Vector Task MCP has a solid foundation with 10 well-named tools using verb_noun conventions (task_create, task_update, task_delete, task_get, task_list, task_search, task_stats, task_add_comment, task_normalize_tags, cookbook). Descriptions are present for all tools and most parameters. However, critical gaps exist: (1) Output schemas are NOT documented anywhere in the source, LLMs cannot see what fields are returned, which violates the 'Document the output schema' pattern; (2) Several parameter descriptions lack specificity about format/constraints (e.g., priority values 'low, medium, high, critical' are stated in the description but not as enums in the schema, forcing LLMs to infer valid values); (3) Task tags are described as 'List of tags (optional)' without specifying max length, character restrictions, or deduplication rules; (4) Similarity threshold parameters (threshold 0-1) lack guidance on what values mean (0.5 = moderate similarity? 0.9 = very similar?); (5) Descriptions are generally adequate (100-150 chars) but miss context about when to use related tools (e.g., when to call task_search vs task_list). The security validation module is present and used (validate_tags, validate_task_list_params), showing good internal discipline, but this is not visible in the tool definitions themselves. Naming is A-grade; schema/output documentation is C-grade.

• Add output schema documentation to every tool. Example for task_get: 'Returns: {id: int, title: string, content: string, status: string, priority: string, parent_id: int|null, tags: [string], estimate: number|null, time_spent: number|null, created_at: ISO8601, updated_at: ISO8601, comments: [{id: int, text: string, created_at: ISO8601}]}'
• Convert priority and status descriptions into proper JSON Schema 'enum' constraints. Example: 'status': {type: 'string', enum: ['open', 'in_progress', 'resolved', 'closed'], description: 'Task status...'}
• Add min/max constraints to numeric parameters. Examples: 'estimate': {type: 'number', minimum: 0, maximum: 10000, description: 'Time estimate in hours (0-10000)'}; 'limit': {type: 'integer', minimum: 1, maximum: 100, default: 50}; 'threshold': {type: 'number', minimum: 0, maximum: 1, default: 0.9, description: 'Similarity threshold (0=any match, 1=exact)'}
• Clarify destructive operations. Update task_delete description: 'Delete a task. Cascades to all subtasks. This action is permanent and cannot be undone. Consider archiving instead for reversible retention.'
• Add tool-selection guidance. Example for task_search: 'Use this for semantic/natural-language searches. For structured filters (status, priority, tags), use task_list instead.'
• Document pagination for list tools. task_list shows limit/offset but no guidance on total count or whether results are complete. Add to description: 'Returns up to `limit` results. Use offset for pagination. Response includes total_count to enable efficient pagination loops.'