Single tool with basic schema and minimal description. Tool name follows verb_noun pattern (get_current_weather), but description is only 44 characters in Indonesian, below the 50-200 char LLM-optimized range. Input schema is present with proper JSON Schema structure and city parameter has a description. However, no output schema is documented, and error handling provides generic messages without recovery guidance. Missing parameter constraints (e.g., city name format, length limits). No tool annotations for read-only nature despite being declared READ_ONLY in metadata.

• Expand tool description to 80-150 chars in English: 'Fetch current weather conditions for a city. Returns temperature, humidity, wind speed, and weather description. Call this when the user asks about weather in any location.'
• Document output schema in code comments or README: {type: object, properties: {city: string, temperature: number, humidity: number, condition: string, wind_speed: number}, required: [city, temperature, condition]}
• Add parameter validation: city name 1-100 chars, reject empty/null, return 'City name required and must be 1-100 characters' on failure.
• Enhance error messages with recovery hints: 'City "XYZ" not found. Available cities: Jakarta, Surabaya, Bandung' or 'Weather API timeout (30s). Retry in 10 seconds.'
• Add readOnlyHint annotation to tool schema to signal to MCP clients that this tool is safe to cache and retry without side effects.