 OpenScience Scholarly Communication Works are available on repositories and aggregators. To make them accessible by all, content providers select OpenAir services. For such content to be registered on OpenAir, it must follow the OpenAir Interoperability Guidelines. OpenAir Metadata Validator is a service of OpenAir where content providers validate their metadata compliance with OpenAir guidelines. It is accessed via an online user-friendly web interface within the OpenAir Provide service. How can a Repository Manager achieve that by running the Metadata Validator service within Provide? Metadata Validator is a service for content providers. The service allows content to be accessed globally via the OpenAir Graph Metadata collection. It's verbose results of the validation and points to invalid records. Functioning is a feedback mechanism for content providers. Increases interoperability and enables the adoption of common standards, performs checks of big metadata, and spots any errors quickly. The Metadata Validator service is configurable via a web tool that allows users to customize the validation rules to be applied, makes it easier to adapt the service when the OpenAir guidelines are updated, shows the status of analysis, shows a validation score, concludes with actions, validates your metadata, register, and gain broader visibility. Validate Now