Server has 6 tools with proper schemas (Zod definitions visible) and descriptions in Korean. Naming follows verb patterns (greeting, calculator, get_time, generate_image, geocode, get_weather). Schemas are complete with types and descriptions for all parameters. However, descriptions are in Korean, limiting accessibility for English-speaking LLMs. Parameter descriptions are present but minimal (typically 10-50 chars). Error handling is present but basic. Output schemas are documented only through return type annotations (text/image content arrays). No tool annotations (readOnlyHint, destructiveHint, idempotentHint) present. Overall definitions meet baseline functionality but lack production-grade optimization for LLM selection and multi-step reasoning.

• Provide English descriptions for all tools alongside Korean versions to ensure LLM compatibility across locales. Current Korean-only descriptions reduce selection clarity.
• Add tool annotations via server.tool() metadata: mark read-only tools with readOnlyHint=true, destructive tools with destructiveHint=true, and idempotent tools with idempotentHint=true to guide agent retry logic.
• Document output schemas explicitly for geocode and get_weather. Specify fields like 'latitude', 'longitude', 'address' for geocode; 'temperature', 'condition', 'forecast' for weather.
• For geocode, document that results are paginated by limit; if API supports cursors or offsets, expose them in the response (e.g., next_offset field) and mention in description: 'Returns up to limit results. Use offset parameter for pagination.'
• Add recovery guidance to error messages. E.g., in get_weather, if timezone validation fails: 'Invalid timezone. Call get_time() to discover available timezones, or use UTC.'
• Move Hugging Face token requirement into a pre-flight check with a clear error message: 'Hugging Face API token not configured. Set hfToken in server config.' Do not mention it in the parameter description.
• Add parameter constraints documentation. E.g., for get_weather forecast_days, state 'Must be 1 - 16; values >3 may be less accurate' to help LLMs choose appropriate values.
• Consider splitting greeting and calculator into read-only demonstration tools with explicit annotations to clarify they are safe, idempotent examples suitable for testing.