Creating Spring Boot Projects

Purpose

Use this skill to create new Spring Boot 4 projects or define their structure before implementation. The skill adds value when the user needs an architecture decision, Spring Boot 4 feature selection, or the bundled templates in assets/.

Critical rules

• Never jump straight to implementation before assessing project complexity.
• Default to the simplest architecture that fits the domain.
• Treat Spring Boot 4 as the target. Default new projects to Java 25 (current LTS). Boot 4's official baseline is Java 17 — accept Java 21 (previous LTS) or Java 17 when the user asks for them. Java 26 is the newest feature release (GA 2026-03-17) but is non-LTS; only pick it if the project tracks non-LTS Java.
• Read the reference files before choosing a higher-complexity architecture or optional framework feature.
• Reuse the templates in assets/ instead of rewriting the same scaffolding from scratch.

Workflow

Step 1: Assess project shape

Collect the project constraints first: