Server has 9 tools with basic schemas and descriptions, but significant gaps limit production readiness. All tools have descriptions (10-80 chars, mostly adequate) and input schemas with types. However, descriptions lack depth on WHEN to use each tool and dependencies between them. No output schemas documented. Parameters lack constraints (enums, ranges). Error handling is absent, no guidance on retryability, user-fixable errors, or recovery paths. No tool annotations (readOnlyHint, etc.). Tools are well-named with action verbs (get_*, exec_*) but lack composition guidance. Security: credentials appear to be injected server-side (good), but no audit logging visible in code.

• Document output schemas for all 9 tools. Specify field names, types, and whether results are paginated. E.g., get_table_schema returns [{column_name: string, data_type: string, is_nullable: boolean}].
• Add error handling with actionable recovery messages. E.g., 'Database not found. Available databases: [list]. Try again with a valid database name.' Categorize errors as retryable (connection timeout) vs user-fixable (invalid db name).
• Enhance parameter descriptions with constraints. E.g., 'db: Database name (alphanumeric, 1-128 chars, case-insensitive)' and 'db_schema: Schema name (default: dbo, valid values: dbo, staging, archive)'.
• Add tool annotations via fastmcp. Mark all tools with readOnlyHint=true since they only query data. This enables clients to cache results and optimize retry logic.
• Clarify tool composition and dependencies in descriptions. E.g., 'Call get_table_names first to discover available tables, then call get_table_schema to inspect structure. Use get_missing_indexes to identify optimization opportunities after analyzing get_index_usage_stats.'