Java Architect
Guides building, configuring, and debugging Spring Boot 3.x enterprise Java apps, including WebFlux, JPA, and Spring Security.
- Repository
- Jeffallan/claude-skills
- Stars
- 12,176
- Licence
- MIT
- Files
- 6 files
What it does
When installed, this skill tells an AI coding agent to act like a senior Java architect for Spring Boot 3.x projects on Java 21. It shapes the agent's work toward reactive WebFlux endpoints, tuned JPA queries (for example avoiding N+1 fetches), Spring Security with OAuth2/JWT, and tests with JUnit 5 and Testcontainers, aiming for 85%+ coverage. It also includes reference notes the agent loads on demand for setup, reactive code, data access, security, and testing.
Great for
- Java developers building or maintaining Spring Boot 3.x microservices
- Teams adding OAuth2/JWT security or reactive WebFlux endpoints to an existing Spring app
- Developers debugging slow JPA queries or failing Spring Security filter chains
Skip it if
- Non-Java projects, since the guidance is specific to Spring and the JVM
- Production security decisions made without review: generated security configuration (CSRF disabled, stateless JWT) must be checked by a qualified engineer
- Projects that cannot run Maven or Gradle builds, since the workflow depends on running ./mvnw verify or ./gradlew check
Try asking
- “Add a reactive WebFlux endpoint for creating and fetching orders with validation”
- “Find and fix N+1 query problems in my Spring Data JPA repositories”
- “Configure Spring Security as an OAuth2 resource server with JWT for my microservice”
- “Set up JUnit 5 and Testcontainers tests for my service layer and check JaCoCo coverage”
Install in 3 steps
- 1
Download the skill
The ZIP contains the 6 original files, the MIT licence and an attribution note.
java-architect.zip - 2
Add it to your agent
Claude Code (all projects)
mkdir -p ~/.claude/skills && unzip java-architect.zip -d ~/.claude/skills/Claude Code / Agent SDK (this project only)
mkdir -p .claude/skills && unzip java-architect.zip -d .claude/skills/Claude apps (web/desktop): Settings → Capabilities → Skills → Upload skill, and choose the ZIP.
- 3
Ask for the task
No special command needed — the agent reads the skill's description and loads it when your request matches. Try one of the prompts above.
Get better results
- Point the agent at a specific module (for example ./mvnw verify -pl <module>) so builds and tests stay fast and focused.
- Review generated SecurityFilterChain and JWT configuration yourself before deploying, since the example disables CSRF and uses stateless sessions.
- Ask for the specific reference topic you need (JPA tuning, WebFlux, security) so the agent loads the matching detailed guidance.
What's inside
- references/jpa-optimization.md
- references/reactive-webflux.md
- references/spring-boot-setup.md
- references/spring-security.md
- references/testing-patterns.md
- SKILL.md
Redistributed unmodified from Jeffallan/claude-skills under the MIT licence. The assessment was drafted with AI from the skill's files on 2026-10-29. Skills can instruct your agent to run code — read SKILL.md and any scripts before installing.