Three tools with minimal descriptions (10-60 chars, well below 194-char baseline) and no parameter descriptions. Schemas present but lack detail. Tool names are simple verbs (echo, add, slow_echo) but lack context. No error handling guidance, no output schema documentation, no composition hints. This is a demo/example server, not production-grade.

• Expand tool descriptions to 100-200 chars. Example: 'echo: Returns the input text unchanged. Use to test connectivity or echo user messages back. Returns a plain string.'
• Add parameter descriptions in docstrings. Example: 'delay_ms (int, default 500): Milliseconds to sleep before echoing. Must be >= 0. Use to simulate latency or test timeout handling.'
• Document output schemas explicitly. Example: 'Returns: str, the echoed text, or error message if input validation fails.'
• Add input validation with actionable errors. Example: 'delay_ms must be >= 0; got {value}. Negative delays are not supported.'
• Include composition hints. Example: 'echo: Use after add to verify results, or chain with other tools to test multi-step workflows.'