The server defines two read-only stock tools with basic descriptions and parameter schemas. Both tools are properly named with action verbs (get_*) and have descriptions exceeding the 20-character minimum. However, there are significant gaps: parameter descriptions are minimal (single noun phrases rather than explanatory sentences), output schemas are not documented, error handling lacks recovery guidance, and tool annotations (readOnlyHint, etc.) are absent. The descriptions, while present, fall short of LLM-optimized guidance on WHEN to use each tool and what the outputs contain. This is typical of community servers, functional but not production-grade.

• Add output schema documentation to both tools. Declare what get_stock_price returns (a float price value, or a structured object with price, timestamp, currency?). Declare what get_stock_news returns (an array of {title: string, link: string, source?: string, date?: string} objects).
• Expand parameter description for 'symbol' from 'Stock ticker symbol' to 'Stock ticker symbol (2-5 uppercase letters, e.g. AAPL, GOOG). Must be a valid NYSE/NASDAQ/OTC symbol.'
• Add WHEN-to-use guidance: 'Call this to get the latest market price for a publicly traded stock. Returns the most recent regularMarketPrice from Yahoo Finance. Price data is real-time (not delayed).'
• Add recovery guidance to error descriptions: 'If symbol not found, try search_stocks(query=company_name) to find the correct ticker, or ask the user to confirm the symbol spelling.'
• Refactor get_stock_news to return structured JSON array instead of concatenated string. Change return type from str to List[Dict] and update caller to parse/format in agent.
• Declare tool annotations in FastMCP registration: add readOnlyHint: true to both tool definitions via @mcp.tool(read_only=True) or equivalent fastmcp decorator.
• Add parameter constraints: validate symbol is 1-10 uppercase alphanumeric, reject common typos (e.g. 'APPLE' → suggest AAPL), return actionable error messages.
• Consider adding a get_stock_info tool that returns company name, sector, exchange, enables agents to verify they requested the right symbol before calling get_stock_price.

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry