502-frameworks-micronaut-rest

name	502-frameworks-micronaut-rest
description	Use when you need to design, review, or improve REST APIs with Micronaut — including @Controller routes, HTTP status codes, DTOs, Bean Validation, exception handlers, pagination, idempotency, ETag/If-Match, caching headers, versioning, contract-first OpenAPI (OpenAPI Generator), optional runtime OpenAPI via micronaut-openapi, and security annotations. This should trigger for requests such as Review or improve Micronaut @Controller REST APIs; Add validation, error handling, or align controllers with the OpenAPI contract on Micronaut HTTP layer; Design Micronaut controllers and DTO validation; Add Micronaut exception handlers and Problem Details responses; Improve pagination filtering or OpenAPI alignment in Micronaut APIs. Part of Plinth Toolkit
license	Apache-2.0
metadata	{"author":"Juan Antonio Breña Moral","version":"0.18.0"}

Micronaut REST API Guidelines

Apply REST design principles for Micronaut HTTP applications.

What is covered in this Skill?

• Semantic HTTP with @Get/@Post/@Put/@Patch/@Delete and HttpResponse status control
• Resource-oriented paths and stable DTO contracts
• @Valid on request bodies with Bean Validation
• Centralized error mapping (ExceptionHandler / problem JSON when applicable)
• Pagination with Pageable and bounded sizes
• OpenAPI contract file (API-first) and OpenAPI Generator for server stubs
• Security annotations (@Secured) on sensitive routes
• Idempotency-Key for retried writes