Four tools with basic schemas and descriptions, but significant gaps in parameter documentation and output schema clarity. All tools are READ_ONLY, which is good for safety, but descriptions lack actionable context for LLM selection. Parameter descriptions are minimal (e.g., 'Database name (optional, uses default if not specified)' is generic). No output schemas documented. Error handling and recovery guidance absent. Naming is clear and verb-based (list_, describe_, execute_), following conventions. However, the server lacks the depth expected of production tools.

• Document output schemas for all four tools. E.g., list_databases returns {databases: [{name: string, tables_count: number}]}. This enables LLMs to chain tools and extract IDs.
• Add explicit constraints to parameter descriptions: 'database: string, 1-64 alphanumeric chars, defaults to MYSQL_DATABASE env var if omitted' instead of generic '(optional, uses default if not specified)'.
• Add error recovery guidance to execute_query: 'If query fails with "syntax error", verify it contains only SELECT, SHOW, DESCRIBE, or EXPLAIN. Write queries are rejected. Try a simpler SELECT first.'
• Implement pagination for list_databases and list_tables: add optional limit (1-100, default 20) and offset parameters. Return total_count so LLMs know if more results exist.
• Clarify tool selection in descriptions: 'Use describe_table to inspect column names and types. Use execute_query to fetch actual data or run complex SELECT statements with WHERE/JOIN/GROUP BY.'

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

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