Single tool 'get_weather' has critical definition gaps. Input schema visible but parameter 'location' lacks description (null value in schema). Tool description missing entirely, no text explaining what the tool does, when to use it, or what it returns. Output schema undocumented; response structure inferred from code only. Naming is acceptable (verb_noun pattern), but without descriptions and documented output, LLMs cannot reliably select or use this tool. Baseline: 100% of A+ tools have descriptions; 100% of A+ tool params have descriptions. This server has 0% on both counts.

• Add a tool description (50 - 200 chars): 'Get current weather conditions for a location. Returns temperature, conditions, and forecast. Accepts city name (e.g. "San Francisco") or coordinates (lat,lon).'
• Add description to 'location' parameter: 'City name (e.g. "San Francisco", "New York") or coordinates as "lat,lon" (e.g. "37.7749,-122.4194"). Required.'
• Document the output schema explicitly: 'Returns object with fields: temperature (number, Fahrenheit), condition (string), humidity (number, 0-100), wind_speed (number, mph).'
• Integrate a real weather API (OpenWeatherMap, WeatherAPI, etc.) instead of returning hardcoded mock data. Update tool to call external service and handle errors.
• Add input validation and error handling: validate location format, catch API timeouts/failures, return actionable errors like 'Location not found. Try a major city name or valid coordinates (lat,lon).'