OpenApiGenerator.AspNet package

It is planned that it will add /nuget/v3/index.json and other endpoints to allow the server to serve a ready-made OpenAPI Rest client packaged in NuGet

builder.Services.AddRestClientNuGet();
app.MapRestClientNuGet();

And using this client would look something like this:
nuget.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <clear />
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
    <add key="rest-client" value="https://your-server.com/nuget/v3/index.json" protocolVersion="3" />
  </packageSources>
</configuration>

References:

• https://learn.microsoft.com/en-us/nuget/api/overview

Need to think about versioning of this NuGet

Start with the linked NuGet API overview and inspect the repository's ASP.NET integration entry points. Define the required /nuget/v3/index.json and related endpoints, then resolve the package versioning approach before implementation; the issue names no files or tests to use for verification.