functorium-develop

functorium-develop is a Claude Code plugin that guides the 7-step development workflow for DDD projects based on the Functorium framework.

Installation

# Load standalone
claude --plugin-dir ./.claude/plugins/functorium-develop

# Load simultaneously with the release-note plugin
claude --plugin-dir ./.claude/plugins/functorium-develop --plugin-dir ./.claude/plugins/release-note

--plugin-dir loads plugins on a per-session basis. They appear in /skills in the format functorium-develop:{skill-name}.

7-Step Workflow

project-spec → architecture-design → domain-develop → application-develop → adapter-develop → observability-develop → test-develop

Step	Skill	Role	Key Deliverables
1	project-spec	Requirements specification (PRD)	`00-project-spec.md`
2	architecture-design	Project structure and infrastructure design	`01-architecture-design.md`
3	domain-develop	Domain model design and implementation	`domain/00~03` + source code
4	application-develop	CQRS use case implementation	`application/00~03` + source code
5	adapter-develop	Repository, Endpoint, DI implementation	`adapter/00~03` + source code
6	observability-develop	Observability strategy (KPI mapping, dashboard, alerts)	Observability strategy document
7	test-develop	Unit/integration/architecture tests	Test code

Separately, the domain-review skill reviews existing code from a DDD perspective at any point.

Detailed flows for each step and inter-step connections are covered on the Workflow page.

8 Skills

Skill	Layer	Trigger Examples
project-spec	Planning	”Write the PRD”, “Define the requirements”
architecture-design	Design	”Design the architecture”, “Set up the project structure”
domain-develop	Domain	”Implement the domain”, “Create the Aggregate”
application-develop	Application	”Implement the use case”, “Create a Command”
adapter-develop	Adapter	”Implement the Repository”, “Create an endpoint”
observability-develop	Observability	”Design observability”, “Design the dashboard”
test-develop	Testing	”Write tests”, “Add integration tests”
domain-review	Review	”Do a DDD review”, “Review the architecture”

6 Expert Agents

Agents are specialists in specific layers, used when in-depth discussion about design decisions is needed. If skills are “automated workflows,” agents are “expert consultations.”

Agent	Area of Expertise
product-analyst	PRD writing, requirements analysis, user stories, Aggregate boundary identification
domain-architect	Ubiquitous language, Aggregate boundaries, type strategy
application-architect	CQRS design, port identification, FinT composition, CtxEnricher 3-Pillar design
adapter-engineer	Repository, Endpoint, DI registration, CtxEnricherPipeline integration
observability-engineer	KPI-to-metric mapping, dashboard, alerts, ctx.* propagation, distributed tracing
test-engineer	Unit/integration/architecture tests, ctx 3-Pillar snapshot tests

Detailed roles and usage examples for agents are covered on the Expert Agents page.

Plugin Structure

.claude/plugins/functorium-develop/
├── .claude-plugin/plugin.json      # Manifest (v0.4.0)
├── skills/                         # 8 skills
│   ├── project-spec/
│   ├── architecture-design/
│   ├── domain-develop/
│   ├── application-develop/
│   ├── adapter-develop/
│   ├── observability-develop/
│   ├── test-develop/
│   └── domain-review/
└── agents/                         # 6 expert agents
    ├── product-analyst.md
    ├── domain-architect.md
    ├── application-architect.md
    ├── adapter-engineer.md
    ├── observability-engineer.md
    └── test-engineer.md

Getting Started

If starting a new project, begin with the PRD:

Write the PRD. I want to build an AI model governance platform.

If you already have requirements, start with domain development:

Implement the domain. I want to design the Product Aggregate.

If you have existing code, start with a review:

Review the current domain code from a DDD perspective.