Single tool 'echo_text' has a complete input schema with proper type and required field, and a basic description. However, the description is only 57 characters, below the 194-char baseline for production tools. Output schema is defined in code but not exposed to LLMs via tool metadata. Tool is read-only and idempotent, correctly annotated, but lacks context on when/why to use it. This is a minimal fixture server, not a production tool suite.

• Add a description to the 'text' parameter: 'The text string to echo back. Used for integration testing and protocol validation. Any UTF-8 string is accepted.'
• Expand tool description to ~150 - 200 chars: 'Echo the provided text for integration testing. Returns the input text unchanged in a structured response. Use this to verify tool invocation, parameter passing, and response parsing in MCP client implementations.'
• Expose outputSchema in the tool definition returned by tools/list so clients can validate responses: {"type": "object", "properties": {"text": {"type": "string"}}, "required": ["text"]}
• Consider renaming to 'test_echo_text' or 'validate_text_passthrough' to clarify this is a testing/validation tool, not a general-purpose echo utility.
• Add an example in the tool description (not parameter description) showing expected input/output: 'Example: input {"text": "hello"} → output {"text": "hello"}'

Inferred effective spec: 2025-06-18+.

• Relies on Stateful initialize / Mcp-Session-Id (removed; protocol is stateless) - make each request self-contained