A validate command was proposed and added to kubb-cli (as of version 3.14.0) to allow users to directly validate OpenAPI/Swagger specification files from the CLI. This command checks for syntax and structural errors in the API specs, provides clear feedback (errors and warnings), and supports all input formats accepted by other kubb-cli commands. The feature is intended to improve early validation in development workflows, such as CI pipelines and pre-commit hooks. Example usage: kubb validate --input ./openapi.yaml.