Three tools with basic definitions but significant quality gaps. All tools have descriptions (10-90 chars, below the 194-char baseline), but lack depth on WHEN to use them and what they return. HelloWorldTool and ReverseMessageTool have no input schemas visible in the code (only inferred from ToolDefinitions constants). MultiplyNumbersTool has a partial schema with type info but no output schema documented. No error handling guidance, no parameter constraints (enums, ranges), and descriptions are generic. Tool names lack action verbs (HelloWorldTool, ReverseMessageTool are noun-heavy). No tool composition or chaining support evident.

• Rename tools with action verbs: 'echo_message' instead of 'ReverseMessageTool', 'multiply_numbers' instead of 'MultiplyNumbersTool'. HelloWorldTool should be 'greet_user' or removed if it is only a demo.
• Expand descriptions to 150-250 characters. Include: what the tool does, when to use it (vs. similar tools), what it returns, and any prerequisites. Example: 'Reverses a text string character-by-character. Use this to transform user input for display or validation. Returns the reversed string. Accepts any UTF-8 text.'
• Document output schemas explicitly. Define the structure of each tool's response (e.g., { result: string, length: number }). Include this in the tool metadata or in a separate schema registry.
• Add parameter constraints. For MultiplyNumbersTool, specify min/max for FirstNumber and SecondNumber (e.g., 'integer, range -1000000 to 1000000'). Use enums for constrained choices.
• Implement error handling with recovery guidance. Return structured errors: { error: string, code: string, retryable: boolean, suggestion: string }. Example: 'Invalid input: FirstNumber must be a number. Received: "abc". Retry with a valid integer.'

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

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