This MCP server collection exhibits significant quality gaps across the 5 tools. Tool names are verb-forward (add, multiply, get_weather, greet, search_docs), which is correct, but descriptions range from minimal to adequate. Most critically, the server lacks structured output schemas for responses, parameter descriptions are sparse or absent, and there is no error handling guidance. The tools are READ_ONLY operations (good), but the definitions do not meet production quality baselines. The search_docs tool description is in Chinese, mixing languages inappropriately for an LLM-facing interface. Parameter descriptions are present in the schema inspection but extremely terse (e.g., 'First number', 'Location name'). No tool declares output structure, and there is no documentation of how results are serialized. The math_server and weather_server examples show use of FastMCP, which is current, but the tool definitions themselves are skeletal.

• Expand all tool descriptions to 50 - 200 characters, following LLM-optimized patterns: state WHAT the tool does, WHEN to use it (vs. similar tools), and WHAT happens. Example: 'Multiply two integers. Use when you need a product of exact whole numbers; avoid for decimals or currency (use calculator tool instead). Returns an integer result or an error if inputs overflow.'
• Translate search_docs description to English: 'Search the internal knowledge base by keyword. For demo use; in production, connect to a database or vector retrieval system. Returns matching entries or a not-found message.'
• Document output schemas for all tools. Example for add: 'Returns: {"result": integer, "operation": "add", "inputs": {"a": integer, "b": integer}}'
• Expand parameter descriptions to explain format, constraints, and intent. Example for get_weather: 'location (string): A geographic location name (e.g., city or region). Accepts formats: city name (London), city,country (London,UK), or coordinates (40.7128,-74.0060). Required.'
• Add error handling to tool docstrings. Example: 'Error cases: If location is not found, returns a list of similar locations for LLM suggestion. If the weather service is unavailable, returns a retry-safe timeout error.'
• For greet, ensure it is explicitly registered in the MCP server definition with full schema visibility.
• Add idempotentHint annotations (toolAnnotations) to all READ_ONLY tools to help LLMs identify which tools are safe to retry without side effects.
• Provide pagination examples if any tool could return many results (search_docs). Example: 'Supports limit (1 - 100, default 20) and offset parameters to fetch paginated results.'