Critical gaps across all dimensions. Tool definitions lack proper schemas, descriptions are minimal or in Chinese without English translations, and parameter documentation is sparse. 9 tools total: 5 travel tools (search_destination_info, search_weather_info, search_attractions, search_hotels, search_restaurants) have basic descriptions but no visible input schemas in the provided code. 4 weather tools (2x get_daily_forecast, 2x get_weather_warning) show duplicate names and inconsistent descriptions. No error handling guidance, no output schemas documented, no tool annotations. Schema visibility is severely limited, only parameter names and types are inferred from JSON snippets, not full JSON Schema definitions. Per-tool scores average 28 due to missing schemas (0 points) and minimal descriptions (10-30 points).

• Example: 'search_destination_info' should be 'Search comprehensive travel destination information including attractions, guides, and cultural background using DuckDuckGo. Returns structured results with URLs and summaries.'
• Define complete JSON Schema for all tool inputs with type, description, enum constraints, and min/max bounds. Example: search_hotels should have budget as enum ['budget', 'moderate', 'luxury'] not free-form string.
• Document output schemas for each tool. Specify returned fields (e.g., title, url, snippet, rating) and structure (array of objects, pagination fields). Include example responses.
• Deduplicate tools: merge the two get_daily_forecast and two get_weather_warning definitions. If they serve different purposes, rename one (e.g., get_daily_forecast_detailed) and document the distinction.
• Add error handling guidance in descriptions: 'Returns error if location not found or API timeout occurs. Retry with simplified location name (e.g., city only). If persistent, suggest alternative search tool.'

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

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