Each microservice owns entities such as an insurance policy, cargo or fruit. They are exposed through synchronous interfaces such as REST APIs and asynchronous interfaces such as messages in service buses and events in event brokers. When describing these interfaces using OpenAPI and AsyncAPI, you find yourself repeating one thing: the schema of entities owned by the microservice. This talk shows how HDI Global SE uses xRegistry as an unopinionated schema registry to store these entity schemas in a central place. Decoupled from the integration product and the interface descriptions these schemas can be referenced by OpenAPI and AsyncAPI documents and have developer portals with catalogues built around them.