Claude Code Template for Spring Boot (v1.0)
A production-ready template of Claude Code skills and agents for building Spring Boot 4.x / Java 21+ applications. Clone this repo and start generating your app with Claude Code — the skills and agents guide Claude to follow best practices for REST APIs, JPA, security, testing, cloud-native deployment, and Kubernetes.
What's Included
Agents (.claude/agents/)
Specialized agents that Claude Code can invoke for specific tasks:
| Agent | Purpose |
|---|---|
spring-boot-engineer |
Build Spring Boot 4.x apps with layered architecture |
code-reviewer |
Review code for correctness, security, Spring Boot conventions |
kubernetes-specialist |
K8s deployments, probes, ConfigMap/Secret, Prometheus, Skaffold |
devops-engineer |
CI/CD pipelines (CircleCI), Paketo Buildpacks, Skaffold |
docker-expert |
Multi-stage Dockerfiles, Paketo Buildpacks, image optimization |
security-engineer |
Spring Security, OWASP, input validation, SSL Bundles |
Skills (.claude/skills/)
Reusable knowledge that Claude loads contextually:
| Skill | What it teaches |
|---|---|
spring-boot |
Core Spring Boot development with 5 reference guides (web, data, security, cloud, testing) |
code-quality |
Clean code principles, API contracts, null safety, exception handling |
design-patterns |
Classic patterns (Factory, Builder, Strategy) + enterprise (Saga, Outbox, CQRS) |
testing-patterns |
JUnit 5, Mockito, MockMvc, RestTestClient, Testcontainers with @ServiceConnection |
java-modern |
Java 21+ features: records, sealed classes, pattern matching, virtual threads |
jpa-patterns |
JPA/Hibernate pitfalls (N+1, lazy loading), Hibernate 6/7, optimistic locking |
logging-patterns |
Structured JSON logging, SLF4J, MDC, AI-friendly formats |
Key Conventions
The template enforces these rules via CLAUDE.md:
- No Lombok — explicit constructors, getters/setters,
LoggerFactory.getLogger() - Constructor injection — no
@Autowiredon fields - RestClient over RestTemplate/WebClient for blocking HTTP calls
- RestTestClient with
@AutoConfigureRestTestClientfor integration tests - Testcontainers with
@ServiceConnection(not@DynamicPropertySource) - Jakarta Persistence (not
javax.persistence) - Maven with
pl.piomin.servicesgroup ID - CircleCI for CI/CD, Docker Compose for local dependencies
Cloud-Native Coverage
The cloud.md reference covers:
- Spring Cloud (Config Server, Eureka, Gateway, Resilience4j, LoadBalancer)
- Distributed tracing with OpenTelemetry (OTLP) and Micrometer Observation API
- Virtual Threads, HTTP Interface Clients (
@HttpExchange), GraalVM Native Image - Kubernetes: ConfigMap/Secret with
envFrom, Prometheus annotations, startup/liveness/readiness probes,preStophook, graceful shutdown - TLS: cert-manager (Ingress TLS + pod-level mTLS), SSL Bundles with hot reload
- Config Tree for reading mounted secrets from files
- Paketo Buildpacks via
spring-boot:build-image - Skaffold for local K8s development loop
Usage
- Clone this repository
- Start Claude Code in the project directory
- Describe what you want to build — Claude will use the skills and agents automatically
git clone https://github.com/piomin/claude-ai-spring-boot.git my-app
cd my-app
claudeDirectory Structure
.
├── .claude
│ ├── agents
│ │ ├── code-reviewer.md
│ │ ├── devops-engineer.md
│ │ ├── docker-expert.md
│ │ ├── kubernetes-specialist.md
│ │ ├── security-engineer.md
│ │ └── spring-boot-engineer.md
│ └── skills
│ ├── README.md
│ ├── code-quality/SKILL.md
│ ├── design-patterns/SKILL.md
│ ├── java-modern/SKILL.md
│ ├── jpa-patterns/SKILL.md
│ ├── logging-patterns/SKILL.md
│ ├── spring-boot
│ │ ├── SKILL.md
│ │ └── references
│ │ ├── cloud.md
│ │ ├── data.md
│ │ ├── security.md
│ │ ├── testing.md
│ │ └── web.md
│ └── testing-patterns/SKILL.md
├── CLAUDE.md
├── README.md
└── pom.xml
Blog Post
You can find a detailed explanation of this template in the post: Claude Code Template for Spring Boot.