Single tool 'add' has critical definition gaps. Tool name lacks action verb (should be 'add_numbers' or similar for clarity). Description is minimal (12 chars, below 20-char threshold). Input parameters 'a' and 'b' have null descriptions, violating the requirement that every parameter must have a non-empty description. No output schema documented. Tool is mathematically trivial and does not reflect real-world MCP use (no API integration, no error handling, no resource management). This appears to be a template/example server, not production-grade.

• Rename tool from 'add' to 'add_numbers' to follow verb_noun convention and improve LLM discoverability.
• Expand tool description to 50-150 characters explaining what it does, when to use it, and what it returns. Example: 'Add two integers and return their sum. Use this for arithmetic calculations. Returns an integer result.'
• Add descriptions to both parameters: a='The first integer to add' and b='The second integer to add'.
• Document the output schema in tool metadata: return type is integer, no error cases documented.
• Add input validation and error handling: check for integer overflow, return actionable error messages if inputs are invalid.