Java Backend Skills

Community

Independent skills for idiomatic Java and Spring backend development.

Plugin · by dankosik · runs in Claude Code, Cowork, claude.ai · 15 skills · listed 2026-10-05

Claude Code

claude plugin install java-backend-skills

A community plugin: Anthropic has not reviewed it. Read the source before you install it.

Source

Skills (15)

Skill java-build

Resolution. Use for Maven or Gradle build failures, toolchain changes, annotation processors, or dependency conflicts.

Any agent
```
npx skills add dankosik/java-backend-skills --skill java-build
```
Skill java-concurrency

Lifetime. Use when Java tasks, executors, virtual threads, or shared state require cancellation, capacity bounds, or concurrent correctness.

Any agent
```
npx skills add dankosik/java-backend-skills --skill java-concurrency
```
Skill java-debugging

Causality. Use for a Java or Spring failure, startup problem, hang, or flaky test whose root cause is uncertain.

Any agent
```
npx skills add dankosik/java-backend-skills --skill java-debugging
```
Skill java-design

Cohesion. Use when deciding or reviewing Java responsibilities, domain boundaries, or abstractions for a concrete change.

Any agent
```
npx skills add dankosik/java-backend-skills --skill java-design
```
Skill java-idiomatic

Contracts. Use for Java representation and transformation choices where caller-visible semantics or readability need attention.

Any agent
```
npx skills add dankosik/java-backend-skills --skill java-idiomatic
```
Skill java-implement

Execution. Implement requested Java or Spring behavior within the project's existing contracts and technical choices.

Any agent
```
npx skills add dankosik/java-backend-skills --skill java-implement
```
Skill java-performance

Evidence. Use to assess or improve Java latency, throughput, CPU, memory, or startup behavior, or to benchmark a specific claim.

Any agent
```
npx skills add dankosik/java-backend-skills --skill java-performance
```
Skill java-unit-testing

Behavior. Use when writing or improving JUnit Jupiter tests, Mockito interactions, assertions, or deterministic fixtures for ordinary Java components.

Any agent
```
npx skills add dankosik/java-backend-skills --skill java-unit-testing
```
Skill spring-boot

Composition. Use when Spring Boot bean wiring, configuration, auto-configuration, or startup behavior needs implementation or diagnosis.

Any agent
```
npx skills add dankosik/java-backend-skills --skill spring-boot
```
Skill spring-data

Atomicity. Use when changing or reviewing a Spring query, persistence mapping, transaction boundary, concurrency control, or schema migration.

Any agent
```
npx skills add dankosik/java-backend-skills --skill spring-data
```
Skill spring-integrations

Delivery semantics. Use when Spring outbound calls, retries, messages, scheduled work, or caches must remain correct across delay, duplication, failure, or restart.

Any agent
```
npx skills add dankosik/java-backend-skills --skill spring-integrations
```
Skill spring-observability

Operability. Use when Spring metrics, traces, logs, health probes, or shutdown behavior must explain and support a backend operation.

Any agent
```
npx skills add dankosik/java-backend-skills --skill spring-observability
```
Skill spring-security

Authorization. Use when Spring identity, filter chains, resource permissions, tenancy, or browser credentials cross a trust boundary.

Any agent
```
npx skills add dankosik/java-backend-skills --skill spring-security
```
Skill spring-testing

Mechanism. Use when a Spring test must establish HTTP handling, configuration, security, persistence, or infrastructure behavior, including Testcontainers integration.

Any agent
```
npx skills add dankosik/java-backend-skills --skill spring-testing
```
Skill spring-web

Translation. Use when Spring MVC or WebFlux endpoints, validation, serialization, pagination, or errors affect the HTTP contract.

Any agent
```
npx skills add dankosik/java-backend-skills --skill spring-web
```

From Anthropic's public plugin directory, read on 2026-10-15. Find a skill by task.