Pontifex IA exhibits severe definition quality gaps across all six tools. Tool descriptions are minimal (10-50 chars, well below the 194-char baseline for A+ tools). Input schemas are present but lack parameter descriptions entirely, critical for LLM tool selection. The 'initialize' and 'tools/list' tools appear to be meta-operations rather than domain tools, inflating the tool count. Demo tools (echo, weather, calculate) are toy implementations with trivial schemas. No output schemas are documented. Error handling is absent from descriptions. The tools/call tool accepts arbitrary 'arguments' as an untyped object, violating the constrained-input pattern. No tool declares permissions, audit trails, or idempotency guarantees.

• Add 50-200 character descriptions to every tool explaining WHAT it does, WHEN to use it, and WHAT it returns. Current descriptions (10-50 chars) are too terse for LLM selection.
• Document output schemas for all tools. Specify field names, types, and whether results are paginated. Include example responses.
• Add descriptions to every input parameter. For 'city' in weather tool, specify format (e.g., 'City name, e.g. New York, London'). For 'expression' in calculate, specify allowed operators and format.
• Replace untyped 'arguments' object in tools/call with a discriminated union or explicit parameter schema. Define which tools accept which argument keys.
• Add error handling guidance to tool descriptions. E.g., 'Returns 404 if city not found. Try a different city name or use a major city.' Categorize errors as retryable vs. fatal.