Server has 4 tools with significant quality gaps. Tool naming is inconsistent (add, calculate_bmi, get_user_weight, latest_news); only 2 of 4 start with action verbs. One tool (get_user_weight) lacks any description entirely. Parameter descriptions are present but minimal (avg ~30 chars vs baseline 72). Input schemas are visible and typed, but output schemas are undocumented. No error handling guidance, no pagination support, no structured output documentation. The 'latest_news' tool exposes API key via environment but lacks rate limiting and timeout handling.

• Add description to get_user_weight: 'Retrieve the current user weight in kilograms. Returns a string representation of weight.'
• Document output schemas for all tools. E.g., add: returns {type: integer}, calculate_bmi: returns {type: number, description: 'BMI value'}, latest_news: returns {type: object, properties: {articles: array, total: integer}}
• Rename latest_news to fetch_latest_news and add parameters: limit (1-50, default 20), language (enum: en, es, fr), category (enum: business, tech, sports, or null for all). Document pagination via next_cursor.
• Add error handling: wrap httpx calls in try-except, return structured errors like {error: 'API_TIMEOUT', message: 'News API did not respond within 10s. Try again in 30s.', retryable: true}
• Expand get_user_weight to accept optional user_id parameter and return structured {weight_kg: number, unit: string, last_updated: ISO8601_date} instead of hardcoded string.