backend-core skillA
backend-core is agent-read markdown (skill) from bekaku/java-spring-boot-starter: Use first for every backend implementation task in this Spring Boot repo (Java 25, Spring Boot 4.1, JPA/MyBatis, JWT). Gives the start-to-finish workflow, where each kind of code goes, layering and transaction rules, and which domain skill to load next..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Backend Core — Playbook
> **Role:** HOW to run any backend task. Binding facts + evidence: `skills/backend/CORE.md` (read it after this file).
> **Global rules:** `AGENTS.md`. **Skill index:** `SKILLS.md`.
## 1. Before you edit
1. If a task file exists in `docs/tasks/`, read it and set Resume State to `IN_PROGRESS` before touching code (`AGENTS.md §7`).
2. Pick the domain skills from the table in §4. Load only those.
3. Find the closest existing feature and trace it end to end:
```text
controller/api/{Model}Controller → service/{Model}Service → serviceImpl/{Model}ServiceImpl
→ repository/{Model}Repository (JPA) and/or mybatis/{Model}Mybatis + resources/mybatis/{Model}Mybatis.xml
+ model/{Model} dto/{Model}Dto mapper/{Model}Mapper validator/{Model}Validator
```
Good references: `AppRole*` (standard CRUD), `AiChat*` (owner-scoped rows), `FileManager*` (MyBatis paging + files).
4. Write down, before coding: the HTTP contract, who owns each write, the transaction boundary, and any non-DB side effect (file, vector, email, queue, remote call).
## 2. While you implement
…Read the whole file at its exact version.
How to install
mdr add bekaku/java-spring-boot-starter/backend-core@git:20260924.15dc64amdr add bekaku/java-spring-boot-starter/backend-core@sha256:3bf6010fd1193e68Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_5wdonpfp6xtos32g)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260924.15dc64a latest | 2026-09-24 | 15dc64a | 4,022 B | A | view · diff |
| git:20260923.b5acb6d | 2026-09-23 | b5acb6d | 3,020 B | A | view · diff |
| git:20260921.de5eb9f | 2026-09-21 | de5eb9f | 2,065 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 (4022 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
bekaku/java-spring-boot-starter · 31 stars · license none · pushed 2026-09-24 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_5wdonpfp6xtos32g GET https://markdownregistry.com/api/v1/resolve?ref=bekaku/java-spring-boot-starter/backend-core GET https://markdownregistry.com/api/v1/blob/3bf6010fd1193e68582c80f2e6a6fcae99106208e85aca67cc1b12646f05715d
Your agent 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.