Server has 7 tools with basic schemas and descriptions, but significant gaps limit production readiness. All tools have descriptions (10-200 chars, mostly adequate) and input schemas with type definitions. However, output schemas are undocumented (tools return JSON strings, not structured objects with declared fields), error handling is minimal (generic try-catch with no recovery guidance), and parameter constraints are missing (e.g., no enums for 'status' values, no format validation for dates). No tool annotations (readOnlyHint/destructiveHint). Naming is clear and verb-based. Composition is reasonable, tools are single-purpose. Critical issue: submit_attendance_record and submit_leave_request lack confirmation/dry-run patterns for irreversible operations. Average tool score: 52/100.

• Document output schemas for all tools. Define the structure of returned JSON (e.g., employee object has fields: employee_id (int), employee_number (str), employee_name (str), position (str), dept_name (str), hire_date (str), employee_status (str)). Use JSON Schema in tool metadata.
• Add enum constraints to all status/type parameters. Replace 'Filter by employee status (e.g., 'Active', 'Inactive')' with explicit enum: status in ['Active', 'Inactive']. Same for attendance_status, leave_status, leave_type.
• Implement confirmation pattern for write operations. Add optional 'dry_run' parameter to submit_attendance_record and submit_leave_request. When true, return what would be created/updated without committing. Require explicit confirmation for actual writes.
• Enhance error messages with recovery guidance. Instead of 'Error executing submit_attendance_record: employee not found', return 'Employee ID 999 not found. Call list_employees() to find valid employee IDs, or provide employee_number instead.'
• Add tool annotations via FastMCP. Mark read tools with readOnlyHint=true, write tools with destructiveHint=true, and idempotent operations with idempotentHint=true. This enables clients to reason about safety.