Single tool with minimal definition quality. Tool name 'getWeatherForecastBrazil' violates verb_noun convention (should be 'get_weather_forecast_brazil' or similar). Description is generic ('MY OWN Get weather forecast...') and under 50 chars, providing no context on when/why to use it. Input schema present but sparse: only 'location' param with basic string type, no enum constraints, no format guidance, no examples of valid inputs. No output schema documented. No error handling guidance. Tool definition inferred from test file rather than explicit server registration code, cannot verify actual MCP registration. Spring AI framework used but no evidence of tool annotation metadata (readOnlyHint, destructiveHint, idempotentHint) in source.

• Rename tool to 'get_weather_forecast' with location as a required parameter. Use snake_case to match MCP conventions and LLM parsing expectations.
• Expand description to 100-150 characters: 'Retrieves weather forecast for a Brazilian city. Returns temperature, humidity, wind speed, and precipitation probability for the next 7 days. Use when user asks about weather conditions.'
• Add enum constraint to 'location' parameter listing valid Brazilian cities (or at least top 20: São Paulo, Rio de Janeiro, Brasília, Salvador, Fortaleza, etc.). Replace example with formal constraint.
• Document output schema explicitly: 'Returns object with fields: city (string), forecast (array of {date, temp_high, temp_low, humidity, wind_speed, precipitation_chance}), last_updated (ISO 8601 timestamp)'.
• Add error handling guidance: 'If location not found, returns error with list of similar city names. If API unavailable, returns 503 with retry-after guidance.'