Single tool with minimal schema definition, sparse parameter description, and no output schema documentation. The tool is explicitly registered via @mcp.tool() decorator in main.py, making it directly visible. However, the parameter 'location' has a basic type hint but lacks a substantive description in the FastMCP decorator. No enum constraints, no validation guidance, no error recovery hints. The tool description ('Get weather info for specific location.') is only 42 characters, below the baseline average of 194 chars, and provides no context on when to use it, what it returns, or how it handles errors. The underlying implementation calls an external API (wttr.in) with basic error handling (try/except), but no structured output schema is declared. The response is wrapped in a dict with 'result' or 'error' keys, but this structure is not documented in the tool definition.

• Expand tool description to 80-150 characters explaining: (1) what it returns (current weather for a location), (2) when to use it (user asks about weather, temperature, conditions), (3) expected input format (city name, e.g., 'New York', 'London'). Example: 'Get current weather conditions for a city. Accepts city names (e.g., New York, London). Returns temperature, conditions, and humidity. If location is not found, suggests similar city names.'
• Add explicit description to the 'location' parameter in FastMCP decorator or docstring. Specify: expected format (city name only, not coordinates), examples (New York, Paris), any character limits, what to do if city name is ambiguous.
• Document the return schema. Explicitly declare output as a dict with keys: 'result' (str, weather summary on success) or 'error' (str, error message on failure). Include sample output.
• Enhance error handling: catch specific exception types (URLError for network issues, HTTPError for API errors) and return structured errors. E.g., '{"error": "Location not found", "suggestion": "Try a different city name or verify spelling", "retryable": true}'
• Add timeout handling. The urllib.request call has no timeout, set a reasonable limit (e.g., 10 seconds) and return a clear timeout error if the external service is slow.
• Document the external API dependency (wttr.in) and any rate limits or terms of service constraints that agents should know about.