Install and wire the @camcima/nestjs-rfc9457 library into a NestJS application so every HTTP error becomes an RFC 9457 / RFC 7807 Problem Details (application/problem+json) response. Use this skill whenever the user asks to standardize NestJS error responses, adopt Problem Details, return application/problem+json, integrate @camcima/nestjs-rfc9457, configure Rfc9457Module, set up structured validation errors with class-validator, document error responses in Swagger/OpenAPI, or normalize 4xx/5xx payloads in a Nest app — even if they only describe the symptom (inconsistent error shapes, "make my errors look the same", RFC 7807, problem+json) without naming the package.
2026-04-28