ddd-tactical-patterns
Apply DDD tactical patterns in code using entities, value objects, aggregates, repositories, and domain events with explicit invariants.
Best use case
ddd-tactical-patterns is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Apply DDD tactical patterns in code using entities, value objects, aggregates, repositories, and domain events with explicit invariants.
Teams using ddd-tactical-patterns should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/ddd-tactical-patterns/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How ddd-tactical-patterns Compares
| Feature / Agent | ddd-tactical-patterns | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Apply DDD tactical patterns in code using entities, value objects, aggregates, repositories, and domain events with explicit invariants.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# DDD Tactical Patterns
## Use this skill when
- Translating domain rules into code structures.
- Designing aggregate boundaries and invariants.
- Refactoring an anemic model into behavior-rich domain objects.
- Defining repository contracts and domain event boundaries.
## Do not use this skill when
- You are still defining strategic boundaries.
- The task is only API documentation or UI layout.
- Full DDD complexity is not justified.
## Instructions
1. Identify invariants first and design aggregates around them.
2. Model immutable value objects for validated concepts.
3. Keep domain behavior in domain objects, not controllers.
4. Emit domain events for meaningful state transitions.
5. Keep repositories at aggregate root boundaries.
If detailed checklists are needed, open `references/tactical-checklist.md`.
## Example
```typescript
class Order {
private status: "draft" | "submitted" = "draft";
submit(itemsCount: number): void {
if (itemsCount === 0) throw new Error("Order cannot be submitted empty");
if (this.status !== "draft") throw new Error("Order already submitted");
this.status = "submitted";
}
}
```
## Limitations
- This skill does not define deployment architecture.
- It does not choose databases or transport protocols.
- It should be paired with testing patterns for invariant coverage.Related Skills
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