Five read-only tools with consistent naming (verb_noun pattern: search_*, list_*, get_*) and complete input schemas. Descriptions are present and adequate (100-150 chars each), explaining what each tool does. However, output schemas are not documented in the source, the rubric requires explicit documentation of return types for A+ scoring. Parameter descriptions are minimal (10-30 chars) and lack detail on constraints, formats, or dependencies. No error handling guidance visible. Tools are well-composed (each does one thing) and follow the chat data model (accepting natural queries like 'threshold' rather than opaque IDs). Missing: output schema documentation, parameter constraint details, error recovery guidance.

• Document output schemas explicitly. For each tool, add a 'Returns' section describing the structure: e.g., search_products returns [{id, title, handle, vendor, type, inventory, url}, ...]. Include field types and whether fields are always present.
• Add constraint details to parameter descriptions. Rewrite 'limit' as 'Maximum number of results to return (default 10, max 250; omit for default)' and 'threshold' as 'Inventory threshold (integer ≥ 0; variants with quantity ≤ threshold are returned)'.
• Add error handling guidance to tool descriptions. E.g., 'If product_id is invalid, returns error with available product IDs. If API rate limit is hit, retry after 60 seconds.'
• Clarify pagination behavior. State whether results are sorted, whether there is a next_cursor or offset, and whether a total count is returned. E.g., 'Returns up to 'limit' results sorted by relevance; use offset parameter for pagination.'
• Expand parameter descriptions to 50 - 100 chars. Explain not just what the parameter is, but when and why an LLM would use it. E.g., 'query: Search term (product name, SKU, vendor, or type); use this to find products before fetching details.'

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

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