify the 'today' magic string in date parameters. Update descriptions: 'Date in YYYY-MM-DD format or "today" to use the current date in the user\'s local timezone.'
• Expand descriptions for empty-parameter tools. Example: 'get_user_profile returns {user_id, display_name, email, timezone, preferred_units, account_created_date, subscription_tier}. Call this first to confirm authentication and retrieve the user_id for use in other tools.'