Two tools with clear action verbs (get_alerts, get_forecast) and reasonable descriptions (51-63 chars, within typical range). Input schemas are present with type information and parameter descriptions. However, output schemas are completely undocumented, both tools return unstructured strings ('str' return type visible in code, no schema describing what fields/structure the strings contain). Error handling is minimal: network failures return generic 'Unable to fetch' messages without recovery guidance. No pagination support despite potential for large alert lists. No input validation constraints (e.g., valid state code format for get_alerts). Parameter 'state' lacks enum constraint for 50 US states, inviting hallucinated values. No documentation of what structured fields are present in returned alert/forecast strings, forcing LLMs to parse unstructured output.

• Document output schemas. Instead of returning unstructured strings, return structured JSON objects: {alerts: [{event, area, severity, description, instructions}]} for get_alerts; {forecasts: [{period, temperature, wind_speed, wind_direction, forecast_text}]} for get_forecast. This allows LLMs to extract and chain data without string parsing.
• Add enum constraint to 'state' parameter: valid values are the 50 US state codes (AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY). This prevents hallucinated invalid codes.
• Add bounds validation to latitude/longitude: latitude -90.0 to 90.0, longitude -180.0 to 180.0. Document in parameter descriptions.
• Add pagination to get_alerts: accept optional 'limit' (default 20, max 100) and 'offset' (default 0) parameters. Return {alerts: [...], total_count: N, offset: 0, limit: 20}.
• Improve error messages. Instead of 'Unable to fetch alerts', return: 'Failed to fetch alerts for state CA: Invalid coordinates or state code. Verify state is a 2-letter US code (e.g., CA, NY).' Categorize errors as retryable (network timeout → retry) vs user-fixable (invalid state code → fix input).
• Document what each tool returns. Add docstrings describing output structure: 'Returns a list of active weather alerts with event, area, severity, description, and instructions. Returns empty list if no alerts.' This helps LLMs know what to expect.