Hmm, I don't know enough to give you a confident answer yet. The provided extracts do not contain specific information on how to use Ory Keto with .NET 7 minimal API. However, Ory Keto provides a REST API and a gRPC API, which can be used with any programming language that supports these protocols, including .NET. You can find more information about Ory Keto's REST API [here](
https://www.ory.sh/docs/keto/reference/rest-api) and about the gRPC API [here](
https://www.ory.sh/docs/keto/reference/proto-api). For more specific guidance on using Ory Keto with .NET, you may want to consult the Ory community or the Ory Keto SDK documentation [here](
https://www.ory.sh/docs/keto/sdk/overview).