mcp-audit is a conformance test kit, not a production MCP server. Its 8 tools are deliberately buggy fixtures designed to validate auditing logic, not to provide real functionality. Tool descriptions are adequate for test purposes but lack LLM-optimization. Schemas are present and mostly complete, but parameter descriptions are minimal or absent. The echo_server.py fixture is correct; fixture_server.py intentionally violates patterns (loose_required, hidden_beta, mojibake_read, drive_letter_create) to seed test cases. This is appropriate for a test harness but scores poorly against production tool standards.

• Add parameter descriptions to all tools. For 'path', specify: 'Filesystem path (absolute or relative; must be readable/writable depending on operation).' For 'head', specify: 'Number of bytes/characters to read; must be >= 1.'
• Document output schemas explicitly. E.g., 'Returns {"text": string, "error": boolean}' or use structured response objects instead of free-text TextContent.
• Enhance error messages with recovery guidance. Instead of 'Invalid arguments: missing required parameter text', return 'Missing required parameter: text. Provide a non-empty string to echo.'
• Add destructiveHint=true to drive_letter_create and any other write tools. Ensure all tool annotations match actual behavior.
• If this is a test kit, clearly document in README that these tools are intentionally buggy fixtures for auditing, not production-ready. Separate 'correct' fixtures (echo_server.py) from 'buggy' ones (fixture_server.py) in documentation.