The server provides 5 well-named CRUD tools for todo management with consistent verb-noun naming (add_, get_, update_, complete_, delete_). All tools have descriptions and input schemas with typed parameters. However, output schemas are not explicitly documented in code, descriptions are minimal (10-30 chars, below ideal 50-200 char baseline), parameter descriptions are sparse in some cases, and there is no error handling guidance or recovery paths. The tool definitions are explicit (via [McpServerTool] attributes) and not inferred. Composition is clean (one responsibility per tool), but lack of structured output documentation and missing error context significantly impacts agent usability.

• Expand all tool descriptions to 50-150 characters. Include WHEN to use: 'Adds a new to-do item to the task list. Use this when the user wants to create a new task they mention. Returns the task ID needed for updates.'
• Document output schemas explicitly. For get_todo_items, specify: 'Returns an array of objects with {id: number, text: string, isCompleted: boolean}' or similar. Add a schema section to the tool registration or response documentation.
• Add recovery hints to error messages. When get_todo_items returns no items, include: 'No to-do items found. Use add_todo_item to create one.' When update fails, suggest: 'Task not found. Call get_todo_items to check available IDs.'
• Add pagination to get_todo_items. Accept optional parameters: limit (default 20, max 100), offset (default 0). Return {items: [...], total: number, hasMore: boolean}. This prevents context window overflow on large task lists.
• Add tool annotations for destructive operations. Mark delete_todo_item with destructiveHint=true in the schema to guide agents to ask for confirmation before calling.
• Consider adding a confirm_delete or soft-delete pattern. E.g., add a 'is_deleted' boolean flag instead of hard deletion, allowing recovery.
• Validate input early. For update_todo_item and complete_todo_item, if id is invalid (negative, zero, non-integer), return a clear error: 'Invalid task ID: must be a positive integer. Got: -5.' rather than relying on database rejection.