# Task ID: 7
**Title:** Define TypeScript Types and Interfaces
**Status:** done
**Dependencies:** 2 ✓
**Priority:** medium
**Description:** Create comprehensive type definitions for Autotask entities and MCP protocol structures
**Details:**
Create types/ directory with interfaces for Company, Contact, Ticket, TimeEntry, Resource entities matching Autotask API schema. Add MCP-specific types for tools, resources, and responses. Include enhanced entity types with _enhanced field for ID-to-name mappings. Use strict typing with required/optional field annotations.
**Test Strategy:**
TypeScript compilation validates all types, test type compatibility with actual API responses
