Claude Code MCP - Agent Orchestration Platform

# Types Module ## Purpose Comprehensive type system foundation for the Agent Orchestration Platform with branded types, immutable state management, security-focused validation, and comprehensive domain modeling. ## Key Components - **ids.py**: Branded identifier types with cryptographic security and validation - **agent.py**: Agent lifecycle state management with immutable dataclasses - **session.py**: Session management with security boundaries and resource tracking - **security.py**: Cryptographic types with permission-based access control - **communication.py**: MCP tool results and message types with comprehensive validation - **iterm.py**: iTerm2 integration types with async protocols and event handling - **validation.py**: Comprehensive type validation with security enforcement ## Architecture & Dependencies **External**: contracts (Design by Contract), datetime, pathlib, enum, typing, cryptography **Internal**: No internal dependencies (foundation module) **Patterns**: - Branded Types (NewType) for compile-time safety and prevention of ID confusion - Immutable Dataclasses (frozen=True) for thread safety and state consistency - Design by Contract for comprehensive precondition/postcondition validation - Protocol Interfaces for async operations and dependency injection ## Critical Considerations - **Security**: All types implement comprehensive validation with security-first design - Branded types prevent ID confusion and type mixing attacks - Input validation prevents injection and malformed data attacks - Resource limits prevent exhaustion attacks - Cryptographic types ensure proper key/data separation - **Performance**: O(1) validation with compiled regex patterns and efficient lookups - Type operations are constant time for scalability - Immutable design enables safe concurrent access - Validation functions are pure and side-effect free - **Integration**: Foundation types used throughout entire system - Clear separation between public and internal APIs - Comprehensive error handling with security-focused messages - Property-based testing support for all type operations ## Related Documentation - [CONTRACTS.md](../../development/CONTRACTS.md) - Contract specifications - [TYPES.md](../../development/TYPES.md) - Type system documentation - [ARCHITECTURE.md](../../ARCHITECTURE.md) - System architecture overview