Three tools with basic schemas and descriptions, but significant gaps in parameter documentation and output schema clarity. Tool names follow verb_noun convention (portfolio_get_holdings, portfolio_add_position, portfolio_close_all). Descriptions exist but are brief (18-60 chars, below the 50-200 char baseline for LLM optimization). Input schemas present with types for all parameters, but parameter descriptions are minimal. No documented output schemas. Error handling exists at the server level but tools lack recovery guidance. Risk annotations (READ_ONLY, WRITE, DESTRUCTIVE) are present but not formalized in the schema.

• Expand tool descriptions to 100-150 chars. Example: 'portfolio_get_holdings: Retrieve all current stock positions in the portfolio, including symbol, shares, and average cost. Use this to review holdings before making trades or to verify position updates.'
• Document output schemas explicitly. Define that all tools return {content: [{type: 'text', text: string}]} and specify what text content each tool produces (e.g., portfolio_get_holdings returns a formatted table of holdings).
• Add toolAnnotations to the tool definitions: readOnlyHint=true for portfolio_get_holdings, destructiveHint=true for portfolio_close_all. This enables MCP clients to enforce safety policies.
• Add numeric constraints to portfolio_add_position parameters: shares (min: 0.01, description: 'Number of shares (positive decimal)'), avg_cost (min: 0, description: 'Average cost per share in USD (non-negative decimal)').
• Enhance error messages for portfolio_close_all: if confirm is not true, return 'Confirmation required. Set confirm=true to close all positions. This action is irreversible.'

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

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