domain-model

name	domain_model
description	Create a comprehensive domain model based on feature specifications and the technical constitution.

Domain Model Skill

Design the system's core capabilities and boundaries.

When to Activate

This skill is relevant when:

• Creating domain models from specifications
• Defining system boundaries and entities
• Establishing data structures and relationships
• Synthesizing requirements into unified model

Core Principles

Bounded Contexts

• Identify clear logical boundaries
• Define specific responsibilities
• Avoid context overlap
• Maintain separation of concerns

Ubiquitous Language

• Terminology matches business domain
• Consistent naming across specs
• Use domain expert vocabulary
• Align with product requirements

Invariants Definition

• Define rules that must always be true
• Document core business constraints
• Establish data integrity requirements
• Define aggregate boundaries

Constitution Compliance

• Strict adherence to technical constitution
• Follow established tech stack
• Respect architecture patterns
• Maintain security requirements

Quick Checks

When creating domain models, verify:

• Technical constitution reviewed and followed
• Product requirements (PRD) understood
• All feature specifications analyzed
• Executive summary provided
• Bounded contexts identified and listed
• Core aggregates and entities defined
• Entity fields include: name, type, description
• Storage references defined for all root entities
• Invariants documented for key aggregates
• Value objects defined for reusable structures
• Domain services specified for complex operations
• Event flows documented with diagrams
• Tenant/user isolation strategy explicit
• Audit logging strategy defined
• Type definitions provided in project language
• All entities traceable to requirements
• Relationship to specifications mapped
• Open design decisions clearly flagged
• Resolved decisions include rationale