The MCP Weather Server has ONE tool (WeatherService tools), but the source code provided does NOT include the actual tool definition, implementation, or schema. The evaluation is based on: (1) pom.xml shows spring-ai-mcp-server-spring-boot-starter dependency, indicating Spring AI MCP integration; (2) McpServerSimpleApplication.java registers tools via MethodToolCallbackProvider.builder().toolObjects(weatherService).build(), but the WeatherService class itself is NOT provided, only a filename is cited; (3) the Dockerfile shows STDIO transport (-Dspring.ai.mcp.server.stdio=true); (4) no tool names, descriptions, parameters, schemas, or error handling are visible in the provided source. The tool reference is purely inferred from the file path (src/main/java/cn/baruto/mcp/server/weather/service/WeatherService.java), and the implementation is completely absent. Per the hard scoring rule: 'If you cannot see the actual tool definition in the source (only inferred): cap that tool's overall at 50.' Since no tool definition is visible at all, the score reflects complete absence of verifiable quality signals.

• Provide the complete WeatherService.java source code with all tool method definitions, including @Tool or @ToolMethod annotations (if using Spring AI), parameter names, types, descriptions, and return types.
• Define tool names using verb_noun convention: get_weather_current, get_weather_forecast, list_supported_locations, search_location_by_name, etc. Each tool should have exactly one responsibility.
• Add comprehensive descriptions to every tool (50-200 chars) stating: What does it do? When should the LLM call it? What are prerequisites? Example: 'Get current weather conditions for a specified location. Returns temperature, humidity, wind speed, and weather description. Useful for answering "What's the weather in [location]?" queries.'
• For each parameter, add type declarations and descriptions. Example: location (string, required): 'City name or latitude,longitude coordinates. Examples: "San Francisco", "37.7749,-122.4194". Supports partial matches.' units (enum: celsius|fahrenheit, default: celsius): 'Temperature scale for response.'
• Document the complete output schema with typed fields: { temperature: number, humidity: number, wind_speed: number, description: string, location: string, timestamp: ISO8601 }. Include pagination if returning multiple locations or forecast days (limit, offset, total_count).
• Implement error handling that guides recovery: 'Location "San Franciso" not found. Did you mean: San Francisco, CA or San Fracisco, MG? Use get_supported_locations() to browse available locations.' Categorize errors as retryable (rate limit, timeout) vs user-fixable (invalid location).