jabrena/plinth · skills/121-java-object-oriented-design/SKILL.md

121-java-object-oriented-design skillA

121-java-object-oriented-design is agent-read markdown (skill) from jabrena/plinth: Use when reviewing, improving, or refactoring Java object-oriented design, including applying SOLID, DRY, or YAGNI; improving classes and interfaces; correcting encapsulation, inheritance, or polymorphism; resolving God Class, Feature Envy, or Data Clumps; and improving object creation, methods, or exception contracts. Triggers include review Java OOD, refactor Java OOD, improve Java OOD, fix OOP misuse, and identify Java code smells. Part of Plinth Toolkit.

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.

How to install

Latest version
mdr add jabrena/plinth/121-java-object-oriented-design@v0.18.0
Exact content
mdr add jabrena/plinth/121-java-object-oriented-design@sha256:dc727522f1cbe380

Pin 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_uuthjeoc2vfu7ic2.svg)](https://markdownregistry.com/a/art_uuthjeoc2vfu7ic2)

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Versions

versioncommittedcommitsizeaudit
v0.18.0 latest2026-08-01 26b0e71 8,358 BA view · diff
v0.17.02026-07-10 aaee915 8,358 BA view · diff
v0.16.02026-06-15 b73c9d3 8,369 BA view · diff
v0.15.02026-05-29 a800339 3,773 BA view · diff
v0.15.0-SNAPSHOT2026-04-26 819f349 3,782 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (8358 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

jabrena/plinth · 440 stars · license Apache-2.0 · pushed 2026-09-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_uuthjeoc2vfu7ic2
GET https://markdownregistry.com/api/v1/resolve?ref=jabrena/plinth/121-java-object-oriented-design
GET https://markdownregistry.com/api/v1/blob/dc727522f1cbe38081b5af92b69c93e675f335f898caf9b5a8df91a96d86dbe7

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.