This server has significant definition quality gaps. Tool descriptions are present but minimal (10-50 chars, well below the 194-char baseline). Parameter descriptions exist but lack detail on constraints, formats, and valid ranges. No input schemas are visible in the provided code, only FastAPI route signatures with basic type hints. Output schemas are completely undocumented. Error handling is absent; no recovery guidance or categorization. The 8 tools lack composition clarity: get_stock_data, get_alpha_vantage_data, and search_financial_data overlap in purpose without clear differentiation. No tool annotations (readOnlyHint, destructiveHint, idempotentHint) are present. The server is HTTP-based (good for transport), but definition quality is well below production baseline.

• Create explicit JSON Schema definitions for all 8 tools with full type constraints, enums for 'period' (1y|6mo|3mo|1mo|1d), and validation rules. Document in a schema registry or OpenAPI spec.
• Expand parameter descriptions to 50-100 chars each. Example: 'period: Time period for historical data (1d=1 day, 1mo=1 month, 3mo=3 months, 6mo=6 months, 1y=1 year, 5y=5 years, max=all available data).'
• Document output schemas for each tool. Example for get_stock_data: '{current_price: float, price_change_percent: float, average_volume: int, historical_data: [{date: ISO8601, open: float, high: float, low: float, close: float, volume: int}]}'.
• Add tool annotations: mark all 8 tools with readOnlyHint=true (they are all read-only). This enables agents to reason about side effects.
• Consolidate overlapping data retrieval tools. Merge get_stock_data and get_alpha_vantage_data into a single get_stock_data tool with a 'source' parameter (yfinance|alpha_vantage), or clearly document when each is preferred.

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

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