Server provides 2 well-named tools with good descriptions and basic input schemas. Both tools follow verb_noun naming conventions (get_alerts, get_forecast) which is excellent for LLM clarity. Descriptions are present and adequate (70-80 chars each), meeting the 10-1024 char baseline. However, schemas lack critical details: no enum constraints on state parameter, no min/max bounds on latitude/longitude, and output schemas are completely undocumented. Error handling exists but is generic (returns 'Unable to fetch...' without recovery guidance). The tools are simple READ_ONLY operations with async httpx calls, showing competent implementation, but lack the structured output documentation and parameter constraints that production-grade tools require.

• Add enum constraint to state parameter. Define valid values as all 50 US state codes (AL, AK, AZ, AR, CA, ..., WY) directly in the input schema. This prevents hallucinated state codes and makes valid options machine-discoverable.
• Document output schema for both tools. Instead of returning free-text strings, return structured JSON objects with fields like {alerts: [{event, area, severity, description, instructions}]} or {periods: [{name, temperature, temperatureUnit, windSpeed, windDirection, detailedForecast}]}. This enables LLMs to extract specific fields and compose with downstream tools.
• Add bounds validation to latitude/longitude parameters. Set minimum -90, maximum 90 for latitude; -180, 180 for longitude. Add description text: 'Latitude must be between -90 and 90 (south to north). Longitude must be between -180 and 180 (west to east).'
• Replace generic error responses with actionable recovery guidance. For invalid state: 'Invalid state code: "{state}". Must be 2-letter code (AL, AK, AZ, ..., WY). Did you mean: {closest_match}?'. For invalid coordinates: 'Invalid coordinates: latitude {latitude}, longitude {longitude}. Latitude must be -90 to 90; longitude must be -180 to 180.'
• Add input validation inside tool handlers. Before making API requests, validate that state is uppercase and 2 letters, latitude/longitude are in valid ranges, and coordinates are non-null. Return clear error messages immediately if validation fails.
• Consider adding documentation of what the NWS API returns (e.g., HTTP status codes, error conditions) so handlers can distinguish between 'bad input' and 'service error' and respond appropriately.