KOVO exposes 7 tools with partial schema coverage and inconsistent descriptions. All tools have descriptions (10-150 chars), but 5 of 7 lack complete input parameter schemas in the visible code. Tool names follow verb_noun convention (make_call, send_image, set_reminder, set_routine, list_routines, cancel_routine, start_live_call), which is good. However, parameter descriptions are sparse or missing entirely. The toolkit.py excerpt shows only tool names and brief descriptions; actual schema definitions are not visible in the provided source. This forces schema scores to 0 for tools where JSON Schema cannot be verified. Error handling and output documentation are absent. No evidence of idempotency, pagination, or recovery guidance.

• Publish complete JSON Schema for all tool inputs, including type, required fields, enum constraints, and format/pattern rules. Example: set_reminder.due_at should declare format='date-time' and provide a description like 'ISO 8601 datetime (e.g., 2026-07-03T15:00:00Z)'.
• Document output schemas for each tool. Specify success response structure (e.g., {success: bool, call_id: string, status: string}) and error response format (e.g., {error: string, code: string, retryable: bool}).
• Add actionable error messages. Instead of 'Call failed', return 'Call unanswered and voice message delivery failed, check Telegram bot token and owner_telegram_id in config.' Include recovery steps.
• Implement confirmation flow for destructive operations. For cancel_routine, return a confirmation request (MCP Multi Round-Trip Request pattern) asking 'Delete routine "daily_standup"? This cannot be undone.' before executing.
• Expand parameter descriptions with constraints and examples. E.g., 'message (string, 1-1000 chars): The message to speak aloud. Supports plain text; special characters are converted to speech.' and 'urgent (boolean, optional, default=false): If true, ring immediately; if false, queue for next available slot.'