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clean-architecture SKILL.md skillA

clean-architecture from giuseppe-trisciuoglio/developer-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add giuseppe-trisciuoglio/developer-kit/clean-architecture@git:20260324.a02e282

Pins git:20260324.a02e282 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: giuseppe-trisciuoglio/developer-kit
Path: plugins/developer-kit-java/skills/clean-architecture/SKILL.md
Versions recorded: 4
Latest version: git:20260324.a02e282, committed Mar 24, 2026
First version recorded: Feb 12, 2026
Size: 16,262 bytes
Repository stars: 366
License: MIT

Provides implementation patterns for Clean Architecture, Hexagonal Architecture (Ports & Adapters), and Domain-Driven Design in Java 21+ Spring Boot 3.5+ applications. Use when structuring layered architectures, separating domain logic from frameworks, implementing ports and adapters, creating entities/value objects/aggregates, or refactoring monolithic codebases for testability and maintainability.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Clean Architecture, Hexagonal Architecture & DDD for Spring Boot

## Overview

This skill provides comprehensive guidance for implementing Clean Architecture, Hexagonal Architecture (Ports & Adapters), and Domain-Driven Design tactical patterns in Java 21+ Spring Boot 3.5+ applications. It ensures clear separation of concerns, framework-independent domain logic, and highly testable codebases through proper layering and dependency management.

## When to Use

- Architecting new Spring Boot applications with clear separation of concerns
- Refactoring tightly coupled code into testable, layered architectures
- Implementing domain logic independent of frameworks and infrastructure
- Designing ports and adapters for swappable implementations
- Applying Domain-Driven Design tactical patterns (entities, value objects, aggregates)
- Creating testable business logic without Spring context dependencies

## Instructions

### 1. Understand the Core Concepts

#### Clean Architecture Layers (Dependency Rule)

Dependencies flow inward. Inner layers know nothing about outer layers.

| Layer | Responsibility | Spring Boot Equivalent |
|-------|---------------|----------------------|
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add giuseppe-trisciuoglio/developer-kit/clean-architecture@sha256:aaeee65762015d7e

The line at the top of this page pins the label git:20260324.a02e282, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_wyxbba54wxd74bxk.svg)](https://markdownregistry.com/a/art_wyxbba54wxd74bxk)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Feb 12, 2026 and Mar 24, 2026, about one every 13 days.

version	committed	commit	size	audit
git:20260324.a02e282 latest	2026-03-24	a02e282	16,262 B	A	view · diff
git:20260316.91dc3c4	2026-03-16	91dc3c4	15,320 B	A	view · diff
git:20260223.c6d4db1	2026-02-23	c6d4db1	15,300 B	A	view · diff
v1.0.0	2026-02-12	4106116	15,468 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (16262 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

giuseppe-trisciuoglio/developer-kit · 366 stars · license MIT · pushed 2026-09-10 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_wyxbba54wxd74bxk
GET https://markdownregistry.com/api/v1/resolve?ref=giuseppe-trisciuoglio/developer-kit/clean-architecture
GET https://markdownregistry.com/api/v1/blob/aaeee65762015d7ed2e1012eb81e2f4d46116257831bedcd6f9cbc9075e54df1

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Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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