The aterm server defines 2 tools (add, multiply) with minimal but present schema and description information. Both tools have basic descriptions (11-15 chars), matching parameters with integer types, and clear argument documentation. However, descriptions fall below the 20-character guideline and lack context about when to use these tools. Parameter descriptions are adequate but generic. No output schema documentation. No error handling guidance. The tools are mathematically trivial test cases rather than production-grade patterns. Schemas are properly typed (integer) but bare. This is solidly in the 'fair' range for definition quality, adequate for testing but insufficient for production use.

• Expand tool descriptions to 50 - 100 characters. Example: 'Add two integers and return the sum. Use for arithmetic calculations requiring addition. Both parameters must be valid integers.'
• Document output schema in tool docstrings. Example: 'Returns: int, the sum of a and b, or an error if inputs exceed integer bounds.'
• Add parameter range constraints to descriptions. Example: 'a: first integer (range: -2^31 to 2^31-1)' for each parameter.
• Implement structured error responses. Example: if a + b overflows, return {'error': 'Integer overflow', 'suggestion': 'Use smaller values or a bignum tool', 'retryable': false}.
• Rename tools to verb_noun form for consistency: 'compute_sum' and 'compute_product' instead of 'add' and 'multiply'.