14 tools with basic schemas and descriptions, but significant gaps in parameter documentation, output schema clarity, and error handling guidance. Most tools lack descriptions for parameters (e.g., DiscoverData's searchPattern, searchType lack detail on valid values). No enum constraints visible for constrained inputs (searchType should be enum: 'table'|'column'|'both'). Output schemas are not documented, LLMs cannot predict response structure. Error handling is minimal (generic try-catch returning JSON errors). Destructive tools (DeleteRecords, InsertRecords) lack confirmation/dry-run patterns. Tool names are clear (verb_noun style), but parameter naming inconsistencies exist (tableNames vs tableName). No evidence of pagination support despite tools returning potentially large result sets.

• Document output schemas for all tools. For DiscoverData, explicitly define: { success: boolean, discovery: { Tables: [{TableName, RowCount, ...}], Columns: [...], Relationships: [...], DataProfiles: [...] }, summary: string }. LLMs need this to plan downstream calls.
• Convert constrained parameters to enums. Change searchType from string to enum ['table', 'column', 'both']. Change queryType in BuildQuery to enum ['SELECT', 'INSERT', 'UPDATE', 'DELETE']. Add format constraints to descriptions: 'sampleSize: integer, 1 - 10000 (default 1000)'.
• Add pagination support to tools returning lists. ExecuteQuery, DiscoverData, GetDatabasePerformanceStats should accept limit and offset/cursor parameters. Return total_count and next_cursor in responses. Cap default results at 50 items.
• Implement confirmation pattern for destructive operations. DeleteRecords and InsertRecords should support a dry_run boolean parameter. When true, return 'Would delete X rows' or 'Would insert Y rows' without executing. Require explicit dry_run=false to commit.
• Enhance error messages with recovery guidance. Instead of 'No configuration loaded', return 'No configuration loaded. Call ListConfigurations() to see available configs, then SwitchConfiguration(configName) to activate one.' Validate WHERE clauses in DeleteRecords and reject obviously dangerous patterns (e.g., empty WHERE).