Imported from jabrena/plinth (skills/304-frameworks-spring-boot-security/SKILL.md). Install upstream with npx skills add jabrena/plinth --skill 304-frameworks-spring-boot-security. Copyright stays with the author (Apache-2.0).

Spring Boot Security Guidelines

Name: 304-frameworks-spring-boot-security
Author: jabrena

Apply Spring Boot security best practices with secure-by-default API boundaries.

What is covered in this Skill?

Spring Security configuration and SecurityFilterChain setup
Authentication and authorization policies for endpoints
Method-level security (@PreAuthorize / @Secured)
Principle of least privilege for roles and scopes
Secure error handling and denial responses
Sensitive data handling in logs and responses

Scope: Apply recommendations based on the reference rules and good/bad examples.

Constraints

Before applying security changes, ensure the project compiles. After improvements, run full verification.

MANDATORY: Run ./mvnw compile or mvn compile before applying any change
SAFETY: If compilation fails, stop immediately
VERIFY: Run ./mvnw clean verify or mvn clean verify after applying improvements
BEFORE APPLYING: Read the reference for detailed rules and examples

When to use this skill

Add Spring Boot security support
Review Spring Boot security configuration
Improve API authorization in Spring Boot
Add JWT resource server security in Spring Boot
Harden Spring Boot security headers and CSRF settings
Implement method security with @PreAuthorize in Spring Boot

Workflow

Read reference and assess project context

Read references/304-frameworks-spring-boot-security.md and inspect the current project setup before proposing changes.

Gather scope and decide target improvements

Identify requested outcomes, constraints, and the minimum safe set of changes to apply.

Apply framework-aligned changes

Implement or refactor security-related configuration/code following the reference patterns and project conventions.

Run verification and report results

Execute appropriate build/tests and summarize what changed, what was verified, and any follow-up actions.

Reference

For detailed guidance, examples, and constraints, see references/304-frameworks-spring-boot-security.md.

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304-frameworks-spring-boot-security

About

Spring Boot Security Guidelines

Constraints

When to use this skill

Workflow

Reference

Use it

Manifest

Reviews