Use when you need to design, review, or improve validation in Quarkus applications — including Bean Validation on JAX-RS resources, @Valid on parameters and CDI beans, constraint groups, @ConfigMapping validation, custom constraints, nested DTO validation, and ExceptionMapper-based error mapping. This should trigger for requests such as Add validation support in Quarkus; Review Quarkus validation rules; Improve request validation in Quarkus REST APIs; Add custom validation constraints in Quarku…
Use when you need to design, review, or improve validation in Quarkus applications — including Bean Validation on JAX-RS resources, @Valid on parameters and CDI beans, constraint groups, @ConfigMapping validation, custom constraints, nested DTO validation, and ExceptionMapper-based error mapping.
This should trigger for requests such as Add validation support in Quarkus; Review Quarkus validation rules; Improve request validation in Quarkus REST APIs; Add custom validation constraints in Quarkus; Validate Quarkus @ConfigMapping properties.
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Skill metadata
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Version0.18.0
LicenseApache-2.0
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author
Juan Antonio Breña Moral
version
0.18.0
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skill mdSKILL.md2,736 B
docsSUMMARY.md608 B
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SKILL.md
Quarkus Validation Guidelines
Apply Quarkus validation best practices at REST boundaries.
What is covered in this Skill?
Bean Validation annotations on DTOs and command models
@Valid and boundary validation in Jakarta REST resources
Validation groups and custom constraints
Validation error mapping for client-safe responses
Consistent handling of invalid inputs across endpoints
Scope: Apply recommendations based on the reference rules and good/bad examples.
Constraints
Before applying validation 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 validation support in Quarkus
Review Quarkus validation rules
Improve request validation in Quarkus REST APIs
Add custom validation constraints in Quarkus
Validate Quarkus @ConfigMapping properties
Improve validation error mapping with ExceptionMapper in Quarkus
Workflow
Read reference and assess project context
Read references/403-frameworks-quarkus-validation.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 validation-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/403-frameworks-quarkus-validation.md](references/403-frameworks-quarkus-validation.md).
