What is developer-kit-java?

A Java development toolkit covering Spring Boot, automated testing, LangChain4j for connecting Java applications to language models, and Amazon Web Services integration.

Use it for Spring Boot backend work, code reviews, unit tests, class refactoring, security checks, software architecture reviews, documentation, tutorials, and LangChain4j applications.

It groups specialized guidance for common Java development tasks, so an agent can follow focused instructions for building, reviewing, testing, refactoring, securing, and documenting code.

developer-kit-java — Plugin for Claude Code by giuseppe-trisciuoglio

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/giuseppe-trisciuoglio/developer-kit

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/giuseppe-trisciuoglio/developer-kit/developer-kit-java/github.svg)](https://agentmods.dev/plugins/giuseppe-trisciuoglio/developer-kit/developer-kit-java)

Your own site

<a href="https://agentmods.dev/plugins/giuseppe-trisciuoglio/developer-kit/developer-kit-java"><img src="https://agentmods.dev/badge/plugins/giuseppe-trisciuoglio/developer-kit/developer-kit-java/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/giuseppe-trisciuoglio/developer-kit/developer-kit-java"><img src="https://agentmods.dev/badge/plugins/giuseppe-trisciuoglio/developer-kit/developer-kit-java.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 52 skills, 11 commands, 9 agents cost 4,655 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

developer-kit-java scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/developer-kit-java/.claude-plugin/plugin.json · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "name": "developer-kit-java",
  "version": "4.0.1",
  "description": "Comprehensive Java development toolkit with Spring Boot, testing, LangChain4J, and AWS integration",
  "author": {
    "name": "Giuseppe Trisciuoglio",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/giuseppe-trisciuoglio/developer-kit",
  "repository": "https://github.com/giuseppe-trisciuoglio/developer-kit.git",
  "license": "MIT",
  "keywords": [
    "java",
    "spring-boot",
    "junit",
    "langchain4j",
    "aws-sdk",
    "testing"
  ],
  "agents": [
    "./agents/spring-boot-backend-development-expert.md",
    "./agents/spring-boot-code-review-expert.md",
    "./agents/spring-boot-unit-testing-expert.md",
    "./agents/java-refactor-expert.md",
    "./agents/java-security-expert.md",
    "./agents/java-software-architect-review.md",
    "./agents/java-documentation-specialist.md",
    "./agents/java-tutorial-engineer.md",
    "./agents/langchain4j-ai-development-expert.md"
  ],
  "commands": [
    "./commands/devkit.java.code-review.md",
    "./commands/devkit.java.generate-crud.md",
    "./commands/devkit.java.refactor-class.md",
    "./commands/devkit.java.architect-review.md",
    "./commands/devkit.java.dependency-audit.md",
    "./commands/devkit.java.generate-docs.md",
    "./commands/devkit.java.security-review.md",
    "./commands/devkit.java.upgrade-dependencies.md",
    "./commands/devkit.java.write-unit-tests.md",
    "./commands/devkit.java.write-integration-tests.md",
    "./commands/devkit.java.generate-refactoring-tasks.md"
  ],
  "skills": [
    "./skills/spring-boot-actuator",
    "./skills/spring-boot-cache",
    "./skills/spring-boot-crud-patterns",
    "./skills/spring-boot-dependency-injection",
    "./skills/spring-boot-event-driven-patterns",
    "./skills/spring-boot-openapi-documentation",
    "./skills/spring-boot-rest-api-standards",
    "./skills/spring-boot-saga-pattern",
    "./skills/spring-boot-security-jwt",
    ".

Read the full file on GitHub · 100 lines

Contents

What it installs

The manifest is a name and a version. 52 skills, 11 commands, 9 agents travel with it, and installing the plugin installs all of them — 4,655 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago Changed 6cefab6e5fef
1mo ago First seen · 100 lines scan A d366f8232f5e

Subscribe to this mod's changes

developer-kit-java is a plugin published in the GitHub repository giuseppe-trisciuoglio/developer-kit (360 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Backend and APIs Claude Code Java Languages agents langchain4j skills spring-boot

developer-kit-java

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

How it starts

What it installs

What this file has done since we first saw it

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