The server has 3 tools with complete input schemas and descriptions. However, the definitions exhibit several quality gaps: (1) the `draft_email` tool has a critical input schema mismatch, the docstring documents parameters 'news', 'to', 'cc', 'bcc' but the actual input schema is empty `{}`, causing a 0 schema score; (2) parameter descriptions in `search` and `get_top_headlines` are present but overly verbose with embedded argument docs, not optimized for LLM selection; (3) output schemas are documented only in descriptions, not formally returned; (4) no error handling guidance is visible. The `search` and `get_top_headlines` tools are well-structured with proper enum constraints (e.g., category options, sort_by values) and reasonable defaults, earning them higher scores. The composition is sound, tools are single-purpose and chainable (search/headlines → draft_email).

• Fix draft_email: add explicit input parameters to the schema (news: SearchResult, to: string with default, cc: array, bcc: array). The docstring promises these parameters; the schema must match.
• Refactor tool descriptions: remove 'Args:' documentation from the description text. Move that detail to parameter descriptions. Example: search description → 'Search for news articles by keywords, language, country, and date range'; parameter 'q' → 'Search keywords, supporting AND, OR, NOT, and quoted phrases'.
• Add formal output schema documentation: instead of just describing SearchResult in text, ensure the tool returns a typed object with documented fields (totalArticles: int, articles: array of Article objects with title, description, url, image).
• Document error cases and recovery steps for each tool. Example: 'If API returns 429 (rate limit), retry after 60 seconds' or 'If lang is invalid, available codes are: en, fr, de, es, it, pt, ru, ar, zh, nl, pl, sv, tr'.
• Add constraints to 'lang' and 'country' parameters: either define them as enums with valid ISO codes or clarify the format in the description. Example: 'ISO 639-1 language code (e.g., "en" for English, "fr" for French; full list available via GNews docs)'.
• For 'max_articles', document the default is 10 and range is 1-100. If the API silently clamps values, state this: 'Values outside 1-100 will be adjusted to the nearest boundary'.
• Add idempotency notes: are search calls with identical parameters guaranteed to return the same results, or does freshness matter? Agents retry on ambiguous failures, non-idempotent tools risk duplicate side effects.