Developed and delivered an RPM Spec Language Server for the mason-org/mason-registry repository, enabling syntax awareness, validation, and seamless editor integration for RPM spec files. The implementation leveraged the language server protocol and package management skills, with configuration and metadata managed in YAML. The feature included a package.yaml file specifying essential metadata such as name, description, homepage, license, and supported languages, and was packaged for execution via PyPI to streamline installation and distribution. This work enhanced developer productivity, reduced packaging errors, and standardized tooling for RPM spec authoring, supporting future contributor onboarding through clear packaging and metadata strategies.