The server exhibits significant gaps across definition quality. Of the three tools, only fetch_news_articles has a reasonably detailed description; add and get_weather have minimal descriptions (5-7 chars). All three tools have schemas with type definitions present, but descriptions for parameters vary widely. fetch_news_articles parameters are well-documented with format hints (YYYY-MM-DD); the other tools lack parameter detail. Error handling is minimal, only fetch_news_articles attempts exception handling, and the get_weather tool returns a hardcoded value (45) unrelated to actual weather. Tool naming follows verb-noun convention adequately (fetch_, add, get_), but descriptions lack the depth needed for LLM selection and composition. No output schemas are documented; return types are mentioned in docstrings but not formally specified. The add and get_weather tools are stub implementations that do not reflect real functionality.

• Expand descriptions for add and get_weather to 50 - 150 characters. E.g. add: 'Add two integers and return their sum. Useful for arithmetic operations in workflows.' get_weather: 'Retrieve the current temperature in Celsius for a given city name. Returns a numeric temperature value.'
• Document output schemas explicitly. For add, state 'Returns int: the sum of a and b.' For get_weather, state 'Returns int: temperature in Celsius.' For fetch_news_articles, formally specify the structure: { all_data: [ { title: string, author: [string], url: string, text_preview: string, full_text: string, publish_date: string } ], error?: string }
• Add contextual error handling to add and get_weather. E.g. for get_weather, catch network errors and suggest 'Could not fetch weather. Check your API key or network connection.' if the call fails.
• Implement real get_weather logic (call a weather API, validate city input) instead of returning a hardcoded 45.
• Document default parameter values and constraints in descriptions. E.g. for fetch_news_articles, add: 'max_results: 1 - 100, default 5. Capped for performance.'
• Add parameter descriptions for add: 'a (int): first operand. b (int): second operand.' Currently the schema has descriptions but they are generic.
• Specify date format constraints for fetch_news_articles in the description: 'Dates must be ISO 8601 (YYYY-MM-DD). If earliest_date > latest_date, returns empty results.'
• For fetch_news_articles, document the limit on max_results and the behavior when fewer results are available than requested. E.g., 'If fewer than max_results articles match the query, all matching articles are returned.'