java-development SKILL.md skillA
java-development from zander-zyx/java-development-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add zander-zyx/java-development-skill/java-development@git:20261030.e92e567Pins git:20261030.e92e567 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- zander-zyx/java-development-skill
- Path
SKILL.md- Versions recorded
- 6
- Latest version
- git:20261030.e92e567, committed Oct 30, 2026
- First version recorded
- Jul 11, 2026
- Size
- 10,122 bytes
- Repository stars
- 9
- License
- MIT
Use when writing, refactoring, or reviewing any Java or JVM code: plain Java, libraries, CLI tools, Android Java, Maven/Gradle dependency and build governance (pom.xml, BOMs, version catalogs, toolchains), Spring Boot development and version migration (2.x to 3.x, 3.x to 4.x, javax to jakarta), MyBatis/MyBatis-Plus or JPA/Hibernate persistence, writing tests with JUnit 5, Mockito, AssertJ, and Testcontainers, API design, exception handling, security review, Java upgrades, and JVM…
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
# Java Development Agent Router skill for general Java/JVM work. Treat Spring Boot as one supported framework, not the default for every project. Load only the matching rule files below. ## Routing Protocol Run these three steps in order before generating or modifying code. ### Step 1 — Stack Detection Inspect the project's build descriptor(s) first and record what they prove: - `pom.xml` vs `build.gradle(.kts)` → Maven or Gradle; preserve whichever exists. - Java version → `maven.compiler.release` / `<java.version>` / Gradle toolchain or `sourceCompatibility`. - Spring Boot line → parent or BOM version: 2.x, 3.x, or 4.x (drives jakarta namespace, security DSL, Actuator/Micrometer config). - Persistence → JPA/Hibernate vs MyBatis/MyBatis-Plus vs JDBC/jOOQ (dependencies plus repository/mapper layout). - Lombok → present and annotation processing configured, or absent. - Logging facade → SLF4J, Log4j2, or JUL in actual use. - Test stack → JUnit 4 vs 5, Mockito, Testcontainers, Spring Boot test slices. Existing evidence beats this skill's defaults. If a descriptor answers a question, do not assume otherwise. ### Step 2 — Lazy Routing (Progressive Disclosure) …
Read the whole file at its exact version.
How to install
mdr add zander-zyx/java-development-skill/java-development@sha256:003b62cae9fb6d32The line at the top of this page pins the label git:20261030.e92e567, 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_am62ayq7ig2aesk7)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jul 11, 2026 and Oct 30, 2026, about one every 22 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261030.e92e567 latest | 2026-10-30 | e92e567 | 10,122 B | A | view · diff |
| git:20261028.0c70c24 | 2026-10-28 | 0c70c24 | 8,647 B | A | view · diff |
| git:20260711.d3bb866 | 2026-07-11 | d3bb866 | 8,661 B | A | view · diff |
| git:20260711.66e9a49 | 2026-07-11 | 66e9a49 | 8,658 B | A | view · diff |
| git:20260711.6976878 | 2026-07-11 | 6976878 | 8,424 B | A | view · diff |
| git:20260711.8253f6d | 2026-07-11 | 8253f6d | 7,625 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 (10122 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
zander-zyx/java-development-skill · 9 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_am62ayq7ig2aesk7 GET https://markdownregistry.com/api/v1/resolve?ref=zander-zyx/java-development-skill/java-development GET https://markdownregistry.com/api/v1/blob/003b62cae9fb6d32b8fde15081e3bb5e8ccb09b1dc376daeb725e3096bbf7765
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.