Document ddd

Update or create DDD documentation based on the current state of the codebase. Generates a single DOMAIN.md with context map, glossary, and aggregate documentation.From its SKILL.md

Install

npx -y skills add kt3k/skills --skill document-ddd

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

2 things to look at

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SKILL.md

2.0 KB, 397 tokens by cl100k_base, as published. Nobody here has run it

Document DDD Skill

Generate or update Domain-Driven Design documentation to keep it in sync with the current codebase. All documentation is maintained in a single DOMAIN.md file at the project root.

Execution Flow

Assess current state: Check if DOMAIN.md already exists. Read the codebase to understand the current domain model.
Generate/update DOMAIN.md with the following sections:
- Context Map:
  - List all bounded contexts discovered in the codebase
  - Document relationships between contexts (upstream/downstream, shared kernel, anti-corruption layer, etc.)
  - Note integration patterns used
- Glossary:
  - Canonical list of ubiquitous language terms with definitions
  - Update from current code — add new terms, remove obsolete ones, fix inconsistencies
- Aggregates:
  - One section per aggregate root
  - Document: purpose, invariants, entities contained, value objects, domain events emitted
  - Include key code references
Diff and confirm: Before writing, show the user what will be created or changed. Apply changes only after approval.

Output Format

A single file DOMAIN.md at the project root with the following structure:

# Domain Model

## Context Map

...

## Glossary

| Term | Definition | Code Location |
|------|------------|---------------|
| ...  | ...        | ...           |

## Aggregates

### <Aggregate Name>

- **Purpose**: ...
- **Invariants**: ...
- **Entities**: ...
- **Value Objects**: ...
- **Domain Events**: ...

...

Guidelines

Keep documentation concise and developer-focused — not academic.
Reference actual code paths so docs stay grounded.
If DOMAIN.md already exists, update it incrementally rather than replacing wholesale.
Always ask for user confirmation before writing files.

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.