Four tools with basic schemas and descriptions, but significant gaps in parameter documentation and error guidance. Tool names follow verb_noun convention (check_*, reserve_*), which is good. However, descriptions are minimal (10-50 chars), parameter descriptions are missing or vague, and output schemas are undocumented. The reserve_slot tool has TODOs indicating incomplete validation logic. Error handling returns generic strings rather than structured, actionable guidance. No tool annotations (readOnlyHint/destructiveHint) despite clear risk differences.

• Add 50-150 character descriptions to each tool explaining WHAT it does, WHEN to use it (vs similar tools), and WHAT it returns. Example: 'Check available room slots for a specific date. Returns list of rooms with free time slots. Call this after check_all_available_rooms to drill into a specific day.'
• Document output schemas. Specify that check_available_rooms_for_day returns a list of {room_id, room_name, available_slots: [{start_time, end_time}]}. This enables LLMs to extract and chain data correctly.
• Add parameter descriptions for all inputs. For 'day', specify 'ISO 8601 date (YYYY-MM-DD), e.g. 2025-01-15'. For 'start_time'/'end_time', clarify format is 'HH:MM' (24-hour), e.g. '14:30', and validate in code.
• Replace generic error strings with structured error objects including error_code, message, and recovery_hint. Example: {error: 'INVALID_DATE', message: 'Date must be YYYY-MM-DD format', recovery: 'Try a date like 2025-01-15'}.
• Complete TODO validations in reserve_slot. Add enum constraint for room_id (e.g. ['317', '450']). Validate time format and ensure start_time < end_time. Return clear validation errors with allowed values.

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry