Single tool with minimal definition quality. The tool 'get-selfie-analysis' has a basic description in Korean, a simple input schema with one string parameter, but lacks critical elements: no output schema documentation, no error recovery guidance, no parameter constraints, and the implementation is a hardcoded stub. The tool is directly registered via server.tool() with Zod schema, so definition is visible, but quality is poor across all dimensions.

• Rewrite tool description in English, following the pattern: 'Analyzes a selfie image URL and returns skin condition assessment. Input: image URL (HTTPS, JPEG/PNG, <5MB). Output: structured assessment with skin type, concerns, and recommendations. Requires active image analysis service at {API_ENDPOINT}.' This clarifies purpose, input format, and output structure for LLMs.
• Add constraint to imageUrl parameter: 'HTTPS URL pointing to a JPEG or PNG image, max 5MB. Must be publicly accessible.' Replace free-form string with a pattern or validation rule.
• Document the output schema explicitly: 'Returns {content: [{type: "text", text: string}]} where text is a JSON-serialized assessment object with fields: {skinType: string, concerns: string[], recommendations: string[]}. Example: {"skinType": "oily", "concerns": ["acne", "shine"], "recommendations": ["cleanser", "SPF"]}'.
• Replace hardcoded stub with actual implementation. Uncomment and fix the sendImageFromUrl() function or implement a call to the real image analysis API. Ensure the API endpoint is configurable via environment variable (e.g., SKINCARE_API_BASE).
• Add structured error handling: catch network timeouts separately from parse errors. Return {content: [{type: "text", text: 'Image analysis failed: {error_code}. {recovery_hint}.'}]} where error_code is one of TIMEOUT, INVALID_IMAGE_FORMAT, IMAGE_TOO_LARGE, SERVICE_UNAVAILABLE. Include recovery hints: 'Try a different image' or 'Wait a moment and retry'.
• Remove unused dependencies (express, multer) and unused imports (axios). Clean up type.ts which contains weather-related types unrelated to skincare.