Two tools with basic but incomplete definitions. Both have clear verb-noun naming (get_current_weather, get_forecast) and input schemas with typed parameters. However, descriptions are minimal (under 50 chars), parameter descriptions lack context about format/constraints, and output schemas are entirely undocumented. No error handling guidance, no pagination support despite forecast returning variable-length results, and API key exposed in source code (security risk). Tool definitions are directly visible in weather.py via @mcp.tool() decorators, so no inference penalty applies.

• Move API_KEY to an environment variable (e.g. WEATHERAPI_KEY) and load it via os.getenv(). Never commit secrets to source code.
• Expand tool descriptions to 80-150 chars. Example: 'Get current weather conditions (temperature, humidity, wind) for a location specified by latitude/longitude coordinates. Returns a summary of current conditions.'
• Add min/max constraints to latitude and longitude parameters in the schema and descriptions. Example: {"latitude": {"type": "float", "description": "Latitude in range -90 to 90 (decimal degrees)", "minimum": -90, "maximum": 90}}
• Return structured JSON instead of plain text. Modify both tools to return {"location": string, "condition": string, "temperature_c": number, "humidity_percent": number, "wind_kph": number} for get_current_weather and {"location": string, "forecast_days": [{"date": string, "condition": string, "avg_temp_c": number, ...}]} for get_forecast.
• Add error handling with recovery guidance. Catch httpx exceptions and return structured errors: {"error": "invalid_coordinates", "message": "Latitude must be between -90 and 90. Got: 95.5", "recovery": "Check coordinates and retry."}

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry