Single tool with basic schema and description. Tool name 'latest_news_headlines' is verb-noun compliant. Description exists (194 chars) but lacks actionable guidance on when to use vs alternatives, prerequisites, or error recovery. Input schema present with types and descriptions for all 3 parameters, but parameters lack constraints (enums, ranges, patterns). Output schema documented in description only (not in code-visible schema). No error handling guidance, function silently returns empty list on API failure, leaving LLM unaware of failure reason. Parameters marked optional in description but function signature shows no defaults, creating ambiguity.

• Add enum constraint to 'category' parameter: {"enum": ["business", "entertainment", "general", "health", "science", "sports", "technology"]} to prevent hallucinated categories.
• Add pattern and description to 'country' parameter: {"pattern": "^[a-z]{2}$", "description": "2-letter ISO 3166-1 country code (e.g., 'us', 'gb', 'de'). Defaults to 'us'."} to enforce valid codes.
• Add bounds to 'page_size': {"minimum": 1, "maximum": 100, "description": "Number of headlines to return (1-100). Defaults to 10."} to prevent absurd requests.
• Modify error handling to return structured error response: instead of empty list, return {"error": "Failed to fetch news: <reason>", "retry": true, "suggestion": "Check NEWS_API_KEY is set and NewsAPI is accessible"} so LLM knows to retry or ask user.
• Add pagination: accept 'page' parameter (default 1), return {"articles": [...], "total_results": N, "page": 1, "total_pages": M} so LLM can fetch multiple batches.