This server has a single tool with a minimalist definition that lacks rigor across multiple dimensions. The tool name is appropriately verb-prefixed ('get_'), but the description is generic and under-detailed. Most critically, the input schema is completely empty ({}), which is a hard FAIL per the rubric. There is no documented output schema, no parameter descriptions (none exist), no error handling guidance, and no input validation. The tool reads a hardcoded file path ('sales_data.csv'), returning a string representation of a CSV, appropriate for a demo, but the lack of structured output, pagination, and error recovery patterns makes this unsuitable for production use.

• Expand tool description to 100-200 characters. Include: what data the CSV contains, example columns, when to call this tool vs. other analysis tools, and any prerequisites (file must exist and be readable).
• Add a 'file_path' parameter (required, string, with description: 'Path to the CSV file to read, relative to server directory'). This allows agents to read different files.
• Define and document the output schema: return a JSON object with 'columns' (array of column names), 'data_types' (map of column to type), 'row_count' (integer), 'rows' (array of objects, max 50), and 'has_more' (boolean). This supports structured reasoning.
• Implement structured error responses: on FileNotFoundError, return {"error": "file_not_found", "message": "File does not exist: sales_data.csv", "guidance": "Check that the file exists in the server directory."}
• Add pagination: accept 'limit' (default 20, min 1, max 100) and 'offset' (default 0) parameters. Return total row count so agents can paginate through large datasets.
• Validate inputs early: check file_path is not empty, does not contain path traversal sequences (..), and exists before attempting to read.
• Return CSV data as structured objects (array of dicts) rather than string representation. This is 10x more useful for agent reasoning.
• Add a tool annotation (readOnlyHint: true) to indicate this tool does not modify state.