layered-architecture SKILL.md skillA
layered-architecture from rrezartprebreza/spring-boot-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add rrezartprebreza/spring-boot-skills/layered-architecture@git:20261017.a317397Pins git:20261017.a317397 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- rrezartprebreza/spring-boot-skills
- Path
skills/spring-boot-3/layered-architecture/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261017.a317397, committed Oct 17, 2026
- First version recorded
- Jul 4, 2026
- Size
- 6,364 bytes
- Repository stars
- 338
- License
- MIT
Use when generating or modifying any Spring Boot class — controllers, services, repositories, DTOs, mappers, or configuration. Enforces strict layer separation and prevents business logic from leaking across boundaries.
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
# Layered Architecture
## Layer Rules
```
@RestController ← HTTP only. No business logic. No JPA entities in responses.
↓ DTOs
@Service ← All business logic lives here. Orchestrates repositories.
↓ Domain objects / Entities
@Repository ← Data access only. No business logic. Returns entities or projections.
↓ JPA / JDBC
Database
```
## Controller Layer
- Handles HTTP: parsing requests, validating input (`@Valid`), returning responses
- Calls ONE service method per endpoint — no orchestration in controllers
- Never returns `@Entity` classes directly — always map to response DTOs
- Never injects `@Repository` — always goes through a `@Service`
- Exception handling via `@ControllerAdvice`, never try/catch in controllers
```java
// ✅ GOOD
@PostMapping("/orders")
public ResponseEntity<OrderResponse> createOrder(@Valid @RequestBody CreateOrderRequest request) {
Order order = orderService.createOrder(request);
return ResponseEntity.status(HttpStatus.CREATED).body(OrderResponse.from(order));
}
// ❌ BAD — business logic in controller
@PostMapping("/orders")
…Read the whole file at its exact version.
How to install
mdr add rrezartprebreza/spring-boot-skills/layered-architecture@sha256:6c39a7ed14dbd436The line at the top of this page pins the label git:20261017.a317397, 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.
[](https://markdownregistry.com/a/art_bduu4aofqf6pg36v)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 4, 2026 and Oct 17, 2026, about one every 105 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261017.a317397 latest | 2026-10-17 | a317397 | 6,364 B | A | view · diff |
| git:20260704.22f1701 | 2026-07-04 | 22f1701 | 6,272 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6364 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
rrezartprebreza/spring-boot-skills · 338 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_bduu4aofqf6pg36v GET https://markdownregistry.com/api/v1/resolve?ref=rrezartprebreza/spring-boot-skills/layered-architecture GET https://markdownregistry.com/api/v1/blob/6c39a7ed14dbd4368a1e157c4d07c550e7fdb5fe192a0ac8b840b91bd85e4620
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
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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