Critical failures across all dimensions. Of 30 tools, 7 have NO descriptions (kakao_search_web through kakao_search_video, get_news, fetch_url, http_request). 23 tools lack visible input schemas in the provided source, only 7 show explicit schema definitions (get_exchange_rates, get_fuel_avg_price, get_fuel_sido_price, get_fuel_low_top10, get_stock_price, get_stock_analysis_data, get_real_estate_data, search_bus_stop, get_bus_arrival, get_subway_arrival, get_current_weather, get_weather_forecast, search_dart_company, get_dart_disclosures, get_dart_financials, get_dart_dividend_info, get_dart_multi_financials, get_recommended_books, search_pixabay_images). Tool names are inconsistent: some use verb_noun (get_exchange_rates), others use verb_noun_noun (get_dart_multi_financials), and several are bare nouns (kakao_search_web). No evidence of output schemas, error recovery guidance, or parameter validation. The cmd/list.go file only lists tool names and categories, actual tool registration logic is not visible in the provided source.

• Add descriptions to all 9 undescribed tools (kakao_search_*, get_news, fetch_url, http_request). Each description must answer: What does it do? When to use it? What does it return? Target 50 - 200 characters per pattern:tool-description.
• Expose tool registration code (likely in a handler or server initialization file not shown). Verify all 30 tools have explicit JSON Schema input definitions with type and description for every parameter. Cap at 0 if schemas are missing.
• Document output schemas for all tools. For each tool, specify the response object structure, field types, and which fields are required for chaining (e.g., if get_real_estate_data returns deal_id, ensure downstream tools accept deal_id).
• Add error recovery guidance to tool descriptions. E.g., 'If no results found, try a broader search term' or 'If API rate limit hit, retry after 60 seconds.' Reference pattern:recovery-guide.
• Rename kakao_search_* tools to clarify intent: search_kakao_web, search_kakao_blog, search_kakao_cafe, search_kakao_book, search_kakao_image, search_kakao_video, search_kakao_places. Consistent verb_noun naming reduces LLM confusion.

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

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