This is a quality-gate testing tool, not a production MCP server. The two fixture tools (echo, add) are minimal test stubs with basic schemas but lack depth. Echo has a trivial description (11 chars); add's description is adequate (56 chars). Both have proper input schemas with typed parameters and descriptions. However, the tools are not designed for real agent use, they exist only to validate the testing framework itself. No error handling guidance, no output schema documentation, no composition patterns. The server is a meta-tool for evaluating OTHER servers, not a domain-specific agent tool.

• Expand echo description to 50 - 100 chars: 'Echoes back the input message unchanged. Use to test message round-trip and verify server connectivity.'
• Document output schemas in tool descriptions or via a separate schema field. E.g., 'Returns {message: string, timestamp: ISO8601}' for echo.
• Add error handling guidance: 'If message is empty, returns error: message_required. If message exceeds 10KB, returns error: message_too_large.'
• Rename tools to verb_noun form: 'echo_message' and 'add_numbers' for clarity and LLM parsing.
• If these are intentionally minimal fixtures, document that in the server description and note that the quality-gate tool itself is not meant to be a production agent tool.