# Spring Boot Engineer

Generates Spring Boot 3.x configurations, creates REST controllers, implements Spring...

- Repository: https://github.com/Jeffallan/claude-skills (12164 stars)
- Category: Design
- License: MIT
- Last updated: 2026-10-30
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add Jeffallan/claude-skills --skill spring-boot-engineer -g -a claude-code -y`
Codex: `npx skills add Jeffallan/claude-skills --skill spring-boot-engineer -g -a codex -y`
Cursor: `npx skills add Jeffallan/claude-skills --skill spring-boot-engineer -g -a cursor -y`
Gemini CLI: `npx skills add Jeffallan/claude-skills --skill spring-boot-engineer -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add Jeffallan/claude-skills`

## Description

Generates Spring Boot 3.x configurations, creates REST controllers, implements Spring Security 6 authentication flows, sets up Spring Data JPA repositories, and configures reactive WebFlux endpoints. Use when building Spring Boot 3.x applications, microservices, or reactive Java applications; invoke for Spring Data JPA, Spring Security 6, WebFlux, Spring Cloud integration, Java REST API design, or Microservices Java architecture.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Spring Boot Engineer

## Core Workflow

1. **Analyze requirements**, Identify service boundaries, APIs, data models, security needs
2. **Design architecture**, Plan microservices, data access, cloud integration, security; confirm design before coding
3. **Implement**, Create services with constructor injection and layered architecture (see Quick Start below)
4. **Secure**, Add Spring Security, OAuth2, method security, CORS configuration; verify security rules compile and pass tests. If compilation or tests fail: review error output, fix the failing rule or configuration, and re-run before proceeding
5. **Test**, Write unit, integration, and slice tests; run `./mvnw test` (or `./gradlew test`) and confirm all pass before proceeding. If tests fail: review the stack trace, isolate the failing assertion or component, fix the issue, and re-run the full suite
6. **Deploy**, Configure health checks and observability via Actuator; validate `/actuator/health` returns `UP`. If health is `DOWN`: check the `components` detail in the response, resolve the failing component (e.g., datasource, broker), and re-validate

## Reference Guide

Load detailed guidance based on context:

| Topic | Reference | Load When |
|-------|-----------|-----------|
| Web Layer | `references/web.md` | Controllers, REST APIs, validation, exception handling |
| Data Access | `references/data.md` | Spring Data JPA, repositories, transactions, projections |
| Security | `references/security.md` | Spring Security 6, OAuth2, JWT, method security |
| Cloud Native | `references/cloud.md` | Spring Cloud, Config, Discovery, Gateway, resilience |
| Testing | `references/testing.md` | @SpringBootTest, MockMvc, Testcontainers, test slices |

## Quick Start, Minimal Working Structure

A standard Spring Boot feature consists of these layers. Use these as copy-paste starting points.

### Entity

The rest: https://github.com/Jeffallan/claude-skills/blob/HEAD/skills/spring-boot-engineer/SKILL.md