Commands, Agents & Skills for Java

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Goal

An opinionated AI-native workflow for evolving modern Java Enterprise SDLC practices through reusable Skills, Agents, Commands & MCP servers.

Latest Updates

Explore the latest published content on the project website and follow its evolution through new skills, improvements, and fixes in the CHANGELOG.

Start in 60 seconds

Install every skill for your preferred agent:

# Cursor
npx skills add jabrena/cursor-rules-java --skill '*' --agent cursor -y

# Claude Code
npx skills add jabrena/cursor-rules-java --skill '*' --agent claude-code -y

# Codex
npx skills add jabrena/cursor-rules-java --skill '*' --agent codex -y

# GitHub Copilot
npx skills add jabrena/cursor-rules-java --skill '*' --agent github-copilot -y

See it in action

Ask your agent:

Use @110-java-maven-best-practices to review this Maven project.
Explain the findings, apply the approved improvements, and validate the build.

The skill guides the agent through a structured Maven review while keeping you in control of proposed changes.

5-Minute Onboarding

Learn to use this project following the quick guide Getting Started in 5 minutes.

Migrating from legacy rules

Current System prompts/rules are deprecated and will be removed in v0.16.0. If you still use them, review the release 0.14.0 article.

Choose your path

Plan

Turn an idea into an actionable change with user stories, GitHub Issues or Jira, ADRs, diagrams, AI plan mode, and OpenSpec.

Build

Implement and improve Java applications with Maven, design, coding, testing, security, documentation, Spring Boot, Quarkus, Micronaut, OpenAPI, and WireMock guidance.

Compliance (Alpha)

Review Java systems, AI models, and how GenAI tools are used across applications and delivery pipelines for regulation-aware engineering controls, evidence, and qualified owner handoffs spanning AI, data, security, product, platform, market, and governance. These skills support engineering awareness and do not provide legal advice.

Note: This set of skills could be a good complement for the future OWASP EU Compliance MCP.

Operate

Measure and improve production behavior through observability, profiling, benchmarking, and performance testing.

Explore the complete Commands, Agents, Skills, and MCP Servers inventories.

Deliverables

The project generates a set of deliverables at the end of any iteration.

Compatibility

This project is compatible with any tool that supports Commands, Agents, Skills, MCP Servers and AGENTS.md.

Skill Validations

Every push runs the following validation checks in CI Builds to keep documentation and generated skills correct, consistent, and secure:

Limitations

Lack of determinism

From the outset, be aware that results from interactions with these Skills and agents are not deterministic because of how the models behave, but you can mitigate that with clear goals and validation checkpoints.

Not all models behave in the same way

Some interactive skills require Premium models for interactive use; otherwise they follow a fixed sequence of steps.

Limits of interactions with models

Models can generate code, but they cannot execute it against your local data. To bridge that gap, some Skills include scripts you run locally.

Software engineers must remain in the loop

This project supports software engineering work; it does not replace engineering judgment. A software engineer must review, guide, and validate AI-generated decisions, code, and outcomes before they are used.

Access to corporate data

Use caution when a problem involves corporate databases or other sensitive organizational data. Before granting an AI-assisted workflow access, assess authorization, privacy, data leakage, retention, and unintended modification risks. Apply least-privilege access, human review, validation, and monitoring. See OWASP GenAI Data Security Risks & Mitigations 2026, and the new set of skills about EU regulation.

Contribute

• Follow the 5-minute guide and tell us where the experience can improve.
• Browse the skill inventory and propose a missing Java workflow.
• Open an issue to report a problem or suggest an enhancement.
• Read CONTRIBUTING.md to improve a skill, agent, command, or project guide.
• Star the repository if these workflows help your Java projects.

Architecture Decision Records (ADR)

• Review the ADR index for the complete list.

Java JEPs from Java 8 onward

Java uses JEPs (JDK Enhancement Proposals) to describe new language and platform features. This repository tracks which JEPs could improve the Skills and guidance here.

• JEPs list

Further resources

Talks, articles, reference links, skill portals, and related projects live in Project references.

Developed by humans with support from Cursor and Codex, with ❤️ from Madrid