MySQL server has complete input schemas for all 5 tools with proper types and descriptions. Tool names follow verb_noun convention (connect_db, list_databases, etc.). However, descriptions are minimal (10-50 chars), lacking context on WHEN to use each tool or what happens on error. Parameter descriptions are present but generic. No output schemas documented. No error handling guidance. Missing tool annotations (readOnlyHint). Composition is sound, each tool has one responsibility, but descriptions do not meet LLM-optimization baselines (target 50-200 chars).

• Expand tool descriptions to 80-150 chars. Example: 'List all accessible databases on the connected MySQL server. Call this first to discover available databases before querying tables.' This guides LLM selection and sets expectations.
• Document output schemas for all tools. E.g., list_tables returns [{table_name: string, table_type: string, engine: string}]. Include this in the tool definition or a separate schema reference.
• Add error handling guidance to execute_query: 'Only SELECT, SHOW, DESCRIBE, and EXPLAIN queries are allowed. If rejected, the query contains write operations (INSERT, UPDATE, DELETE, etc.). Rephrase as a SELECT to inspect data instead.'
• Add readOnlyHint: true to all tool definitions in the schema. This signals to clients that these tools are safe to call without side effects.
• Document the row limit and pagination strategy. Add to execute_query description: 'Results are limited to 1000 rows by default (configurable via ROW_LIMIT). For larger datasets, use LIMIT and OFFSET in your query to paginate.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry