The MCP server has only 1 tool (echo) with a minimal, generic description. The tool has proper name and basic schema, but the description is extremely terse (15 chars) and lacks context for LLM selection. No error handling guidance, no output schema documentation, and no parameter validation hints. The tool is trivial (READ_ONLY echo) but even simple tools need clear, actionable descriptions. This is below the community median (~50) due to underdeveloped definitions and lack of production patterns.

• Expand tool description to 50-200 characters. Example: 'Echo back a message to the user. Useful for testing the MCP server connection and verifying message delivery. Returns the input message prefixed with "Echo: ".'
• Document the output schema explicitly. Add to description: 'Returns a text response in the format: {type: "text", text: "Echo: <message>"}'. This helps LLMs understand what to expect.
• Add length and format constraints to the message parameter. Example description: 'The message to echo (max 1000 characters). Supports plain text and basic markdown.'
• Add error handling guidance. Document: 'If message is empty or exceeds max length, the tool will return an error with the constraint violated. Retry with a valid message.'
• Add readOnlyHint annotation to the tool definition: @app.tool(name='echo', description='...', hints=['readOnlyHint']) to signal this is a safe, non-state-mutating operation.