The server defines 1 tool (add_integers) with adequate but basic quality. The tool has a clear verb-noun name, a proper description (71 chars, within baseline), and a complete input schema with typed parameters and descriptions. However, there are gaps in composition completeness, output documentation is minimal, and error handling is absent. The tool is read-only and simple, which limits scope for complex quality issues, but the server lacks demonstration of patterns like pagination, structured output guidance, error recovery, or composition chains. Prompts and resources are implemented but tool definitions are the focus here.

• Document the return type and structure explicitly: 'Returns: int, the sum of a and b. Example: add_integers(2, 3) returns 5.'
• Add input validation and error handling: 'Parameters must be valid integers. If non-integer input is provided, returns an error message: "Invalid input: expected integer, got {type}".'
• Consider adding optional constraints in parameter descriptions, e.g., 'a: The first integer to add (range: -2147483648 to 2147483647).' This helps LLMs understand bounds.
• If this server grows, implement pagination and structured output patterns for any tools returning collections (currently N/A, but relevant for scalability).