backend-code SKILL.md skillA
backend-code from nerds-odd-e/doughnut is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nerds-odd-e/doughnut/backend-code@git:20260928.32163aePins git:20260928.32163ae in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nerds-odd-e/doughnut
- Path
.agents/skills/backend-code/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260928.32163ae, committed Sep 28, 2026
- First version recorded
- Sep 16, 2026
- Size
- 2,388 bytes
- Repository stars
- 50
- License
- MIT
Backend Java production code, Spring Boot controllers/services/repositories, controller return values, imports, schema ERD pointer. Use when editing backend production Java.
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
# Backend Code Rules Migrations: `db-migration` skill. ## Commands Run backend verification from the repo root: ```bash CURSOR_DEV=true nix develop -c pnpm backend:verify ``` When no database migration is involved, this is faster: ```bash CURSOR_DEV=true nix develop -c pnpm backend:test_only ``` ## Relational Schema The `docs/database-erd.md` Mermaid diagram documents tables, foreign keys, and key columns. After Flyway migrations change the schema, regenerate it with the `database-erd` skill: ```bash CURSOR_DEV=true nix develop -c pnpm export:database-erd ``` ## HTTP Sessions - HTTP sessions are stored in MySQL (Spring Session JDBC) and must stay serializable: they hold only the signed-in security context (and, in production, the OAuth2 authorization request). Do not add `@SessionScope` beans or session attributes; controllers are singletons, and per-request state uses `@RequestScope`. - Non-prod Basic sign-in keeps its user in the session, like production's GitHub login; there is no remember-me cookie. ## Controller Return Values - Prefer returning entities, or other types already used as API bodies, from controllers when the JSON shape fits. …
Read the whole file at its exact version.
How to install
mdr add nerds-odd-e/doughnut/backend-code@sha256:73521e36adf6dd55The line at the top of this page pins the label git:20260928.32163ae, 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_a4hikg4ukrhxnq5t)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Sep 16, 2026 and Sep 28, 2026, about one every 12 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260928.32163ae latest | 2026-09-28 | 32163ae | 2,388 B | A | view · diff |
| git:20260916.b334104 | 2026-09-16 | b334104 | 1,933 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 (2388 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
nerds-odd-e/doughnut · 50 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_a4hikg4ukrhxnq5t GET https://markdownregistry.com/api/v1/resolve?ref=nerds-odd-e/doughnut/backend-code GET https://markdownregistry.com/api/v1/blob/73521e36adf6dd55c9b15154d496f88de12089eff1111ddd6075727a9e8bd1d7
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.