26 tools with consistent verb-noun naming (list_, find_, search_, get_, send_, edit_, delete_, save_, convert_). All tools have descriptions (10-200 chars, baseline 194). Input schemas present for all tools with typed parameters. However, critical gaps: (1) No output schemas documented, LLMs cannot infer response structure for chaining; (2) Parameter descriptions are minimal (avg 40-60 chars vs baseline 72); (3) No error handling guidance, tools return raw exception strings; (4) No pagination support despite list_my_chats and get_chat_members returning unbounded results; (5) Destructive tools (delete_message) lack confirmation/dry-run patterns; (6) No permission gates or scope declarations. Tools are functional but lack production-grade polish for agent reasoning.

• Document output schemas for all tools. Define response objects with typed fields (e.g., {chat_id: string, title: string, type: enum}). This enables LLMs to extract and chain data reliably.
• Add pagination to list_my_chats, get_chat_members, and search_in_my_chats. Accept limit (1-100, default 20) and offset/cursor parameters. Return total_count and next_cursor to guide multi-page traversal.
• Implement confirmation pattern for delete_message: add a dry_run parameter or require explicit confirmation via a separate confirm_delete tool. Prevent accidental data loss.
• Replace raw exception strings with structured error responses. Include error_code, message, and recovery_hint. E.g., 'Chat not found. Try search_in_my_chats() or list_my_chats() to find the correct ID.'
• Add permission checks and scope declarations. Verify caller has 'write:messages' before send_message, 'delete:messages' before delete_message. Log all sensitive operations for audit trails.